初一上册100道数学计算题及答案。
1.25×（8+10） =1.25×8+1.25×10=10+12.5=22.59123-（123+8.8）=9123-123-8.8=9000-8.8=8991.21.24×8.3+8.3×1.76=8.3×（1.24+1.76)=8.3×3=24.99999×1001=9999×（1000+1）=9999×1000+9999×1=1000899914.8×6.3-6.3×6.5＋8.3×3.7=（14.8-6.5）×6.3＋8.3×3.7=8.3×6.3+8.3×3.78.3×（6.3＋3.7）=8.3×10=831.24+0.78+8.76=（1.24+8.76）+0.78=10+0.78=10.78933-157-43=933-（157+43）=933-200=7334821-998=4821-1000+2=3823I32×125×25=4×8×125×25=（4×25）×（8×125）=100×1000=1000009048÷268=（2600+2600+2600+1248）÷26=2600÷26+2600÷26+2600÷26+1248÷269=100+100+100+48=3482881÷ 43=（1290+1591）÷ 434=1290÷43+1591÷43=30+373.2×42.3×3.75-12.5×0.423×16=3.2×42.3×3.75-1.25×42.3×1.6=42.3×(3.2×3.75-1.25×1.6)=42.3×(4×0.8×3.75-1.25×4×0.4)=42.3×(4×0.4×2×3.75-1.25×4×0.4)=42.3×(4x0.4x7.5-1.25x4x0.4)=42.3×[4×0.4×(7.5-1.25)]=42.3×[4×0.4×6.25]=42.3×(4×2.5)=42371.8+18÷1.5-0.5×0.3=1.8+12-0.15=13.8-0.15=13.656.5×8+3.5×8-47=52+28-47=80-47(80-9.8)×5分之2-1.32=70.2X2/5-1.32=28.08-1.32=26.768×7分之4÷[1÷(3.2-2.95)]=8×4/7÷[1÷0.25]=8×4/7÷4=8/72700×（506－499）÷900=2700×7÷900=18900÷900=2133.02－（148.4－90.85）÷2.5=33.02－57.55÷2.5=33.02－23.02=10（1÷1－1）÷5.1=（1－1）÷5.1=0÷5.1=018.1＋（3－0.299÷0.23）×1=18.1＋1.7×1=18.1＋1.7=19.8[-18]+29+[-52]+60= 19[-3]+[-2]+[-1]+0+1+2= -3[-301]+125+301+[-75]= 50[-1]+[-1/2]+3/4+[-1/4]= -1[-7/2]+5/6+[-0.5]+4/5+19/6= 1.25[-26.54]+[-6.14]+18.54+6.14= -81.125+[-17/5]+[-1/8]+[-0.6]= -3[-98+76+(-87)]*23[56+(-75)-(7)]-(8+4+3)5+21*8/2-6-5968/21-8-11*8+61-2/9-7/9-564.6-(-3/4+1.6-4-3/4)1/2+3+5/6-7/12[2/3-4-1/4*(-0.4)]/1/3+222+(-4)+(-2)+4*3-2*8-8*1/2+8/1/8(2/3+1/2)/(-1/12)*(-12)(-28)/(-6+4)+(-1)2/(-2)+0/7-(-8)*(-2)(1/4-5/6+1/3+2/3)/1/218-6/(-3)*(-2)(5+3/8*8/30/(-2)-3(-84)/2*(-3)/(-6)1/2*(-4/15)/2/3-3x+2y-5x-7y1437×27＋27×563 〔75-（12+18）〕÷152160÷〔（83-79）×18〕 280＋840÷24×5325÷13×(266－250) 85×(95－1440÷24)58870÷(105＋20×2) 1437×27＋27×56381432÷(13×52＋78) [37.85-（7.85+6.4）] ×30156×[(17.7-7.2)÷3] （947－599）＋76×6436×(913－276÷23) [192－（54＋38）]×67[（7.1-5.6）×0.9-1.15]÷2.5 81432÷(13×52＋78)5.4÷[2.6×（3.7-2.9）+0.62] （947－599）＋76×64 60－(9.5＋28.9)]÷0.18 2.881÷0.43－0.24×3.5 20×[(2.44－1.8)÷0.4＋0.15] 28-(3.4 1.25×2.4) 0.8×〔15.5-(3.21 5.79)〕 （31.8 3.2×4）÷5 194－64.8÷1.8×0.9 36.72÷4.25×9.9 3.416÷（0.016×35） 0.8×[(10－6.76)÷1.2]（136+64）×（65-345÷23） (6.8-6.8×0.55)÷8.50.12× 4.8÷0.12×4.8 （58+37）÷（64-9×5）812-700÷（9+31×11） （3.2×1.5+2.5）÷1.685+14×（14+208÷26） 120-36×4÷18+35（284+16）×（512-8208÷18） 9.72×1.6-18.305÷74/7÷[1/3×（3/5-3/10）] （4/5+1/4）÷7/3+7/1012.78－0÷（ 13.4＋156.6 ） 37.812-700÷（9+31×11） （136+64）×（65-345÷23） 3.2×（1.5+2.5）÷1.685+14×（14+208÷26） （58+37）÷（64-9×5）(6.8-6.8×0.55)÷8.5 （284+16）×（512-8208÷18）0.12× 4.8÷0.12×4.8 （3.2×1.5+2.5）÷1.6120-36×4÷18+35 10.15-10.75×0.4-5.75.8×（3.87-0.13）+4.2×3.74 347+45×2-4160÷5232.52-（6+9.728÷3.2）×2.5 87（58+37）÷（64-9×5）[（7.1-5.6）×0.9-1.15] ÷2.5 （3.2×1.5+2.5）÷1.65.4÷[2.6×（3.7-2.9）+0.62] 12×6÷（12-7.2）-63.2×6+（1.5+2.5）÷1.6 （3.2×1.5+2.5）÷1.65.8×（3.87-0.13）+4.2×3.7433.02－（148.4－90.85）÷2.51)23+(-73)(2)(-84)+(-49)(3)7+(-2.04)(4)4.23+(-7.57)(5)(-7/3)+(-7/6)(6)9/4+(-3/2)(7)3.75+(2.25)+5/4(8)-3.75+(+5/4)+(-1.5)(9)(-17/4)+(-10/3)+(+13/3)+(11/3)(10)(-1.8)+(+0.2)+(-1.7)+(0.1)+(+1.8)+(+1.4)(11)(+1.3)-(+17/7)(12)(-2)-(+2/3)(13)|(-7.2)-(-6.3)+(1.1)|(14)|(-5/4)-(-3/4)|-|1-5/4-|-3/4|)(15)(-2/199)*(-7/6-3/2+8/3)(16)4a)*(-3b)*(5c)*1/61. 3/7 × 49/9 - 4/32. 8/9 × 15/36 + 1/273. 12× 5/6 – 2/9 ×34. 8× 5/4 + 1/45. 6÷ 3/8 – 3/8 ÷66. 4/7 × 5/9 + 3/7 × 5/97. 5/2 -（ 3/2 + 4/5 ）8. 7/8 + （ 1/8 + 1/9 ）9. 9 × 5/6 + 5/610. 3/4 × 8/9 - 1/30.12χ＋1.8×0.9=7.2 (9－5χ)×0.3=1.02 6.4χ-χ=28+4.411. 7 × 5/49 + 3/1412. 6 ×（ 1/2 + 2/3 ）13. 8 × 4/5 + 8 × 11/514. 31 × 5/6 – 5/615. 9/7 - （ 2/7 – 10/21 ）16. 5/9 × 18 – 14 × 2/717. 4/5 × 25/16 + 2/3 × 3/418. 14 × 8/7 – 5/6 × 12/1519. 17/32 – 3/4 × 9/2420. 3 × 2/9 + 1/321. 5/7 × 3/25 + 3/722. 3/14 ×× 2/3 + 1/623. 1/5 × 2/3 + 5/624. 9/22 + 1/11 ÷ 1/225. 5/3 × 11/5 + 4/326. 45 × 2/3 + 1/3 × 1527. 7/19 + 12/19 × 5/628. 1/4 + 3/4 ÷ 2/329. 8/7 × 21/16 + 1/230. 101 × 1/5 – 1/5 × 2131.50＋160÷40 （58+370）÷（64-45）32.120-144÷18+3533.347+45×2-4160÷5234（58+37）÷（64-9×5）35.95÷（64-45）36.178-145÷5×6+42 420+580-64×21÷2837.812-700÷（9+31×11） （136+64）×（65-345÷23）38.85+14×（14+208÷26）39.（284+16）×（512-8208÷18）40.120-36×4÷18+3541.（58+37）÷（64-9×5）42.(6.8-6.8×0.55)÷8.543.0.12× 4.8÷0.12×4.844.（3.2×1.5+2.5）÷1.6 （2）3.2×（1.5+2.5）÷1.645.6-1.6÷4= 5.38+7.85-5.37=46.7.2÷0.8-1.2×5= 6-1.19×3-0.43=47.6.5×（4.8-1.2×4）= 0.68×1.9+0.32×1.948.10.15-10.75×0.4-5.749.5.8×（3.87-0.13）+4.2×3.7450.32.52-（6+9.728÷3.2）×2.551.-5+58+13+90+78-(-56)+5052.-7*2-57/(353.(-7)*2/(1/3)+79/(3+6/4）54.123+456+789+98/(-4)55.369/33-(-54-31/15.5)56.39+{3x[42/2x(3x8)]}57.9x8x7/5x(4+6)58.11x22/(4+12/2)59.94+(-60)/101.a^3-2b^3+ab(2a-b)=a^3+2a^2b-2b^3-ab^2=a^2(a+2b)-b^2(2b+a)=(a+2b)(a^2-b^2)=(a+2b)(a+b)(a-b)2.(x^2+y^2)^2-4y(x^2+y^2)+4y^2=(x^2+y^2-2y)^23.(x^2+2x)^2+3(x^2+2x)+x^2+2x+3=(x^2+2x)^2+4(x^2+2x)+3=(x^2+2x+3)(x^2+2x+1)=(x^2+2x+3)(x+1)^24.(a+1)(a+2)+(2a+1)(a-2)-12=a^2+3a+2+2a^2-3a-2-12=3a^2-12=3(a+2)(a-2)5.x^2(y+z)^2-2xy(x-z)(y+z)+y^2(x-z)^2=[x(y+z)-y(x-z)]^2=(xz+yz)^2=z^2(x+y)^26.3(a+2)^2+28(a+2)-20=[3(a+2)-2][(a+2)+10]=(3a+4)(a+12)7.(a+b)^2-(b-c)^2+a^2-c^2=(a+b)^2-c^2+a^2-(b-c)^2=(a+b+c)(a+b-c)+(a+b-c)(a-b+c)=(a+b-c)(a+b+c+a-b+c)=2(a+b-c)(a+c)8.x(x+1)(x^2+x-1)-2=(x^2+x)(x^2+x-1)-2=(x^2+x)^2-(x^2+x)-2=(x^2+x-2)(x^2+x+1)=(x+2)(x-1)(x^2+x+1)1. 3/7 × 49/9 - 4/32. 8/9 × 15/36 + 1/273. 12× 5/6 – 2/9 ×34. 8× 5/4 + 1/45. 6÷ 3/8 – 3/8 ÷66. 4/7 × 5/9 + 3/7 × 5/97. 5/2 -（ 3/2 + 4/5 ）8. 7/8 + （ 1/8 + 1/9 ）9. 9 × 5/6 + 5/610. 3/4 × 8/9 - 1/30.12χ＋1.8×0.9=7.2 (9－5χ)×0.3=1.02 6.4χ-χ=28+4.411. 7 × 5/49 + 3/1412. 6 ×（ 1/2 + 2/3 ）13. 8 × 4/5 + 8 × 11/514. 31 × 5/6 – 5/615. 9/7 - （ 2/7 – 10/21 ）16. 5/9 × 18 – 14 × 2/717. 4/5 × 25/16 + 2/3 × 3/418. 14 × 8/7 – 5/6 × 12/1519. 17/32 – 3/4 × 9/2420. 3 × 2/9 + 1/321. 5/7 × 3/25 + 3/722. 3/14 ×× 2/3 + 1/623. 1/5 × 2/3 + 5/624. 9/22 + 1/11 ÷ 1/225. 5/3 × 11/5 + 4/326. 45 × 2/3 + 1/3 × 1527. 7/19 + 12/19 × 5/628. 1/4 + 3/4 ÷ 2/329. 8/7 × 21/16 + 1/230. 101 × 1/5 – 1/5 × 2131.50＋160÷40 （58+370）÷（64-45）32.120-144÷18+3533.347+45×2-4160÷5234（58+37）÷（64-9×5）35.95÷（64-45）36.178-145÷5×6+42 420+580-64×21÷2837.812-700÷（9+31×11） （136+64）×（65-345÷23）38.85+14×（14+208÷26）39.（284+16）×（512-8208÷18）40.120-36×4÷18+3541.（58+37）÷（64-9×5）42.(6.8-6.8×0.55)÷8.543.0.12× 4.8÷0.12×4.844.（3.2×1.5+2.5）÷1.6 （2）3.2×（1.5+2.5）÷1.645.6-1.6÷4= 5.38+7.85-5.37=46.7.2÷0.8-1.2×5= 6-1.19×3-0.43=47.6.5×（4.8-1.2×4）= 0.68×1.9+0.32×1.948.10.15-10.75×0.4-5.749.5.8×（3.87-0.13）+4.2×3.7450.32.52-（6+9.728÷3.2）×2.551.-5+58+13+90+78-(-56)+5052.-7*2-57/(353.(-7)*2/(1/3)+79/(3+6/4）54.123+456+789+98/(-4)55.369/33-(-54-31/15.5)56.39+{3x[42/2x(3x8)]}57.9x8x7/5x(4+6)58.11x22/(4+12/2)59.94+(-60)/101.a^3-2b^3+ab(2a-b)=a^3+2a^2b-2b^3-ab^2=a^2(a+2b)-b^2(2b+a)=(a+2b)(a^2-b^2)=(a+2b)(a+b)(a-b)2.(x^2+y^2)^2-4y(x^2+y^2)+4y^2=(x^2+y^2-2y)^23.(x^2+2x)^2+3(x^2+2x)+x^2+2x+3=(x^2+2x)^2+4(x^2+2x)+3=(x^2+2x+3)(x^2+2x+1)=(x^2+2x+3)(x+1)^24.(a+1)(a+2)+(2a+1)(a-2)-12=a^2+3a+2+2a^2-3a-2-12=3a^2-12=3(a+2)(a-2)5.x^2(y+z)^2-2xy(x-z)(y+z)+y^2(x-z)^2=[x(y+z)-y(x-z)]^2=(xz+yz)^2=z^2(x+y)^26.3(a+2)^2+28(a+2)-20=[3(a+2)-2][(a+2)+10]=(3a+4)(a+12)7.(a+b)^2-(b-c)^2+a^2-c^2=(a+b)^2-c^2+a^2-(b-c)^2=(a+b+c)(a+b-c)+(a+b-c)(a-b+c)=(a+b-c)(a+b+c+a-b+c)=2(a+b-c)(a+c)8.x(x+1)(x^2+x-1)-2=(x^2+x)(x^2+x-1)-2=(x^2+x)^2-(x^2+x)-2=(x^2+x-2)(x^2+x+1) =(x+2)(x-1)(x^2+x+1)
1.25×（8+10） =1.25×8+1.25×10=10+12.5=22.59123-（123+8.8）=9123-123-8.8=9000-8.8=8991.21.24×8.3+8.3×1.76=8.3×（1.24+1.76)=8.3×3=24.99999×1001=9999×（1000+1）=9999×1000+9999×1=1000899914.8×6.3-6.3×6.5＋8.3×3.7=（14.8-6.5）×6.3＋8.3×3.7=8.3×6.3+8.3×3.78.3×（6.3＋3.7）=8.3×10=831.24+0.78+8.76=（1.24+8.76）+0.78=10+0.78=10.78933-157-43=933-（157+43）=933-200=7334821-998=4821-1000+2=3823I32×125×25=4×8×125×25=（4×25）×（8×125）=100×1000=1000009048÷268=（2600+2600+2600+1248）÷26=2600÷26+2600÷26+2600÷26+1248÷269=100+100+100+48=3482881÷ 43=（1290+1591）÷ 434=1290÷43+1591÷43=30+373.2×42.3×3.75-12.5×0.423×16=3.2×42.3×3.75-1.25×42.3×1.6=42.3×(3.2×3.75-1.25×1.6)=42.3×(4×0.8×3.75-1.25×4×0.4)=42.3×(4×0.4×2×3.75-1.25×4×0.4)=42.3×(4x0.4x7.5-1.25x4x0.4)=42.3×[4×0.4×(7.5-1.25)]=42.3×[4×0.4×6.25]=42.3×(4×2.5)=42371.8+18÷1.5-0.5×0.3=1.8+12-0.15=13.8-0.15=13.656.5×8+3.5×8-47=52+28-47=80-47(80-9.8)×5分之2-1.32=70.2X2/5-1.32=28.08-1.32=26.768×7分之4÷[1÷(3.2-2.95)]=8×4/7÷[1÷0.25]=8×4/7÷4=8/72700×（506－499）÷900=2700×7÷900=18900÷900=2133.02－（148.4－90.85）÷2.5=33.02－57.55÷2.5=33.02－23.02=10（1÷1－1）÷5.1=（1－1）÷5.1=0÷5.1=018.1＋（3－0.299÷0.23）×1=18.1＋1.7×1=18.1＋1.7=19.8[-18]+29+[-52]+60= 19[-3]+[-2]+[-1]+0+1+2= -3[-301]+125+301+[-75]= 50[-1]+[-1/2]+3/4+[-1/4]= -1[-7/2]+5/6+[-0.5]+4/5+19/6= 1.25[-26.54]+[-6.14]+18.54+6.14= -81.125+[-17/5]+[-1/8]+[-0.6]= -3[-98+76+(-87)]*23[56+(-75)-(7)]-(8+4+3)5+21*8/2-6-5968/21-8-11*8+61-2/9-7/9-564.6-(-3/4+1.6-4-3/4)1/2+3+5/6-7/12[2/3-4-1/4*(-0.4)]/1/3+222+(-4)+(-2)+4*3-2*8-8*1/2+8/1/8(2/3+1/2)/(-1/12)*(-12)(-28)/(-6+4)+(-1)2/(-2)+0/7-(-8)*(-2)(1/4-5/6+1/3+2/3)/1/218-6/(-3)*(-2)(5+3/8*8/30/(-2)-3(-84)/2*(-3)/(-6)1/2*(-4/15)/2/3-3x+2y-5x-7y1437×27＋27×563 〔75-（12+18）〕÷152160÷〔（83-79）×18〕 280＋840÷24×5325÷13×(266－250) 85×(95－1440÷24)58870÷(105＋20×2) 1437×27＋27×56381432÷(13×52＋78) [37.85-（7.85+6.4）] ×30156×[(17.7-7.2)÷3] （947－599）＋76×6436×(913－276÷23) [192－（54＋38）]×67[（7.1-5.6）×0.9-1.15]÷2.5 81432÷(13×52＋78)5.4÷[2.6×（3.7-2.9）+0.62] （947－599）＋76×64 60－(9.5＋28.9)]÷0.18 2.881÷0.43－0.24×3.5 20×[(2.44－1.8)÷0.4＋0.15] 28-(3.4 1.25×2.4) 0.8×〔15.5-(3.21 5.79)〕 （31.8 3.2×4）÷5 194－64.8÷1.8×0.9 36.72÷4.25×9.9 3.416÷（0.016×35） 0.8×[(10－6.76)÷1.2]（136+64）×（65-345÷23） (6.8-6.8×0.55)÷8.50.12× 4.8÷0.12×4.8 （58+37）÷（64-9×5）812-700÷（9+31×11） （3.2×1.5+2.5）÷1.685+14×（14+208÷26） 120-36×4÷18+35（284+16）×（512-8208÷18） 9.72×1.6-18.305÷74/7÷[1/3×（3/5-3/10）] （4/5+1/4）÷7/3+7/1012.78－0÷（ 13.4＋156.6 ） 37.812-700÷（9+31×11） （136+64）×（65-345÷23） 3.2×（1.5+2.5）÷1.685+14×（14+208÷26） （58+37）÷（64-9×5）(6.8-6.8×0.55)÷8.5 （284+16）×（512-8208÷18）0.12× 4.8÷0.12×4.8 （3.2×1.5+2.5）÷1.6120-36×4÷18+35 10.15-10.75×0.4-5.75.8×（3.87-0.13）+4.2×3.74 347+45×2-4160÷5232.52-（6+9.728÷3.2）×2.5 87（58+37）÷（64-9×5）[（7.1-5.6）×0.9-1.15] ÷2.5 （3.2×1.5+2.5）÷1.65.4÷[2.6×（3.7-2.9）+0.62] 12×6÷（12-7.2）-63.2×6+（1.5+2.5）÷1.6 （3.2×1.5+2.5）÷1.65.8×（3.87-0.13）+4.2×3.7433.02－（148.4－90.85）÷2.51)23+(-73)(2)(-84)+(-49)(3)7+(-2.04)(4)4.23+(-7.57)(5)(-7/3)+(-7/6)(6)9/4+(-3/2)(7)3.75+(2.25)+5/4(8)-3.75+(+5/4)+(-1.5)(9)(-17/4)+(-10/3)+(+13/3)+(11/3)(10)(-1.8)+(+0.2)+(-1.7)+(0.1)+(+1.8)+(+1.4)(11)(+1.3)-(+17/7)(12)(-2)-(+2/3)(13)|(-7.2)-(-6.3)+(1.1)|(14)|(-5/4)-(-3/4)|-|1-5/4-|-3/4|)(15)(-2/199)*(-7/6-3/2+8/3)(16)4a)*(-3b)*(5c)*1/61. 3/7 × 49/9 - 4/32. 8/9 × 15/36 + 1/273. 12× 5/6 – 2/9 ×34. 8× 5/4 + 1/45. 6÷ 3/8 – 3/8 ÷66. 4/7 × 5/9 + 3/7 × 5/97. 5/2 -（ 3/2 + 4/5 ）8. 7/8 + （ 1/8 + 1/9 ）9. 9 × 5/6 + 5/610. 3/4 × 8/9 - 1/30.12χ＋1.8×0.9=7.2 (9－5χ)×0.3=1.02 6.4χ-χ=28+4.411. 7 × 5/49 + 3/1412. 6 ×（ 1/2 + 2/3 ）13. 8 × 4/5 + 8 × 11/514. 31 × 5/6 – 5/615. 9/7 - （ 2/7 – 10/21 ）16. 5/9 × 18 – 14 × 2/717. 4/5 × 25/16 + 2/3 × 3/418. 14 × 8/7 – 5/6 × 12/1519. 17/32 – 3/4 × 9/2420. 3 × 2/9 + 1/321. 5/7 × 3/25 + 3/722. 3/14 ×× 2/3 + 1/623. 1/5 × 2/3 + 5/624. 9/22 + 1/11 ÷ 1/225. 5/3 × 11/5 + 4/326. 45 × 2/3 + 1/3 × 1527. 7/19 + 12/19 × 5/628. 1/4 + 3/4 ÷ 2/329. 8/7 × 21/16 + 1/230. 101 × 1/5 – 1/5 × 2131.50＋160÷40 （58+370）÷（64-45）32.120-144÷18+3533.347+45×2-4160÷5234（58+37）÷（64-9×5）35.95÷（64-45）36.178-145÷5×6+42 420+580-64×21÷2837.812-700÷（9+31×11） （136+64）×（65-345÷23）38.85+14×（14+208÷26）39.（284+16）×（512-8208÷18）40.120-36×4÷18+3541.（58+37）÷（64-9×5）42.(6.8-6.8×0.55)÷8.543.0.12× 4.8÷0.12×4.844.（3.2×1.5+2.5）÷1.6 （2）3.2×（1.5+2.5）÷1.645.6-1.6÷4= 5.38+7.85-5.37=46.7.2÷0.8-1.2×5= 6-1.19×3-0.43=47.6.5×（4.8-1.2×4）= 0.68×1.9+0.32×1.948.10.15-10.75×0.4-5.749.5.8×（3.87-0.13）+4.2×3.7450.32.52-（6+9.728÷3.2）×2.551.-5+58+13+90+78-(-56)+5052.-7*2-57/(353.(-7)*2/(1/3)+79/(3+6/4）54.123+456+789+98/(-4)55.369/33-(-54-31/15.5)56.39+{3x[42/2x(3x8)]}57.9x8x7/5x(4+6)58.11x22/(4+12/2)59.94+(-60)/101.a^3-2b^3+ab(2a-b)=a^3+2a^2b-2b^3-ab^2=a^2(a+2b)-b^2(2b+a)=(a+2b)(a^2-b^2)=(a+2b)(a+b)(a-b)2.(x^2+y^2)^2-4y(x^2+y^2)+4y^2=(x^2+y^2-2y)^23.(x^2+2x)^2+3(x^2+2x)+x^2+2x+3=(x^2+2x)^2+4(x^2+2x)+3=(x^2+2x+3)(x^2+2x+1)=(x^2+2x+3)(x+1)^24.(a+1)(a+2)+(2a+1)(a-2)-12=a^2+3a+2+2a^2-3a-2-12=3a^2-12=3(a+2)(a-2)5.x^2(y+z)^2-2xy(x-z)(y+z)+y^2(x-z)^2=[x(y+z)-y(x-z)]^2=(xz+yz)^2=z^2(x+y)^26.3(a+2)^2+28(a+2)-20=[3(a+2)-2][(a+2)+10]=(3a+4)(a+12)7.(a+b)^2-(b-c)^2+a^2-c^2=(a+b)^2-c^2+a^2-(b-c)^2=(a+b+c)(a+b-c)+(a+b-c)(a-b+c)=(a+b-c)(a+b+c+a-b+c)=2(a+b-c)(a+c)8.x(x+1)(x^2+x-1)-2=(x^2+x)(x^2+x-1)-2=(x^2+x)^2-(x^2+x)-2=(x^2+x-2)(x^2+x+1)=(x+2)(x-1)(x^2+x+1)1. 3/7 × 49/9 - 4/32. 8/9 × 15/36 + 1/273. 12× 5/6 – 2/9 ×34. 8× 5/4 + 1/45. 6÷ 3/8 – 3/8 ÷66. 4/7 × 5/9 + 3/7 × 5/97. 5/2 -（ 3/2 + 4/5 ）8. 7/8 + （ 1/8 + 1/9 ）9. 9 × 5/6 + 5/610. 3/4 × 8/9 - 1/30.12χ＋1.8×0.9=7.2 (9－5χ)×0.3=1.02 6.4χ-χ=28+4.411. 7 × 5/49 + 3/1412. 6 ×（ 1/2 + 2/3 ）13. 8 × 4/5 + 8 × 11/514. 31 × 5/6 – 5/615. 9/7 - （ 2/7 – 10/21 ）16. 5/9 × 18 – 14 × 2/717. 4/5 × 25/16 + 2/3 × 3/418. 14 × 8/7 – 5/6 × 12/1519. 17/32 – 3/4 × 9/2420. 3 × 2/9 + 1/321. 5/7 × 3/25 + 3/722. 3/14 ×× 2/3 + 1/623. 1/5 × 2/3 + 5/624. 9/22 + 1/11 ÷ 1/225. 5/3 × 11/5 + 4/326. 45 × 2/3 + 1/3 × 1527. 7/19 + 12/19 × 5/628. 1/4 + 3/4 ÷ 2/329. 8/7 × 21/16 + 1/230. 101 × 1/5 – 1/5 × 2131.50＋160÷40 （58+370）÷（64-45）32.120-144÷18+3533.347+45×2-4160÷5234（58+37）÷（64-9×5）35.95÷（64-45）36.178-145÷5×6+42 420+580-64×21÷2837.812-700÷（9+31×11） （136+64）×（65-345÷23）38.85+14×（14+208÷26）39.（284+16）×（512-8208÷18）40.120-36×4÷18+3541.（58+37）÷（64-9×5）42.(6.8-6.8×0.55)÷8.543.0.12× 4.8÷0.12×4.844.（3.2×1.5+2.5）÷1.6 （2）3.2×（1.5+2.5）÷1.645.6-1.6÷4= 5.38+7.85-5.37=46.7.2÷0.8-1.2×5= 6-1.19×3-0.43=47.6.5×（4.8-1.2×4）= 0.68×1.9+0.32×1.948.10.15-10.75×0.4-5.749.5.8×（3.87-0.13）+4.2×3.7450.32.52-（6+9.728÷3.2）×2.551.-5+58+13+90+78-(-56)+5052.-7*2-57/(353.(-7)*2/(1/3)+79/(3+6/4）54.123+456+789+98/(-4)55.369/33-(-54-31/15.5)56.39+{3x[42/2x(3x8)]}57.9x8x7/5x(4+6)58.11x22/(4+12/2)59.94+(-60)/101.a^3-2b^3+ab(2a-b)=a^3+2a^2b-2b^3-ab^2=a^2(a+2b)-b^2(2b+a)=(a+2b)(a^2-b^2)=(a+2b)(a+b)(a-b)2.(x^2+y^2)^2-4y(x^2+y^2)+4y^2=(x^2+y^2-2y)^23.(x^2+2x)^2+3(x^2+2x)+x^2+2x+3=(x^2+2x)^2+4(x^2+2x)+3=(x^2+2x+3)(x^2+2x+1)=(x^2+2x+3)(x+1)^24.(a+1)(a+2)+(2a+1)(a-2)-12=a^2+3a+2+2a^2-3a-2-12=3a^2-12=3(a+2)(a-2)5.x^2(y+z)^2-2xy(x-z)(y+z)+y^2(x-z)^2=[x(y+z)-y(x-z)]^2=(xz+yz)^2=z^2(x+y)^26.3(a+2)^2+28(a+2)-20=[3(a+2)-2][(a+2)+10]=(3a+4)(a+12)7.(a+b)^2-(b-c)^2+a^2-c^2=(a+b)^2-c^2+a^2-(b-c)^2=(a+b+c)(a+b-c)+(a+b-c)(a-b+c)=(a+b-c)(a+b+c+a-b+c)=2(a+b-c)(a+c)8.x(x+1)(x^2+x-1)-2=(x^2+x)(x^2+x-1)-2=(x^2+x)^2-(x^2+x)-2=(x^2+x-2)(x^2+x+1) =(x+2)(x-1)(x^2+x+1)
2x+17=353x-64=1112+8x=520.8x-4.2=2.22x+5=103x-15=754x+4o=3203x+77=1225x-1.6=0.66x-4=2010x-0.6=2.4500-12x=1401) 66x+17y=396725x+y=1200答案：x=48 y=47(2) 18x+23y=230374x-y=1998答案：x=27 y=79(3) 44x+90y=779644x+y=3476答案：x=79 y=48(4) 76x-66y=408230x-y=2940答案：x=98 y=51(5) 67x+54y=854671x-y=5680答案：x=80 y=59(6) 42x-95y=-141021x-y=1575答案：x=75 y=48(7) 47x-40y=85334x-y=2006答案：x=59 y=48(8) 19x-32y=-178675x+y=4950答案：x=66 y=95(9) 97x+24y=720258x-y=2900答案：x=50 y=98(10) 42x+85y=636263x-y=1638答案：x=26 y=62(11) 85x-92y=-251827x-y=486答案：x=18 y=44(12) 79x+40y=241956x-y=1176答案：x=21 y=19(13) 80x-87y=215622x-y=880答案：x=40 y=12(14) 32x+62y=513457x+y=2850答案：x=50 y=57(15) 83x-49y=8259x+y=2183答案：x=37 y=61(16) 91x+70y=584595x-y=4275答案：x=45 y=25(17) 29x+44y=528188x-y=3608答案：x=41 y=93(18) 25x-95y=-435540x-y=2000答案：x=50 y=59(19) 54x+68y=328478x+y=1404答案：x=18 y=34(20) 70x+13y=352052x+y=2132答案：x=41 y=50(21) 48x-54y=-318624x+y=1080答案：x=45 y=99(22) 36x+77y=761947x-y=799答案：x=17 y=91(23) 13x-42y=-271731x-y=1333答案：x=43 y=78(24) 28x+28y=333252x-y=4628答案：x=89 y=30(25) 62x-98y=-256446x-y=2024答案：x=44 y=54(26) 79x-76y=-438826x-y=832答案：x=32 y=91(27) 63x-40y=-82142x-y=546答案：x=13 y=41(28) 69x-96y=-120942x+y=3822答案：x=91 y=78(29) 85x+67y=733811x+y=308答案：x=28 y=74(30) 78x+74y=1292814x+y=1218答案：x=87 y=83(31) 39x+42y=533159x-y=5841答案：x=99 y=35(32) 29x+18y=191658x+y=2320答案：x=40 y=42(33) 40x+31y=604345x-y=3555答案：x=79 y=93(34) 47x+50y=859845x+y=3780答案：x=84 y=93(35) 45x-30y=-145529x-y=725答案：x=25 y=86(36) 11x-43y=-136147x+y=799答案：x=17 y=36(37) 33x+59y=325494x+y=1034答案：x=11 y=49(38) 89x-74y=-273568x+y=1020答案：x=15 y=55(39) 94x+71y=751778x+y=3822答案：x=49 y=41(40) 28x-62y=-493446x+y=552答案：x=12 y=85(41) 75x+43y=847217x-y=1394答案：x=82 y=54(42) 41x-38y=-118029x+y=1450答案：x=50 y=85(43) 22x-59y=82463x+y=4725答案：x=75 y=14(44) 95x-56y=-40190x+y=1530答案：x=17 y=36(45) 93x-52y=-85229x+y=464答案：x=16 y=45(46) 93x+12y=882354x+y=4914答案：x=91 y=30(47) 21x-63y=8420x+y=1880答案：x=94 y=30(48) 48x+93y=975638x-y=950答案：x=25 y=92(49) 99x-67y=401175x-y=5475答案：x=73 y=48(50) 83x+64y=929190x-y=3690答案：x=41 y=923X+18=52 x=34/34Y+11=22 y=11/43X*9=5 x=5/278Z/6=48 z=363X+7=59 x=52/34Y-69=81 y=75/48X*6=5 x=5/487Z/9=4 y=63/715X+8-5X=54 x=4.65Y*5=27 y=27/408x+2=10 x=1x*8=88 x=11y-90=1 y=912x-98=2 x=506x*6=12 x=1/35-6=5x x=-1/56*x=42 x=755-y=33 y=2211*3x=60 x=20/118-y=2 y=-61.x+2=32.x+32=333.x+6=184.4+x=475.19-x=86.98-x=137.66-x=108.5x=109.3x=2710.7x=711.8x=812.9x=913.10x=10014.66x=66015.7x=4916.2x=417.3x=918.4x=1619.5x=2520.6x=3621.8x=6422.9x=8123.10x=10024.11x=12125.12x=14426.13x=16927.14x=19628.15x=22529.16x=25630.17x=28931.18x=32432.19x=36133.20x=40031.21x=44132.22x=48433.111x=1232134.1111x=123432135.11111x=12345432136.111111x=1234565432137.46/x=2338.64/x=839.99/x=1140.1235467564x=041.2x+1= -2+x42.4x-3(20-x)=343.．-2(x-1)=444.3X+189=52145.4Y+119=22 546.3X+77=5947.4Y-6985=8148.X=0.149.5X=55.550.Y=50-85
我也不及咪
小王八蛋，王
1.25×（8+10） =1.25×8+1.25×10=10+12.5=22.59123-（123+8.8）=9123-123-8.8=9000-8.8=8991.21.24×8.3+8.3×1.76=8.3×（1.24+1.76)=8.3×3=24.99999×1001=9999×（1000+1）=9999×1000+9999×1=1000899914.8×6.3-6.3×6.5＋8.3×3.7=（14.8-6.5）×6.3＋8.3×3.7=8.3×6.3+8.3×3.78.3×（6.3＋3.7）=8.3×10=831.24+0.78+8.76=（1.24+8.76）+0.78=10+0.78=10.78933-157-43=933-（157+43）=933-200=7334821-998=4821-1000+2=3823I32×125×25=4×8×125×25=（4×25）×（8×125）=100×1000=1000009048÷268=（2600+2600+2600+1248）÷26=2600÷26+2600÷26+2600÷26+1248÷269=100+100+100+48=3482881÷ 43=（1290+1591）÷ 434=1290÷43+1591÷43=30+373.2×42.3×3.75-12.5×0.423×16=3.2×42.3×3.75-1.25×42.3×1.6=42.3×(3.2×3.75-1.25×1.6)=42.3×(4×0.8×3.75-1.25×4×0.4)=42.3×(4×0.4×2×3.75-1.25×4×0.4)=42.3×(4x0.4x7.5-1.25x4x0.4)=42.3×[4×0.4×(7.5-1.25)]=42.3×[4×0.4×6.25]=42.3×(4×2.5)=42371.8+18÷1.5-0.5×0.3=1.8+12-0.15=13.8-0.15=13.656.5×8+3.5×8-47=52+28-47=80-47(80-9.8)×5分之2-1.32=70.2X2/5-1.32=28.08-1.32=26.768×7分之4÷[1÷(3.2-2.95)]=8×4/7÷[1÷0.25]=8×4/7÷4=8/72700×（506－499）÷900=2700×7÷900=18900÷900=2133.02－（148.4－90.85）÷2.5=33.02－57.55÷2.5=33.02－23.02=10（1÷1－1）÷5.1=（1－1）÷5.1=0÷5.1=018.1＋（3－0.299÷0.23）×1=18.1＋1.7×1=18.1＋1.7=19.8[-18]+29+[-52]+60= 19[-3]+[-2]+[-1]+0+1+2= -3[-301]+125+301+[-75]= 50[-1]+[-1/2]+3/4+[-1/4]= -1[-7/2]+5/6+[-0.5]+4/5+19/6= 1.25[-26.54]+[-6.14]+18.54+6.14= -81.125+[-17/5]+[-1/8]+[-0.6]= -3[-98+76+(-87)]*23[56+(-75)-(7)]-(8+4+3)5+21*8/2-6-5968/21-8-11*8+61-2/9-7/9-564.6-(-3/4+1.6-4-3/4)1/2+3+5/6-7/12[2/3-4-1/4*(-0.4)]/1/3+222+(-4)+(-2)+4*3-2*8-8*1/2+8/1/8(2/3+1/2)/(-1/12)*(-12)(-28)/(-6+4)+(-1)2/(-2)+0/7-(-8)*(-2)(1/4-5/6+1/3+2/3)/1/218-6/(-3)*(-2)(5+3/8*8/30/(-2)-3(-84)/2*(-3)/(-6)1/2*(-4/15)/2/3-3x+2y-5x-7y1437×27＋27×563 〔75-（12+18）〕÷152160÷〔（83-79）×18〕 280＋840÷24×5325÷13×(266－250) 85×(95－1440÷24)58870÷(105＋20×2) 1437×27＋27×56381432÷(13×52＋78) [37.85-（7.85+6.4）] ×30156×[(17.7-7.2)÷3] （947－599）＋76×6436×(913－276÷23) [192－（54＋38）]×67[（7.1-5.6）×0.9-1.15]÷2.5 81432÷(13×52＋78)5.4÷[2.6×（3.7-2.9）+0.62] （947－599）＋76×64 60－(9.5＋28.9)]÷0.18 2.881÷0.43－0.24×3.5 20×[(2.44－1.8)÷0.4＋0.15] 28-(3.4 1.25×2.4) 0.8×〔15.5-(3.21 5.79)〕 （31.8 3.2×4）÷5 194－64.8÷1.8×0.9 36.72÷4.25×9.9 3.416÷（0.016×35） 0.8×[(10－6.76)÷1.2]（136+64）×（65-345÷23） (6.8-6.8×0.55)÷8.50.12× 4.8÷0.12×4.8 （58+37）÷（64-9×5）812-700÷（9+31×11） （3.2×1.5+2.5）÷1.685+14×（14+208÷26） 120-36×4÷18+35（284+16）×（512-8208÷18） 9.72×1.6-18.305÷74/7÷[1/3×（3/5-3/10）] （4/5+1/4）÷7/3+7/1012.78－0÷（ 13.4＋156.6 ） 37.812-700÷（9+31×11） （136+64）×（65-345÷23） 3.2×（1.5+2.5）÷1.685+14×（14+208÷26） （58+37）÷（64-9×5）(6.8-6.8×0.55)÷8.5 （284+16）×（512-8208÷18）0.12× 4.8÷0.12×4.8 （3.2×1.5+2.5）÷1.6120-36×4÷18+35 10.15-10.75×0.4-5.75.8×（3.87-0.13）+4.2×3.74 347+45×2-4160÷5232.52-（6+9.728÷3.2）×2.5 87（58+37）÷（64-9×5）[（7.1-5.6）×0.9-1.15] ÷2.5 （3.2×1.5+2.5）÷1.65.4÷[2.6×（3.7-2.9）+0.62] 12×6÷（12-7.2）-63.2×6+（1.5+2.5）÷1.6 （3.2×1.5+2.5）÷1.65.8×（3.87-0.13）+4.2×3.7433.02－（148.4－90.85）÷2.51)23+(-73)(2)(-84)+(-49)(3)7+(-2.04)(4)4.23+(-7.57)(5)(-7/3)+(-7/6)(6)9/4+(-3/2)(7)3.75+(2.25)+5/4(8)-3.75+(+5/4)+(-1.5)(9)(-17/4)+(-10/3)+(+13/3)+(11/3)(10)(-1.8)+(+0.2)+(-1.7)+(0.1)+(+1.8)+(+1.4)(11)(+1.3)-(+17/7)(12)(-2)-(+2/3)(13)|(-7.2)-(-6.3)+(1.1)|(14)|(-5/4)-(-3/4)|-|1-5/4-|-3/4|)(15)(-2/199)*(-7/6-3/2+8/3)(16)4a)*(-3b)*(5c)*1/61. 3/7 × 49/9 - 4/32. 8/9 × 15/36 + 1/273. 12× 5/6 – 2/9 ×34. 8× 5/4 + 1/45. 6÷ 3/8 – 3/8 ÷66. 4/7 × 5/9 + 3/7 × 5/97. 5/2 -（ 3/2 + 4/5 ）8. 7/8 + （ 1/8 + 1/9 ）9. 9 × 5/6 + 5/610. 3/4 × 8/9 - 1/30.12χ＋1.8×0.9=7.2 (9－5χ)×0.3=1.02 6.4χ-χ=28+4.411. 7 × 5/49 + 3/1412. 6 ×（ 1/2 + 2/3 ）13. 8 × 4/5 + 8 × 11/514. 31 × 5/6 – 5/615. 9/7 - （ 2/7 – 10/21 ）16. 5/9 × 18 – 14 × 2/717. 4/5 × 25/16 + 2/3 × 3/418. 14 × 8/7 – 5/6 × 12/1519. 17/32 – 3/4 × 9/2420. 3 × 2/9 + 1/321. 5/7 × 3/25 + 3/722. 3/14 ×× 2/3 + 1/623. 1/5 × 2/3 + 5/624. 9/22 + 1/11 ÷ 1/225. 5/3 × 11/5 + 4/326. 45 × 2/3 + 1/3 × 1527. 7/19 + 12/19 × 5/628. 1/4 + 3/4 ÷ 2/329. 8/7 × 21/16 + 1/230. 101 × 1/5 – 1/5 × 2131.50＋160÷40 （58+370）÷（64-45）32.120-144÷18+3533.347+45×2-4160÷5234（58+37）÷（64-9×5）35.95÷（64-45）36.178-145÷5×6+42 420+580-64×21÷2837.812-700÷（9+31×11） （136+64）×（65-345÷23）38.85+14×（14+208÷26）39.（284+16）×（512-8208÷18）40.120-36×4÷18+3541.（58+37）÷（64-9×5）42.(6.8-6.8×0.55)÷8.543.0.12× 4.8÷0.12×4.844.（3.2×1.5+2.5）÷1.6 （2）3.2×（1.5+2.5）÷1.645.6-1.6÷4= 5.38+7.85-5.37=46.7.2÷0.8-1.2×5= 6-1.19×3-0.43=47.6.5×（4.8-1.2×4）= 0.68×1.9+0.32×1.948.10.15-10.75×0.4-5.749.5.8×（3.87-0.13）+4.2×3.7450.32.52-（6+9.728÷3.2）×2.551.-5+58+13+90+78-(-56)+5052.-7*2-57/(353.(-7)*2/(1/3)+79/(3+6/4）54.123+456+789+98/(-4)55.369/33-(-54-31/15.5)56.39+{3x[42/2x(3x8)]}57.9x8x7/5x(4+6)58.11x22/(4+12/2)59.94+(-60)/101.a^3-2b^3+ab(2a-b)=a^3+2a^2b-2b^3-ab^2=a^2(a+2b)-b^2(2b+a)=(a+2b)(a^2-b^2)=(a+2b)(a+b)(a-b)2.(x^2+y^2)^2-4y(x^2+y^2)+4y^2=(x^2+y^2-2y)^23.(x^2+2x)^2+3(x^2+2x)+x^2+2x+3=(x^2+2x)^2+4(x^2+2x)+3=(x^2+2x+3)(x^2+2x+1)=(x^2+2x+3)(x+1)^24.(a+1)(a+2)+(2a+1)(a-2)-12=a^2+3a+2+2a^2-3a-2-12=3a^2-12=3(a+2)(a-2)5.x^2(y+z)^2-2xy(x-z)(y+z)+y^2(x-z)^2=[x(y+z)-y(x-z)]^2=(xz+yz)^2=z^2(x+y)^26.3(a+2)^2+28(a+2)-20=[3(a+2)-2][(a+2)+10]=(3a+4)(a+12)7.(a+b)^2-(b-c)^2+a^2-c^2=(a+b)^2-c^2+a^2-(b-c)^2=(a+b+c)(a+b-c)+(a+b-c)(a-b+c)=(a+b-c)(a+b+c+a-b+c)=2(a+b-c)(a+c)8.x(x+1)(x^2+x-1)-2=(x^2+x)(x^2+x-1)-2=(x^2+x)^2-(x^2+x)-2=(x^2+x-2)(x^2+x+1)=(x+2)(x-1)(x^2+x+1)1. 3/7 × 49/9 - 4/32. 8/9 × 15/36 + 1/273. 12× 5/6 – 2/9 ×34. 8× 5/4 + 1/45. 6÷ 3/8 – 3/8 ÷66. 4/7 × 5/9 + 3/7 × 5/97. 5/2 -（ 3/2 + 4/5 ）8. 7/8 + （ 1/8 + 1/9 ）9. 9 × 5/6 + 5/610. 3/4 × 8/9 - 1/30.12χ＋1.8×0.9=7.2 (9－5χ)×0.3=1.02 6.4χ-χ=28+4.411. 7 × 5/49 + 3/1412. 6 ×（ 1/2 + 2/3 ）13. 8 × 4/5 + 8 × 11/514. 31 × 5/6 – 5/615. 9/7 - （ 2/7 – 10/21 ）16. 5/9 × 18 – 14 × 2/717. 4/5 × 25/16 + 2/3 × 3/418. 14 × 8/7 – 5/6 × 12/1519. 17/32 – 3/4 × 9/2420. 3 × 2/9 + 1/321. 5/7 × 3/25 + 3/722. 3/14 ×× 2/3 + 1/623. 1/5 × 2/3 + 5/624. 9/22 + 1/11 ÷ 1/225. 5/3 × 11/5 + 4/326. 45 × 2/3 + 1/3 × 1527. 7/19 + 12/19 × 5/628. 1/4 + 3/4 ÷ 2/329. 8/7 × 21/16 + 1/230. 101 × 1/5 – 1/5 × 2131.50＋160÷40 （58+370）÷（64-45）32.120-144÷18+3533.347+45×2-4160÷5234（58+37）÷（64-9×5）35.95÷（64-45）36.178-145÷5×6+42 420+580-64×21÷2837.812-700÷（9+31×11） （136+64）×（65-345÷23）38.85+14×（14+208÷26）39.（284+16）×（512-8208÷18）40.120-36×4÷18+3541.（58+37）÷（64-9×5）42.(6.8-6.8×0.55)÷8.543.0.12× 4.8÷0.12×4.844.（3.2×1.5+2.5）÷1.6 （2）3.2×（1.5+2.5）÷1.645.6-1.6÷4= 5.38+7.85-5.37=46.7.2÷0.8-1.2×5= 6-1.19×3-0.43=47.6.5×（4.8-1.2×4）= 0.68×1.9+0.32×1.948.10.15-10.75×0.4-5.749.5.8×（3.87-0.13）+4.2×3.7450.32.52-（6+9.728÷3.2）×2.551.-5+58+13+90+78-(-56)+5052.-7*2-57/(353.(-7)*2/(1/3)+79/(3+6/4）54.123+456+789+98/(-4)55.369/33-(-54-31/15.5)56.39+{3x[42/2x(3x8)]}57.9x8x7/5x(4+6)58.11x22/(4+12/2)59.94+(-60)/101.a^3-2b^3+ab(2a-b)=a^3+2a^2b-2b^3-ab^2=a^2(a+2b)-b^2(2b+a)=(a+2b)(a^2-b^2)=(a+2b)(a+b)(a-b)2.(x^2+y^2)^2-4y(x^2+y^2)+4y^2=(x^2+y^2-2y)^23.(x^2+2x)^2+3(x^2+2x)+x^2+2x+3=(x^2+2x)^2+4(x^2+2x)+3=(x^2+2x+3)(x^2+2x+1)=(x^2+2x+3)(x+1)^24.(a+1)(a+2)+(2a+1)(a-2)-12=a^2+3a+2+2a^2-3a-2-12=3a^2-12=3(a+2)(a-2)5.x^2(y+z)^2-2xy(x-z)(y+z)+y^2(x-z)^2=[x(y+z)-y(x-z)]^2=(xz+yz)^2=z^2(x+y)^26.3(a+2)^2+28(a+2)-20=[3(a+2)-2][(a+2)+10]=(3a+4)(a+12)7.(a+b)^2-(b-c)^2+a^2-c^2=(a+b)^2-c^2+a^2-(b-c)^2=(a+b+c)(a+b-c)+(a+b-c)(a-b+c)=(a+b-c)(a+b+c+a-b+c)=2(a+b-c)(a+c)8.x(x+1)(x^2+x-1)-2=(x^2+x)(x^2+x-1)-2=(x^2+x)^2-(x^2+x)-2=(x^2+x-2)(x^2+x+1) =(x+2)(x-1)(x^2+x+1)
2x+17=353x-64=1112+8x=520.8x-4.2=2.22x+5=103x-15=754x+4o=3203x+77=1225x-1.6=0.66x-4=2010x-0.6=2.4500-12x=1401) 66x+17y=396725x+y=1200答案：x=48 y=47(2) 18x+23y=230374x-y=1998答案：x=27 y=79(3) 44x+90y=779644x+y=3476答案：x=79 y=48(4) 76x-66y=408230x-y=2940答案：x=98 y=51(5) 67x+54y=854671x-y=5680答案：x=80 y=59(6) 42x-95y=-141021x-y=1575答案：x=75 y=48(7) 47x-40y=85334x-y=2006答案：x=59 y=48(8) 19x-32y=-178675x+y=4950答案：x=66 y=95(9) 97x+24y=720258x-y=2900答案：x=50 y=98(10) 42x+85y=636263x-y=1638答案：x=26 y=62(11) 85x-92y=-251827x-y=486答案：x=18 y=44(12) 79x+40y=241956x-y=1176答案：x=21 y=19(13) 80x-87y=215622x-y=880答案：x=40 y=12(14) 32x+62y=513457x+y=2850答案：x=50 y=57(15) 83x-49y=8259x+y=2183答案：x=37 y=61(16) 91x+70y=584595x-y=4275答案：x=45 y=25(17) 29x+44y=528188x-y=3608答案：x=41 y=93(18) 25x-95y=-435540x-y=2000答案：x=50 y=59(19) 54x+68y=328478x+y=1404答案：x=18 y=34(20) 70x+13y=352052x+y=2132答案：x=41 y=50(21) 48x-54y=-318624x+y=1080答案：x=45 y=99(22) 36x+77y=761947x-y=799答案：x=17 y=91(23) 13x-42y=-271731x-y=1333答案：x=43 y=78(24) 28x+28y=333252x-y=4628答案：x=89 y=30(25) 62x-98y=-256446x-y=2024答案：x=44 y=54(26) 79x-76y=-438826x-y=832答案：x=32 y=91(27) 63x-40y=-82142x-y=546答案：x=13 y=41(28) 69x-96y=-120942x+y=3822答案：x=91 y=78(29) 85x+67y=733811x+y=308答案：x=28 y=74(30) 78x+74y=1292814x+y=1218答案：x=87 y=83(31) 39x+42y=533159x-y=5841答案：x=99 y=35(32) 29x+18y=191658x+y=2320答案：x=40 y=42(33) 40x+31y=604345x-y=3555答案：x=79 y=93(34) 47x+50y=859845x+y=3780答案：x=84 y=93(35) 45x-30y=-145529x-y=725答案：x=25 y=86(36) 11x-43y=-136147x+y=799答案：x=17 y=36(37) 33x+59y=325494x+y=1034答案：x=11 y=49(38) 89x-74y=-273568x+y=1020答案：x=15 y=55(39) 94x+71y=751778x+y=3822答案：x=49 y=41(40) 28x-62y=-493446x+y=552答案：x=12 y=85(41) 75x+43y=847217x-y=1394答案：x=82 y=54(42) 41x-38y=-118029x+y=1450答案：x=50 y=85(43) 22x-59y=82463x+y=4725答案：x=75 y=14(44) 95x-56y=-40190x+y=1530答案：x=17 y=36(45) 93x-52y=-85229x+y=464答案：x=16 y=45(46) 93x+12y=882354x+y=4914答案：x=91 y=30(47) 21x-63y=8420x+y=1880答案：x=94 y=30(48) 48x+93y=975638x-y=950答案：x=25 y=92(49) 99x-67y=401175x-y=5475答案：x=73 y=48(50) 83x+64y=929190x-y=3690答案：x=41 y=923X+18=52 x=34/34Y+11=22 y=11/43X*9=5 x=5/278Z/6=48 z=363X+7=59 x=52/34Y-69=81 y=75/48X*6=5 x=5/487Z/9=4 y=63/715X+8-5X=54 x=4.65Y*5=27 y=27/408x+2=10 x=1x*8=88 x=11y-90=1 y=912x-98=2 x=506x*6=12 x=1/35-6=5x x=-1/56*x=42 x=755-y=33 y=2211*3x=60 x=20/118-y=2 y=-61.x+2=32.x+32=333.x+6=184.4+x=475.19-x=86.98-x=137.66-x=108.5x=109.3x=2710.7x=711.8x=812.9x=913.10x=10014.66x=66015.7x=4916.2x=417.3x=918.4x=1619.5x=2520.6x=3621.8x=6422.9x=8123.10x=10024.11x=12125.12x=14426.13x=16927.14x=19628.15x=22529.16x=25630.17x=28931.18x=32432.19x=36133.20x=40031.21x=44132.22x=48433.111x=1232134.1111x=123432135.11111x=12345432136.111111x=1234565432137.46/x=2338.64/x=839.99/x=1140.1235467564x=041.2x+1= -2+x42.4x-3(20-x)=343.．-2(x-1)=444.3X+189=52145.4Y+119=22 546.3X+77=5947.4Y-6985=8148.X=0.149.5X=55.550.Y=50-85
我也不及咪
小王八蛋，王
初一数学有理数计算题100道
-5+21*8/2-6-59 68/21-8-11*8+61-2/9-7/9-564.6-(-3/4+1.6-4-3/4)1/2+3+5/6-7/12[2/3-4-1/4*(-0.4)]/1/3+222+(-4)+(-2)+4*3-2*8-8*1/2+8/1/8(2/3+1/2)/(-1/12)*(-12)(-28)/(-6+4)+(-1)2/(-2)+0/7-(-8)*(-2)(1/4-5/6+1/3+2/3)/1/218-6/(-3)*(-2)(5+3/8*8/30/(-2)-3(-84)/2*(-3)/(-6)1/2*(-4/15)/2/3-3x+2y-5x-7y-5+21*8/2-6-5968/21-8-11*8+61-2/9-7/9-562.4-(-3/5)+(-3.1)+4/5(-6/13)+(-7/13)-(-2)3/4-(-11/6)+(-7/3)11+(-22)-3×(-11)(-0.1)÷1/2×(-100)2.4-(-3/5)+(-3.1)+4/5(-6/13)+(-7/13)-(-2)3/4-(-11/6)+(-7/3)11+(-22)-3×(-11)(-0.1)÷1/2×(-100) 4.6-(-3/4+1.6-4-3/4)1/2+3+5/6-7/12[2/3-4-1/4*(-0.4)]/1/3+222+(-4)+(-2)+4*3-2*8-8*1/2+8/1/8(2/3+1/2)/(-1/12)*(-12)(-28)/(-6+4)+(-1)2/(-2)+0/7-(-8)*(-2)(1/4-5/6+1/3+2/3)/1/218-6/(-3)*(-2)(5+3/8*8/30/(-2)-3(-84)/2*(-3)/(-6)1/2*(-4/15)/2/3-3x+2y-5x-7y.(-8)-(-1)2.45+(-30)3.-1.5-(-11.5)4.-1/4-(-1/2)5.15-[1-(20-4)]6.-40-28-(-19)+(-24)7.22.54+(-4.4)+(-12.54)+4.4 8.(2/3-1/2)-(1/3-5/6)
书上+学探诊+启东=100
刷分
(-27)*(-25)*(-3)*(-40)
书上+学探诊+启东=100
刷分
(-27)*(-25)*(-3)*(-40)
初一数学上册有理数计算题,要正负数,乘方等100道
有理数的加减混合运算 (1) (-9)-(-13)+(-20)+(-2) (2) 3+13-(-7)/6 (3) (-2)-8-14-13 (4) (-7)*(-1)/7+8 (5) (-11)*4-(-18)/18 (6) 4+(-11)-1/(-3) (7) (-17)-6-16/(-18) (8) 5/7+(-1)-(-8) (9) (-1)*(-1)+15+1 (10) 3-(-5)*3/(-15) (11) 6*(-14)-(-14)+(-13) (12) (-15)*(-13)-(-17)-(-4) (13) (-20)/13/(-7)+11 (14) 8+(-1)/7+(-4) (15) (-13)-(-9)*16*(-12) (16) (-1)+4*19+(-2) (17) (-17)*(-9)-20+(-6) (18) (-5)/12-(-16)*(-15) 有理数的认识 有理数为整数（正整数、0、负整数）和分数的统称。正整数和正分数合称为正有理数，负整数和负分数合称为负有理数。因而有理数集的数可分为正有理数、负有理数和零。由于任何一个整数或分数都可以化为十进制循环小数，反之，每一个十进制循环小数也能化为整数或分数，因此，有理数也可以定义为十进制循环小数。
有理数的加减混合运算 1) (-9)-(-13)+(-20)+(-2)(2) 3+13-(-7)/6(3) (-2)-8-14-13(4) (-7)*(-1)/7+8(5) (-11)*4-(-18)/18(6) 4+(-11)-1/(-3)(7) (-17)-6-16/(-18)(8) 5/7+(-1)-(-8)(9) (-1)*(-1)+15+1(10) 3-(-5)*3/(-15)(11) 6*(-14)-(-14)+(-13)(12) (-15)*(-13)-(-17)-(-4)(13) (-20)/13/(-7)+11(14) 8+(-1)/7+(-4)(15) (-13)-(-9)*16*(-12)(16) (-1)+4*19+(-2)(17) (-17)*(-9)-20+(-6)(18) (-5)/12-(-16)*(-15)(19) (-3)-13*(-5)*13(20) 5+(-7)+17-10(21) (-10)-(-16)-13*(-16)(22) (-14)+4-19-12(23) 5*13/14/(-10)(24) 3*1*17/(-10)(25) 6+(-12)+15-(-15)(26) 15/9/13+(-7)(27) 2/(-10)*1-(-8)(28) 11/(-19)+(-14)-5(29) 19-16+18/(-11)(30) (-1)/19+(-5)+1(31) (-5)+19/10*(-5)(32) 11/(-17)*(-13)*12(33) (-8)+(-10)/8*17(34) 7-(-12)/(-1)+(-12)(35) 12+12-19+20(36) (-13)*(-11)*20+(-4)(37) 17/(-2)-2*(-19)(38) 1-12*(-16)+(-9)(39) 13*(-14)-15/20(40) (-15)*(-13)-6/(-9)(41) 15*(-1)/12+7(42) (-13)+(-16)+(-14)-(-6)(43) 14*12*(-20)*(-13)(44) 17-9-20+(-10)(45) 12/(-14)+(-14)+(-2)(46) (-15)-12/(-17)-(-3)(47) 6-3/9/(-8)(48) (-20)*(-15)*10*(-4)(49) 7/(-2)*(-3)/(-14)(50) 13/2*18*(-7)(51) 13*5+6+3(52) (-15)/5/3+(-20)(53) 19*4+17-4(54) (-11)-(-6)*(-4)*(-9)(55) (-16)+16-(-8)*(-13)(56) 16/(-1)/(-10)/(-20)(57) (-1)-(-9)-9/(-19)(58) 13*20*(-13)*4(59) 11*(-6)-3+18(60) (-20)+(-12)+(-1)+(-12)(61) (-19)-3*(-13)*4(62) (-13)/3-5*8(63) (-15)/1+17*(-18)(64) (-13)/3/19/8(65) (-3)/(-13)/20*5(66) 3/12/(-18)-18(67) 5*(-19)/13+(-6)(68) 4+4*(-19)-11(69) (-2)+17-5+(-1)(70) 9+(-3)*19*(-19)(71) (-12)-(-6)+17/2(72) 15*(-5)-(-3)/5(73) (-10)*2/(-1)/4(74) (-8)*16/(-6)+4(75) 2-11+12+10(76) (-3)+(-20)*(-7)*(-9)(77) (-15)+8-17/7(78) (-14)*10+18*2(79) (-7)+2-(-17)*19(80) (-7)/18/1+1(81) 11/(-9)-(-16)/17(82) 15+5*6-(-8)(83) (-13)*(-18)+18/(-6)(84) 11-(-1)/11*(-6)(85) (-4)+(-12)+19/6(86) (-18)/(-1)/(-19)+2(87) 9*(-8)*(-6)/11(88) 20*(-3)*(-5)+1(89) (-18)-2+(-11)/20(90) 15*1+4*17(91) 1-10+(-14)/(-1)(92) 10+(-4)*(-19)+(-12)(93) 15/14/5*7(94) 8+(-13)/3+1(95) (-14)+6+(-2)*(-14)(96) (-5)/(-13)/4+7(97) (-15)/(-2)/(-12)+(-2)(98) (-17)-(-20)-20*(-10)(99) (-7)-10-13/3(100) (-20)+(-18)+11+9 答案：1 -182 103/63 -374 95 -436 -(20/3)7 -(199/9)8 54/79 1710 211 -8312 21613 1021/9114 27/715 -174116 7317 12718 -(2885/12)19 84220 521 21422 -4123 -(13/28)24 -(51/10)25 2426 -(268/39)27 39/528 -(372/19)29 15/1130 -(77/19)31 -(29/2)32 1716/1733 -(117/4)34 -1735 2536 285637 59/238 18439 -(731/4)40 587/341 23/442 -3743 4368044 -2245 -(118/7)46 -(192/17)47 145/2448 -1200049 -(3/4)50 -81951 7452 -2153 8954 20555 -10456 -(2/25)57 161/1958 -1352059 -5160 -4561 13762 -(133/3)63 -32164 -(13/456)65 3/5266 -(1297/72)67 -(173/13)68 -8369 970 109271 5/272 -(372/5)73 574 76/375 1376 -126377 -(66/7)78 -10479 31880 11/1881 -(43/153)82 5383 23184 115/1185 -(77/6)86 20/1987 432/1188 30189 -(411/20)90 8391 592 7493 3/294 14/395 2096 369/5297 -(21/8)98 20399 -(64/3) 100 -18
有理数的加减混合运算 1) (-9)-(-13)+(-20)+(-2)(2) 3+13-(-7)/6(3) (-2)-8-14-13(4) (-7)*(-1)/7+8(5) (-11)*4-(-18)/18(6) 4+(-11)-1/(-3)(7) (-17)-6-16/(-18)(8) 5/7+(-1)-(-8)(9) (-1)*(-1)+15+1(10) 3-(-5)*3/(-15)(11) 6*(-14)-(-14)+(-13)(12) (-15)*(-13)-(-17)-(-4)(13) (-20)/13/(-7)+11(14) 8+(-1)/7+(-4)(15) (-13)-(-9)*16*(-12)(16) (-1)+4*19+(-2)(17) (-17)*(-9)-20+(-6)(18) (-5)/12-(-16)*(-15)(19) (-3)-13*(-5)*13(20) 5+(-7)+17-10(21) (-10)-(-16)-13*(-16)(22) (-14)+4-19-12(23) 5*13/14/(-10)(24) 3*1*17/(-10)(25) 6+(-12)+15-(-15)(26) 15/9/13+(-7)(27) 2/(-10)*1-(-8)(28) 11/(-19)+(-14)-5(29) 19-16+18/(-11)(30) (-1)/19+(-5)+1(31) (-5)+19/10*(-5)(32) 11/(-17)*(-13)*12(33) (-8)+(-10)/8*17(34) 7-(-12)/(-1)+(-12)(35) 12+12-19+20(36) (-13)*(-11)*20+(-4)(37) 17/(-2)-2*(-19)(38) 1-12*(-16)+(-9)(39) 13*(-14)-15/20(40) (-15)*(-13)-6/(-9)(41) 15*(-1)/12+7(42) (-13)+(-16)+(-14)-(-6)(43) 14*12*(-20)*(-13)(44) 17-9-20+(-10)(45) 12/(-14)+(-14)+(-2)(46) (-15)-12/(-17)-(-3)(47) 6-3/9/(-8)(48) (-20)*(-15)*10*(-4)(49) 7/(-2)*(-3)/(-14)(50) 13/2*18*(-7)(51) 13*5+6+3(52) (-15)/5/3+(-20)(53) 19*4+17-4(54) (-11)-(-6)*(-4)*(-9)(55) (-16)+16-(-8)*(-13)(56) 16/(-1)/(-10)/(-20)(57) (-1)-(-9)-9/(-19)(58) 13*20*(-13)*4(59) 11*(-6)-3+18(60) (-20)+(-12)+(-1)+(-12)(61) (-19)-3*(-13)*4(62) (-13)/3-5*8(63) (-15)/1+17*(-18)(64) (-13)/3/19/8(65) (-3)/(-13)/20*5(66) 3/12/(-18)-18(67) 5*(-19)/13+(-6)(68) 4+4*(-19)-11(69) (-2)+17-5+(-1)(70) 9+(-3)*19*(-19)(71) (-12)-(-6)+17/2(72) 15*(-5)-(-3)/5(73) (-10)*2/(-1)/4(74) (-8)*16/(-6)+4(75) 2-11+12+10(76) (-3)+(-20)*(-7)*(-9)(77) (-15)+8-17/7(78) (-14)*10+18*2(79) (-7)+2-(-17)*19(80) (-7)/18/1+1(81) 11/(-9)-(-16)/17(82) 15+5*6-(-8)(83) (-13)*(-18)+18/(-6)(84) 11-(-1)/11*(-6)(85) (-4)+(-12)+19/6(86) (-18)/(-1)/(-19)+2(87) 9*(-8)*(-6)/11(88) 20*(-3)*(-5)+1(89) (-18)-2+(-11)/20(90) 15*1+4*17(91) 1-10+(-14)/(-1)(92) 10+(-4)*(-19)+(-12)(93) 15/14/5*7(94) 8+(-13)/3+1(95) (-14)+6+(-2)*(-14)(96) (-5)/(-13)/4+7(97) (-15)/(-2)/(-12)+(-2)(98) (-17)-(-20)-20*(-10)(99) (-7)-10-13/3(100) (-20)+(-18)+11+9 答案：1 -182 103/63 -374 95 -436 -(20/3)7 -(199/9)8 54/79 1710 211 -8312 21613 1021/9114 27/715 -174116 7317 12718 -(2885/12)19 84220 521 21422 -4123 -(13/28)24 -(51/10)25 2426 -(268/39)27 39/528 -(372/19)29 15/1130 -(77/19)31 -(29/2)32 1716/1733 -(117/4)34 -1735 2536 285637 59/238 18439 -(731/4)40 587/341 23/442 -3743 4368044 -2245 -(118/7)46 -(192/17)47 145/2448 -1200049 -(3/4)50 -81951 7452 -2153 8954 20555 -10456 -(2/25)57 161/1958 -1352059 -5160 -4561 13762 -(133/3)63 -32164 -(13/456)65 3/5266 -(1297/72)67 -(173/13)68 -8369 970 109271 5/272 -(372/5)73 574 76/375 1376 -126377 -(66/7)78 -10479 31880 11/1881 -(43/153)82 5383 23184 115/1185 -(77/6)86 20/1987 432/1188 30189 -(411/20)90 8391 592 7493 3/294 14/395 2096 369/5297 -(21/8)98 20399 -(64/3) 100 -18
初一100道数学计算题及答案
1.25×（8+10） =1.25×8+1.25×10=10+12.5=22.5 9123-（123+8.8）=9123-123-8.8=9000-8.8=8991.2 1.24×8.3+8.3×1.76=8.3×（1.24+1.76)=8.3×3=24.9 9999×1001=9999×（1000+1）=9999×1000+9999×1=10008999 14.8×6.3-6.3×6.5＋8.3×3.7=（14.8-6.5）×6.3＋8.3×3.7=8.3×6.3+8.3×3.78.3×（6.3＋3.7）=8.3×10=83 1.24+0.78+8.76=（1.24+8.76）+0.78=10+0.78=10.78 933-157-43=933-（157+43）=933-200=733 4821-998=4821-1000+2=3823 I32×125×25=4×8×125×25=（4×25）×（8×125）=100×1000=100000 9048÷268=（2600+2600+2600+1248）÷26=2600÷26+2600÷26+2600÷26+1248÷269=100+100+100+48=348 2881÷ 43=（1290+1591）÷ 434=1290÷43+1591÷43=30+37 3.2×42.3×3.75-12.5×0.423×16=3.2×42.3×3.75-1.25×42.3×1.6=42.3×(3.2×3.75-1.25×1.6)=42.3×(4×0.8×3.75-1.25×4×0.4)=42.3×(4×0.4×2×3.75-1.25×4×0.4)=42.3×(4x0.4x7.5-1.25x4x0.4)=42.3×[4×0.4×(7.5-1.25)]=42.3×[4×0.4×6.25]=42.3×(4×2.5)=42371.8+18÷1.5-0.5×0.3=1.8+12-0.15=13.8-0.15=13.65 6.5×8+3.5×8-47=52+28-47=80-47 (80-9.8)×5分之2-1.32=70.2X2/5-1.32=28.08-1.32=26.76 8×7分之4÷[1÷(3.2-2.95)]=8×4/7÷[1÷0.25]=8×4/7÷4=8/7 2700×（506－499）÷900=2700×7÷900=18900÷900=21 33.02－（148.4－90.85）÷2.5=33.02－57.55÷2.5=33.02－23.02=10 （1÷1－1）÷5.1=（1－1）÷5.1=0÷5.1=0 18.1＋（3－0.299÷0.23）×1=18.1＋1.7×1=18.1＋1.7=19.8 [-18]+29+[-52]+60= 19 [-3]+[-2]+[-1]+0+1+2= -3 [-301]+125+301+[-75]= 50 [-1]+[-1/2]+3/4+[-1/4]= -1 [-7/2]+5/6+[-0.5]+4/5+19/6= 1.25 [-26.54]+[-6.14]+18.54+6.14= -8 1.125+[-17/5]+[-1/8]+[-0.6]= -3 [-98+76+(-87)]*23[56+(-75)-(7)]-(8+4+3)5+21*8/2-6-5968/21-8-11*8+61-2/9-7/9-564.6-(-3/4+1.6-4-3/4)1/2+3+5/6-7/12[2/3-4-1/4*(-0.4)]/1/3+222+(-4)+(-2)+4*3-2*8-8*1/2+8/1/8(2/3+1/2)/(-1/12)*(-12)(-28)/(-6+4)+(-1)2/(-2)+0/7-(-8)*(-2)(1/4-5/6+1/3+2/3)/1/218-6/(-3)*(-2)(5+3/8*8/30/(-2)-3(-84)/2*(-3)/(-6)1/2*(-4/15)/2/3-3x+2y-5x-7y1437×27＋27×563 〔75-（12+18）〕÷152160÷〔（83-79）×18〕 280＋840÷24×5325÷13×(266－250) 85×(95－1440÷24)58870÷(105＋20×2) 1437×27＋27×56381432÷(13×52＋78) [37.85-（7.85+6.4）] ×30156×[(17.7-7.2)÷3] （947－599）＋76×6436×(913－276÷23) [192－（54＋38）]×67[（7.1-5.6）×0.9-1.15]÷2.5 81432÷(13×52＋78)5.4÷[2.6×（3.7-2.9）+0.62] （947－599）＋76×64 60－(9.5＋28.9)]÷0.18 2.881÷0.43－0.24×3.5 20×[(2.44－1.8)÷0.4＋0.15] 28-(3.4 1.25×2.4) 0.8×〔15.5-(3.21 5.79)〕 （31.8 3.2×4）÷5 194－64.8÷1.8×0.9 36.72÷4.25×9.9 3.416÷（0.016×35） 0.8×[(10－6.76)÷1.2]（136+64）×（65-345÷23） (6.8-6.8×0.55)÷8.50.12× 4.8÷0.12×4.8 （58+37）÷（64-9×5）812-700÷（9+31×11） （3.2×1.5+2.5）÷1.685+14×（14+208÷26） 120-36×4÷18+35（284+16）×（512-8208÷18） 9.72×1.6-18.305÷7 4/7÷[1/3×（3/5-3/10）] （4/5+1/4）÷7/3+7/1012.78－0÷（ 13.4＋156.6 ） 37.812-700÷（9+31×11） （136+64）×（65-345÷23） 3.2×（1.5+2.5）÷1.685+14×（14+208÷26） （58+37）÷（64-9×5）(6.8-6.8×0.55)÷8.5 （284+16）×（512-8208÷18）0.12× 4.8÷0.12×4.8 （3.2×1.5+2.5）÷1.6120-36×4÷18+35 10.15-10.75×0.4-5.75.8×（3.87-0.13）+4.2×3.74 347+45×2-4160÷5232.52-（6+9.728÷3.2）×2.5 87（58+37）÷（64-9×5）[（7.1-5.6）×0.9-1.15] ÷2.5 （3.2×1.5+2.5）÷1.65.4÷[2.6×（3.7-2.9）+0.62] 12×6÷（12-7.2）-63.2×6+（1.5+2.5）÷1.6 （3.2×1.5+2.5）÷1.65.8×（3.87-0.13）+4.2×3.7433.02－（148.4－90.85）÷2.51)23+(-73)(2)(-84)+(-49)(3)7+(-2.04)(4)4.23+(-7.57)(5)(-7/3)+(-7/6)(6)9/4+(-3/2)(7)3.75+(2.25)+5/4(8)-3.75+(+5/4)+(-1.5)(9)(-17/4)+(-10/3)+(+13/3)+(11/3)(10)(-1.8)+(+0.2)+(-1.7)+(0.1)+(+1.8)+(+1.4)(11)(+1.3)-(+17/7)(12)(-2)-(+2/3)(13)|(-7.2)-(-6.3)+(1.1)|(14)|(-5/4)-(-3/4)|-|1-5/4-|-3/4|)(15)(-2/199)*(-7/6-3/2+8/3)(16)4a)*(-3b)*(5c)*1/61. 3/7 × 49/9 - 4/32. 8/9 × 15/36 + 1/273. 12× 5/6 – 2/9 ×34. 8× 5/4 + 1/45. 6÷ 3/8 – 3/8 ÷66. 4/7 × 5/9 + 3/7 × 5/97. 5/2 -（ 3/2 + 4/5 ）8. 7/8 + （ 1/8 + 1/9 ）9. 9 × 5/6 + 5/610. 3/4 × 8/9 - 1/3 0.12χ＋1.8×0.9=7.2 (9－5χ)×0.3=1.02 6.4χ-χ=28+4.4 11. 7 × 5/49 + 3/1412. 6 ×（ 1/2 + 2/3 ）13. 8 × 4/5 + 8 × 11/514. 31 × 5/6 – 5/6 15. 9/7 - （ 2/7 – 10/21 ）16. 5/9 × 18 – 14 × 2/717. 4/5 × 25/16 + 2/3 × 3/418. 14 × 8/7 – 5/6 × 12/1519. 17/32 – 3/4 × 9/2420. 3 × 2/9 + 1/321. 5/7 × 3/25 + 3/722. 3/14 ×× 2/3 + 1/623. 1/5 × 2/3 + 5/624. 9/22 + 1/11 ÷ 1/225. 5/3 × 11/5 + 4/326. 45 × 2/3 + 1/3 × 1527. 7/19 + 12/19 × 5/628. 1/4 + 3/4 ÷ 2/329. 8/7 × 21/16 + 1/230. 101 × 1/5 – 1/5 × 2131.50＋160÷40 （58+370）÷（64-45）32.120-144÷18+3533.347+45×2-4160÷5234（58+37）÷（64-9×5）35.95÷（64-45）36.178-145÷5×6+42 420+580-64×21÷2837.812-700÷（9+31×11） （136+64）×（65-345÷23）38.85+14×（14+208÷26）39.（284+16）×（512-8208÷18）40.120-36×4÷18+3541.（58+37）÷（64-9×5）42.(6.8-6.8×0.55)÷8.543.0.12× 4.8÷0.12×4.844.（3.2×1.5+2.5）÷1.6 （2）3.2×（1.5+2.5）÷1.645.6-1.6÷4= 5.38+7.85-5.37=46.7.2÷0.8-1.2×5= 6-1.19×3-0.43=47.6.5×（4.8-1.2×4）= 0.68×1.9+0.32×1.948.10.15-10.75×0.4-5.749.5.8×（3.87-0.13）+4.2×3.7450.32.52-（6+9.728÷3.2）×2.5 51.-5+58+13+90+78-(-56)+5052.-7*2-57/(353.(-7)*2/(1/3)+79/(3+6/4）54.123+456+789+98/(-4)55.369/33-(-54-31/15.5)56.39+{3x[42/2x(3x8)]}57.9x8x7/5x(4+6)58.11x22/(4+12/2)59.94+(-60)/10 1.a^3-2b^3+ab(2a-b)=a^3+2a^2b-2b^3-ab^2=a^2(a+2b)-b^2(2b+a)=(a+2b)(a^2-b^2)=(a+2b)(a+b)(a-b) 2.(x^2+y^2)^2-4y(x^2+y^2)+4y^2=(x^2+y^2-2y)^2 3.(x^2+2x)^2+3(x^2+2x)+x^2+2x+3=(x^2+2x)^2+4(x^2+2x)+3=(x^2+2x+3)(x^2+2x+1)=(x^2+2x+3)(x+1)^2 4.(a+1)(a+2)+(2a+1)(a-2)-12=a^2+3a+2+2a^2-3a-2-12=3a^2-12=3(a+2)(a-2) 5.x^2(y+z)^2-2xy(x-z)(y+z)+y^2(x-z)^2=[x(y+z)-y(x-z)]^2=(xz+yz)^2=z^2(x+y)^2 6.3(a+2)^2+28(a+2)-20=[3(a+2)-2][(a+2)+10]=(3a+4)(a+12) 7.(a+b)^2-(b-c)^2+a^2-c^2=(a+b)^2-c^2+a^2-(b-c)^2=(a+b+c)(a+b-c)+(a+b-c)(a-b+c)=(a+b-c)(a+b+c+a-b+c)=2(a+b-c)(a+c) 8.x(x+1)(x^2+x-1)-2=(x^2+x)(x^2+x-1)-2=(x^2+x)^2-(x^2+x)-2=(x^2+x-2)(x^2+x+1)=(x+2)(x-1)(x^2+x+1)1. 3/7 × 49/9 - 4/32. 8/9 × 15/36 + 1/273. 12× 5/6 – 2/9 ×34. 8× 5/4 + 1/45. 6÷ 3/8 – 3/8 ÷66. 4/7 × 5/9 + 3/7 × 5/97. 5/2 -（ 3/2 + 4/5 ）8. 7/8 + （ 1/8 + 1/9 ）9. 9 × 5/6 + 5/610. 3/4 × 8/9 - 1/3 0.12χ＋1.8×0.9=7.2 (9－5χ)×0.3=1.02 6.4χ-χ=28+4.4 11. 7 × 5/49 + 3/1412. 6 ×（ 1/2 + 2/3 ）13. 8 × 4/5 + 8 × 11/514. 31 × 5/6 – 5/615. 9/7 - （ 2/7 – 10/21 ）16. 5/9 × 18 – 14 × 2/717. 4/5 × 25/16 + 2/3 × 3/418. 14 × 8/7 – 5/6 × 12/1519. 17/32 – 3/4 × 9/2420. 3 × 2/9 + 1/321. 5/7 × 3/25 + 3/722. 3/14 ×× 2/3 + 1/623. 1/5 × 2/3 + 5/624. 9/22 + 1/11 ÷ 1/225. 5/3 × 11/5 + 4/326. 45 × 2/3 + 1/3 × 1527. 7/19 + 12/19 × 5/628. 1/4 + 3/4 ÷ 2/329. 8/7 × 21/16 + 1/230. 101 × 1/5 – 1/5 × 2131.50＋160÷40 （58+370）÷（64-45）32.120-144÷18+3533.347+45×2-4160÷5234（58+37）÷（64-9×5）35.95÷（64-45）36.178-145÷5×6+42 420+580-64×21÷2837.812-700÷（9+31×11） （136+64）×（65-345÷23）38.85+14×（14+208÷26）39.（284+16）×（512-8208÷18）40.120-36×4÷18+3541.（58+37）÷（64-9×5）42.(6.8-6.8×0.55)÷8.543.0.12× 4.8÷0.12×4.844.（3.2×1.5+2.5）÷1.6 （2）3.2×（1.5+2.5）÷1.645.6-1.6÷4= 5.38+7.85-5.37=46.7.2÷0.8-1.2×5= 6-1.19×3-0.43=47.6.5×（4.8-1.2×4）= 0.68×1.9+0.32×1.948.10.15-10.75×0.4-5.749.5.8×（3.87-0.13）+4.2×3.7450.32.52-（6+9.728÷3.2）×2.5 51.-5+58+13+90+78-(-56)+5052.-7*2-57/(353.(-7)*2/(1/3)+79/(3+6/4）54.123+456+789+98/(-4)55.369/33-(-54-31/15.5)56.39+{3x[42/2x(3x8)]}57.9x8x7/5x(4+6)58.11x22/(4+12/2)59.94+(-60)/10 1.a^3-2b^3+ab(2a-b)=a^3+2a^2b-2b^3-ab^2=a^2(a+2b)-b^2(2b+a)=(a+2b)(a^2-b^2)=(a+2b)(a+b)(a-b) 2.(x^2+y^2)^2-4y(x^2+y^2)+4y^2=(x^2+y^2-2y)^2 3.(x^2+2x)^2+3(x^2+2x)+x^2+2x+3=(x^2+2x)^2+4(x^2+2x)+3=(x^2+2x+3)(x^2+2x+1)=(x^2+2x+3)(x+1)^2 4.(a+1)(a+2)+(2a+1)(a-2)-12=a^2+3a+2+2a^2-3a-2-12=3a^2-12=3(a+2)(a-2) 5.x^2(y+z)^2-2xy(x-z)(y+z)+y^2(x-z)^2=[x(y+z)-y(x-z)]^2=(xz+yz)^2=z^2(x+y)^2 6.3(a+2)^2+28(a+2)-20=[3(a+2)-2][(a+2)+10]=(3a+4)(a+12) 7.(a+b)^2-(b-c)^2+a^2-c^2=(a+b)^2-c^2+a^2-(b-c)^2=(a+b+c)(a+b-c)+(a+b-c)(a-b+c)=(a+b-c)(a+b+c+a-b+c)=2(a+b-c)(a+c) 8.x(x+1)(x^2+x-1)-2=(x^2+x)(x^2+x-1)-2=(x^2+x)^2-(x^2+x)-2=(x^2+x-2)(x^2+x+1) =(x+2)(x-1)(x^2+x+1)
2x+17=35 3x-64=1112+8x=520.8x-4.2=2.22x+5=103x-15=754x+4o=3203x+77=1225x-1.6=0.66x-4=2010x-0.6=2.4500-12x=1401) 66x+17y=396725x+y=1200答案：x=48 y=47(2) 18x+23y=230374x-y=1998答案：x=27 y=79(3) 44x+90y=779644x+y=3476答案：x=79 y=48(4) 76x-66y=408230x-y=2940答案：x=98 y=51(5) 67x+54y=854671x-y=5680答案：x=80 y=59(6) 42x-95y=-141021x-y=1575答案：x=75 y=48(7) 47x-40y=85334x-y=2006答案：x=59 y=48(8) 19x-32y=-178675x+y=4950答案：x=66 y=95(9) 97x+24y=720258x-y=2900答案：x=50 y=98(10) 42x+85y=636263x-y=1638答案：x=26 y=62(11) 85x-92y=-251827x-y=486答案：x=18 y=44(12) 79x+40y=241956x-y=1176答案：x=21 y=19(13) 80x-87y=215622x-y=880答案：x=40 y=12(14) 32x+62y=513457x+y=2850答案：x=50 y=57(15) 83x-49y=8259x+y=2183答案：x=37 y=61(16) 91x+70y=584595x-y=4275答案：x=45 y=25(17) 29x+44y=528188x-y=3608答案：x=41 y=93(18) 25x-95y=-435540x-y=2000答案：x=50 y=59(19) 54x+68y=328478x+y=1404答案：x=18 y=34(20) 70x+13y=352052x+y=2132答案：x=41 y=50(21) 48x-54y=-318624x+y=1080答案：x=45 y=99(22) 36x+77y=761947x-y=799答案：x=17 y=91(23) 13x-42y=-271731x-y=1333答案：x=43 y=78(24) 28x+28y=333252x-y=4628答案：x=89 y=30(25) 62x-98y=-256446x-y=2024答案：x=44 y=54(26) 79x-76y=-438826x-y=832答案：x=32 y=91(27) 63x-40y=-82142x-y=546答案：x=13 y=41(28) 69x-96y=-120942x+y=3822答案：x=91 y=78(29) 85x+67y=733811x+y=308答案：x=28 y=74(30) 78x+74y=1292814x+y=1218答案：x=87 y=83(31) 39x+42y=533159x-y=5841答案：x=99 y=35(32) 29x+18y=191658x+y=2320答案：x=40 y=42(33) 40x+31y=604345x-y=3555答案：x=79 y=93(34) 47x+50y=859845x+y=3780答案：x=84 y=93(35) 45x-30y=-145529x-y=725答案：x=25 y=86(36) 11x-43y=-136147x+y=799答案：x=17 y=36(37) 33x+59y=325494x+y=1034答案：x=11 y=49(38) 89x-74y=-273568x+y=1020答案：x=15 y=55(39) 94x+71y=751778x+y=3822答案：x=49 y=41(40) 28x-62y=-493446x+y=552答案：x=12 y=85(41) 75x+43y=847217x-y=1394答案：x=82 y=54(42) 41x-38y=-118029x+y=1450答案：x=50 y=85(43) 22x-59y=82463x+y=4725答案：x=75 y=14(44) 95x-56y=-40190x+y=1530答案：x=17 y=36(45) 93x-52y=-85229x+y=464答案：x=16 y=45(46) 93x+12y=882354x+y=4914答案：x=91 y=30(47) 21x-63y=8420x+y=1880答案：x=94 y=30(48) 48x+93y=975638x-y=950答案：x=25 y=92(49) 99x-67y=401175x-y=5475答案：x=73 y=48(50) 83x+64y=929190x-y=3690答案：x=41 y=923X+18=52 x=34/34Y+11=22 y=11/43X*9=5 x=5/278Z/6=48 z=363X+7=59 x=52/34Y-69=81 y=75/48X*6=5 x=5/487Z/9=4 y=63/715X+8-5X=54 x=4.65Y*5=27 y=27/408x+2=10 x=1x*8=88 x=11y-90=1 y=912x-98=2 x=506x*6=12 x=1/35-6=5x x=-1/56*x=42 x=755-y=33 y=2211*3x=60 x=20/118-y=2 y=-61.x+2=32.x+32=333.x+6=184.4+x=475.19-x=86.98-x=137.66-x=108.5x=109.3x=2710.7x=711.8x=812.9x=913.10x=10014.66x=66015.7x=4916.2x=417.3x=918.4x=1619.5x=2520.6x=3621.8x=6422.9x=8123.10x=10024.11x=12125.12x=14426.13x=16927.14x=19628.15x=22529.16x=25630.17x=28931.18x=32432.19x=36133.20x=40031.21x=44132.22x=48433.111x=1232134.1111x=123432135.11111x=12345432136.111111x=1234565432137.46/x=2338.64/x=839.99/x=1140.1235467564x=041.2x+1= -2+x42.4x-3(20-x)=343.．-2(x-1)=444.3X+189=52145.4Y+119=22 546.3X+77=5947.4Y-6985=8148.X=0.149.5X=55.5 50.Y=50-85
题目呢 = =
2x+17=35 3x-64=1112+8x=520.8x-4.2=2.22x+5=103x-15=754x+4o=3203x+77=1225x-1.6=0.66x-4=2010x-0.6=2.4500-12x=1401) 66x+17y=396725x+y=1200答案：x=48 y=47(2) 18x+23y=230374x-y=1998答案：x=27 y=79(3) 44x+90y=779644x+y=3476答案：x=79 y=48(4) 76x-66y=408230x-y=2940答案：x=98 y=51(5) 67x+54y=854671x-y=5680答案：x=80 y=59(6) 42x-95y=-141021x-y=1575答案：x=75 y=48(7) 47x-40y=85334x-y=2006答案：x=59 y=48(8) 19x-32y=-178675x+y=4950答案：x=66 y=95(9) 97x+24y=720258x-y=2900答案：x=50 y=98(10) 42x+85y=636263x-y=1638答案：x=26 y=62(11) 85x-92y=-251827x-y=486答案：x=18 y=44(12) 79x+40y=241956x-y=1176答案：x=21 y=19(13) 80x-87y=215622x-y=880答案：x=40 y=12(14) 32x+62y=513457x+y=2850答案：x=50 y=57(15) 83x-49y=8259x+y=2183答案：x=37 y=61(16) 91x+70y=584595x-y=4275答案：x=45 y=25(17) 29x+44y=528188x-y=3608答案：x=41 y=93(18) 25x-95y=-435540x-y=2000答案：x=50 y=59(19) 54x+68y=328478x+y=1404答案：x=18 y=34(20) 70x+13y=352052x+y=2132答案：x=41 y=50(21) 48x-54y=-318624x+y=1080答案：x=45 y=99(22) 36x+77y=761947x-y=799答案：x=17 y=91(23) 13x-42y=-271731x-y=1333答案：x=43 y=78(24) 28x+28y=333252x-y=4628答案：x=89 y=30(25) 62x-98y=-256446x-y=2024答案：x=44 y=54(26) 79x-76y=-438826x-y=832答案：x=32 y=91(27) 63x-40y=-82142x-y=546答案：x=13 y=41(28) 69x-96y=-120942x+y=3822答案：x=91 y=78(29) 85x+67y=733811x+y=308答案：x=28 y=74(30) 78x+74y=1292814x+y=1218答案：x=87 y=83(31) 39x+42y=533159x-y=5841答案：x=99 y=35(32) 29x+18y=191658x+y=2320答案：x=40 y=42(33) 40x+31y=604345x-y=3555答案：x=79 y=93(34) 47x+50y=859845x+y=3780答案：x=84 y=93(35) 45x-30y=-145529x-y=725答案：x=25 y=86(36) 11x-43y=-136147x+y=799答案：x=17 y=36(37) 33x+59y=325494x+y=1034答案：x=11 y=49(38) 89x-74y=-273568x+y=1020答案：x=15 y=55(39) 94x+71y=751778x+y=3822答案：x=49 y=41(40) 28x-62y=-493446x+y=552答案：x=12 y=85(41) 75x+43y=847217x-y=1394答案：x=82 y=54(42) 41x-38y=-118029x+y=1450答案：x=50 y=85(43) 22x-59y=82463x+y=4725答案：x=75 y=14(44) 95x-56y=-40190x+y=1530答案：x=17 y=36(45) 93x-52y=-85229x+y=464答案：x=16 y=45(46) 93x+12y=882354x+y=4914答案：x=91 y=30(47) 21x-63y=8420x+y=1880答案：x=94 y=30(48) 48x+93y=975638x-y=950答案：x=25 y=92(49) 99x-67y=401175x-y=5475答案：x=73 y=48(50) 83x+64y=929190x-y=3690答案：x=41 y=923X+18=52 x=34/34Y+11=22 y=11/43X*9=5 x=5/278Z/6=48 z=363X+7=59 x=52/34Y-69=81 y=75/48X*6=5 x=5/487Z/9=4 y=63/715X+8-5X=54 x=4.65Y*5=27 y=27/408x+2=10 x=1x*8=88 x=11y-90=1 y=912x-98=2 x=506x*6=12 x=1/35-6=5x x=-1/56*x=42 x=755-y=33 y=2211*3x=60 x=20/118-y=2 y=-61.x+2=32.x+32=333.x+6=184.4+x=475.19-x=86.98-x=137.66-x=108.5x=109.3x=2710.7x=711.8x=812.9x=913.10x=10014.66x=66015.7x=4916.2x=417.3x=918.4x=1619.5x=2520.6x=3621.8x=6422.9x=8123.10x=10024.11x=12125.12x=14426.13x=16927.14x=19628.15x=22529.16x=25630.17x=28931.18x=32432.19x=36133.20x=40031.21x=44132.22x=48433.111x=1232134.1111x=123432135.11111x=12345432136.111111x=1234565432137.46/x=2338.64/x=839.99/x=1140.1235467564x=041.2x+1= -2+x42.4x-3(20-x)=343.．-2(x-1)=444.3X+189=52145.4Y+119=22 546.3X+77=5947.4Y-6985=8148.X=0.149.5X=55.5 50.Y=50-85
题目呢 = =
七年级数学计算题大全
计算题是七年级数学学习的重要内容,其不仅仅关系到基础数学计算能力的培养,还牵涉到实践能力和创新能力的全面培养。下面是我为大家精心整理的七年级数学的计算题大全，仅供参考。七年级数学计算题第1页七年级数学计算题第2页七年级数学计算题第3页七年级数学计算题第4页七年级数学计算题第5页 七年级数学计算题大全_初一数学计算题相关文章： ★七年级数学计算题大全 ★七年级数学计算题100道 ★七年级数学上册计算题大全 ★七年级数学计算题练习 ★初一数学整式练习题及答案 ★初中七年级数学计算题 ★七年级数学上册有理数加减法的计算题 ★七年级数学有理数的乘方计算题 ★初一数学上册应用题带答案 ★七年级数学的公式
