初一数学计算题200道RT最好是带答案的少点也无所谓有就可以了。
2019-04-15
初一数学计算题200道RT最好是带答案的少点也无所谓有就可以了。
优质解答
1-1/3[x-(1+x)/3]=x/2-1/2[2x-(10-7x)/3] 1-1/3[x-1/3+x/3]=x/2-1/2[2x-10/3+7x/3] 1-1/3[4x/3-1/3]=x/2-1/2[13x/3-10/3] 1-4x/9-1/9=x/2-13x/6+10/6 4x/9-x/2+13/6=10/6-4-1/9 8x/18-9x/18+39x/18=30/18-18/18-2/18 38x/18=18/10 x=10/18÷38/18 x=10/18×18/38 x=5/19 (5x2-2x+3)+(3x2+5x+2) x2y+2xy2 –y3+3xy2 –4x2y-x3 3ab-4ab+8ab-7ab+ab=______. 7x-(5x-5y)-y=______. 23a3bc2-15ab2c+8abc-24a3bc2-8abc=______. -7x2+6x+13x2-4x-5x2=______. 2y+(-2y+5)-(3y+2)=______. 1.3/7×49/9-4/3 2.8/9×15/36+1/27 3.12×5/6–2/9×3 4.8×5/4+1/4 5.6÷3/8–3/8÷6 6.4/7×5/9+3/7×5/9 7.5/2-(3/2+4/5) 8.7/8+(1/8+1/9) 9.9×5/6+5/6 10.3/4×8/9-1/3 0.12χ+1.8×0.9=7.2(9-5χ)×0.3=1.026.4χ-χ=28+4.4 11.7×5/49+3/14 12.6×(1/2+2/3) 13.8×4/5+8×11/5 14.31×5/6–5/6 15.9/7-(2/7–10/21) 16.5/9×18–14×2/7 17.4/5×25/16+2/3×3/4 18.14×8/7–5/6×12/15 19.17/32–3/4×9/24 20.3×2/9+1/3 21.5/7×3/25+3/7 22.3/14××2/3+1/6 23.1/5×2/3+5/6 24.9/22+1/11÷1/2 25.5/3×11/5+4/3 26.45×2/3+1/3×15 27.7/19+12/19×5/6 28.1/4+3/4÷2/3 29.8/7×21/16+1/2 30.101×1/5–1/5×21 31.50+160÷40(58+370)÷(64-45) 32.120-144÷18+35 33.347+45×2-4160÷52 34(58+37)÷(64-9×5) 35.95÷(64-45) 36.178-145÷5×6+42420+580-64×21÷28 37.812-700÷(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+35 41.(58+37)÷(64-9×5) 42.(6.8-6.8×0.55)÷8.5 43.0.12×4.8÷0.12×4.8 44.(3.2×1.5+2.5)÷1.6(2)3.2×(1.5+2.5)÷1.6 45.6-1.6÷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+0.32×1.9 48.10.15-10.75×0.4-5.7 49.5.8×(3.87-0.13)+4.2×3.74 50.32.52-(6+9.728÷3.2)×2.5 51.-5+58+13+90+78-(-56)+50 52.-7*2-57/(3 53.(-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)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)*1/6 1)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)*1/6 还有50道题,不过没有答案 1.3/7×49/9-4/3 2.8/9×15/36+1/27 3.12×5/6–2/9×3 4.8×5/4+1/4 5.6÷3/8–3/8÷6 6.4/7×5/9+3/7×5/9 7.5/2-(3/2+4/5) 8.7/8+(1/8+1/9) 9.9×5/6+5/6 10.3/4×8/9-1/3 0.12χ+1.8×0.9=7.2(9-5χ)×0.3=1.026.4χ-χ=28+4.4 11.7×5/49+3/14 12.6×(1/2+2/3) 13.8×4/5+8×11/5 14.31×5/6–5/6 15.9/7-(2/7–10/21) 16.5/9×18–14×2/7 17.4/5×25/16+2/3×3/4 18.14×8/7–5/6×12/15 19.17/32–3/4×9/24 20.3×2/9+1/3 21.5/7×3/25+3/7 22.3/14××2/3+1/6 23.1/5×2/3+5/6 24.9/22+1/11÷1/2 25.5/3×11/5+4/3 26.45×2/3+1/3×15 27.7/19+12/19×5/6 28.1/4+3/4÷2/3 29.8/7×21/16+1/2 30.101×1/5–1/5×21 31.50+160÷40(58+370)÷(64-45) 32.120-144÷18+35 33.347+45×2-4160÷52 34(58+37)÷(64-9×5) 35.95÷(64-45) 36.178-145÷5×6+42420+580-64×21÷28 37.812-700÷(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+35 41.(58+37)÷(64-9×5) 42.(6.8-6.8×0.55)÷8.5 43.0.12×4.8÷0.12×4.8 44.(3.2×1.5+2.5)÷1.6(2)3.2×(1.5+2.5)÷1.6 45.6-1.6÷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+0.32×1.9 48.10.15-10.75×0.4-5.7 49.5.8×(3.87-0.13)+4.2×3.74 50.32.52-(6+9.728÷3.2)×2.5 51.-5+58+13+90+78-(-56)+50 52.-7*2-57/(3 53.(-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) 9x^2(x-1)^2-3(x^2-x)-56 =9x^2(x-1)^2-3x(x-1)-56 =[3x(x-1)-8][3x(x-1)+7] =(3x^2-3x-8)(3x^2-3x+7)
1-1/3[x-(1+x)/3]=x/2-1/2[2x-(10-7x)/3] 1-1/3[x-1/3+x/3]=x/2-1/2[2x-10/3+7x/3] 1-1/3[4x/3-1/3]=x/2-1/2[13x/3-10/3] 1-4x/9-1/9=x/2-13x/6+10/6 4x/9-x/2+13/6=10/6-4-1/9 8x/18-9x/18+39x/18=30/18-18/18-2/18 38x/18=18/10 x=10/18÷38/18 x=10/18×18/38 x=5/19 (5x2-2x+3)+(3x2+5x+2) x2y+2xy2 –y3+3xy2 –4x2y-x3 3ab-4ab+8ab-7ab+ab=______. 7x-(5x-5y)-y=______. 23a3bc2-15ab2c+8abc-24a3bc2-8abc=______. -7x2+6x+13x2-4x-5x2=______. 2y+(-2y+5)-(3y+2)=______. 1.3/7×49/9-4/3 2.8/9×15/36+1/27 3.12×5/6–2/9×3 4.8×5/4+1/4 5.6÷3/8–3/8÷6 6.4/7×5/9+3/7×5/9 7.5/2-(3/2+4/5) 8.7/8+(1/8+1/9) 9.9×5/6+5/6 10.3/4×8/9-1/3 0.12χ+1.8×0.9=7.2(9-5χ)×0.3=1.026.4χ-χ=28+4.4 11.7×5/49+3/14 12.6×(1/2+2/3) 13.8×4/5+8×11/5 14.31×5/6–5/6 15.9/7-(2/7–10/21) 16.5/9×18–14×2/7 17.4/5×25/16+2/3×3/4 18.14×8/7–5/6×12/15 19.17/32–3/4×9/24 20.3×2/9+1/3 21.5/7×3/25+3/7 22.3/14××2/3+1/6 23.1/5×2/3+5/6 24.9/22+1/11÷1/2 25.5/3×11/5+4/3 26.45×2/3+1/3×15 27.7/19+12/19×5/6 28.1/4+3/4÷2/3 29.8/7×21/16+1/2 30.101×1/5–1/5×21 31.50+160÷40(58+370)÷(64-45) 32.120-144÷18+35 33.347+45×2-4160÷52 34(58+37)÷(64-9×5) 35.95÷(64-45) 36.178-145÷5×6+42420+580-64×21÷28 37.812-700÷(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+35 41.(58+37)÷(64-9×5) 42.(6.8-6.8×0.55)÷8.5 43.0.12×4.8÷0.12×4.8 44.(3.2×1.5+2.5)÷1.6(2)3.2×(1.5+2.5)÷1.6 45.6-1.6÷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+0.32×1.9 48.10.15-10.75×0.4-5.7 49.5.8×(3.87-0.13)+4.2×3.74 50.32.52-(6+9.728÷3.2)×2.5 51.-5+58+13+90+78-(-56)+50 52.-7*2-57/(3 53.(-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)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)*1/6 1)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)*1/6 还有50道题,不过没有答案 1.3/7×49/9-4/3 2.8/9×15/36+1/27 3.12×5/6–2/9×3 4.8×5/4+1/4 5.6÷3/8–3/8÷6 6.4/7×5/9+3/7×5/9 7.5/2-(3/2+4/5) 8.7/8+(1/8+1/9) 9.9×5/6+5/6 10.3/4×8/9-1/3 0.12χ+1.8×0.9=7.2(9-5χ)×0.3=1.026.4χ-χ=28+4.4 11.7×5/49+3/14 12.6×(1/2+2/3) 13.8×4/5+8×11/5 14.31×5/6–5/6 15.9/7-(2/7–10/21) 16.5/9×18–14×2/7 17.4/5×25/16+2/3×3/4 18.14×8/7–5/6×12/15 19.17/32–3/4×9/24 20.3×2/9+1/3 21.5/7×3/25+3/7 22.3/14××2/3+1/6 23.1/5×2/3+5/6 24.9/22+1/11÷1/2 25.5/3×11/5+4/3 26.45×2/3+1/3×15 27.7/19+12/19×5/6 28.1/4+3/4÷2/3 29.8/7×21/16+1/2 30.101×1/5–1/5×21 31.50+160÷40(58+370)÷(64-45) 32.120-144÷18+35 33.347+45×2-4160÷52 34(58+37)÷(64-9×5) 35.95÷(64-45) 36.178-145÷5×6+42420+580-64×21÷28 37.812-700÷(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+35 41.(58+37)÷(64-9×5) 42.(6.8-6.8×0.55)÷8.5 43.0.12×4.8÷0.12×4.8 44.(3.2×1.5+2.5)÷1.6(2)3.2×(1.5+2.5)÷1.6 45.6-1.6÷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+0.32×1.9 48.10.15-10.75×0.4-5.7 49.5.8×(3.87-0.13)+4.2×3.74 50.32.52-(6+9.728÷3.2)×2.5 51.-5+58+13+90+78-(-56)+50 52.-7*2-57/(3 53.(-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) 9x^2(x-1)^2-3(x^2-x)-56 =9x^2(x-1)^2-3x(x-1)-56 =[3x(x-1)-8][3x(x-1)+7] =(3x^2-3x-8)(3x^2-3x+7)