初一100道数学计算题及答案

发布时间:2019-03-06 17:15:51

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 
14.8×6.3-6.3×6.58.3×3.7 
=14.8-6.5)×6.38.3×3.7
=8.3×6.3+8.3×3.7 
8.3×(6.33.7 
=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)
=4237 
1.8+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×(506499)÷900 
=2700×7÷900 
=18900÷900 
=21 
33.02-(148.490.85)÷2.5
=33.0257.55÷2.5
=33.0223.02 
=10
1÷11)÷5.1 
=11)÷5.1 
=0÷5.1 
=0
18.1+(30.299÷0.23)×1
=18.11.7×1 
=18.11.7 
=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*8/2-6-59 
68/21-8-11*8+61 
-2/9-7/9-56 
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+2 
22+(-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)/1/2 
18-6/(-3)*(-2) 
(5+3/8*8/30/(-2)-3 
(-84)/2*(-3)/(-6) 
1/2*(-4/15)/2/3 
-3x+2y-5x-7y
1437×2727×563 75-12+18)〕÷15 
2160÷〔(83-79)×18 280840÷24×5 
325÷13×(266250) 85×(951440÷24) 
58870÷(10520×2) 1437×2727×563 
81432÷(13×5278) [37.85-7.85+6.4] ×30 
156×[(17.7-7.2)÷3] 947599)+76×64 
36×(913276÷23) [192-(5438]×67 
[7.1-5.6)×0.9-1.15]÷2.5 81432÷(13×5278) 
5.4÷[2.6×(3.7-2.9+0.62] 947599)+76×64 60(9.528.9)]÷0.18 2.881÷0.430.24×3.5 20×[(2.441.8)÷0.40.15] 28-(3.4 1.25×2.4) 0.8×〔15.5-(3.21 5.79)〕(31.8 3.2×4)÷5 19464.8÷1.8×0.9 36.72÷4.25×9.9 3.416÷(0.016×35 0.8×[(106.76)÷1.2] 
136+64)×(65-345÷23 (6.8-6.8×0.55)÷8.5 
0.12× 4.8÷0.12×4.8 58+37)÷(64-9×5 
812-700÷(9+31×11)(3.2×1.5+2.5)÷1.6 
85+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+7/10 
12.780÷( 13.4156.6 37.812-700÷(9+31×11)(136+64)×(65-345÷23 3.2×(1.5+2.5)÷1.6 
85+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)÷1.6 
120-36×4÷18+35 10.15-10.75×0.4-5.7 
5.8×(3.87-0.13+4.2×3.74 347+45×2-4160÷52 
32.52-6+9.728÷3.2)×2.5 8758+37)÷(64-9×5 
[7.1-5.6)×0.9-1.15] ÷2.5 3.2×1.5+2.5)÷1.6 
5.4÷[2.6×(3.7-2.9+0.62] 12×6÷(12-7.2-6 
3.2×6+1.5+2.5)÷1.6 3.2×1.5+2.5)÷1.6 
5.8×(3.87-0.13+4.2×3.74 
33.02-(148.490.85)÷2.5
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. 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 (95χ)×0.3=1.02 6.4χ-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 
31.50160÷40 58+370)÷(64-45 
32.120-144÷18+35 
33.347+45×2-4160÷52 
3458+37)÷(64-9×5 
35.95÷(64-45 
36.178-145÷5×6+42 420+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 23.2×(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) 
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 (95χ)×0.3=1.02 6.4χ-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 
31.50160÷40 58+370)÷(64-45 
32.120-144÷18+35 
33.347+45×2-4160÷52 
3458+37)÷(64-9×5 
35.95÷(64-45 
36.178-145÷5×6+42 420+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 23.2×(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)

初一100道数学计算题及答案

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