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初一100道数学计算题及答案

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×(8+10 =×8+×10 =10+= 9123-123+ = = = ×+× =×(+ =×3= 9999×1001 =9999×(1000+1 =9999×1000+9999×1 = × =()×+× =×+× ×(+) =×10 =83 ++ =++ =10+ =
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 ×× =×× =×× =×(4×× =×(4××2× =× =×[4×× =×[4××] =×(4×

=4237 +18÷ =+ = = ×8+×8-47 =52+28-47 =80-47 ×5分之 = = = 8×7分之4÷[1÷ =8×4/7÷[1÷] =8×4/7÷4 =8/7 2700×(506499)÷900 =2700×7÷900 =18900÷900 =21 -(-)÷ =-÷ = =10 1÷11)÷ =11)÷ =0÷


=0 +(3-÷)×1 =+×1 = = [-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+[]+4/5+19/6= []+[]++= -8
+[-17/5]+[-1/8]+[]= -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 (-3/4+4 1/2+3+5/6-7/12 [2/3-4-1/4*]/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 [+] ×30 156×[ 947599)+76×64
36×(913276÷23 [192-(5438]×67 [()× 81432÷(13×5278
÷[×()+] 94759976×64 60-+]÷ ÷-× 20×[-÷+] 28- × × ×4)÷5 194-÷× ÷× ÷(×35 ×[(10-÷] 136+64)×(65-345÷23 × ÷× 58+37)÷(64-9×5 812-700÷(9+31×11 (×+)÷ 85+14×(14+208÷26 120-36×4÷18+35 284+16)×(512-8208÷18 ×
4/7÷[1/3×(3/5-3/10] 4/5+1/4)÷7/3+7/10
0÷( ÷(9+31×11 136+64)×(65-345÷23 ×(+)÷ 85+14×(14+208÷26 58+37)÷(64-9×5 284+16)×(512-8208÷18 × ÷× (×+)÷ 120-36×4÷18+35
×()+× 347+45×2-4160÷52 6+÷)× 8758+37)÷(64-9×5 [()× ÷ (×+)÷


÷[×()+] 12×6÷()-6 ×6++)÷ (×+)÷ ×()+× -(-)÷ 123+(-73 (2(-84+(-49 (37+ (4+
(5(-7/3+(-7/6 (69/4+(-3/2 (7++5/4 (8+(+5/4+
(9(-17/4+(-10/3+(+13/3+(11/3 (10+(++++(++(+ (11(+-(+17/7 (12(-2-(+2/3 (13|-+|
(14|(-5/4-(-3/4|-|1-5/4-|-3/4| (15(-2/199*(-7/6-3/2+8/3 (164a*(-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
χ+×= (95χ×= χ-χ=28+ 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 × 21 160÷40 58+370)÷(64-45 ÷18+35 +45×2-4160÷52

3458+37)÷(64-9×5 ÷(64-45
÷5×6+42 420+580-64×21÷28
÷(9+31×11 136+64)×(65-345÷23 +14×(14+208÷26
39.284+16)×(512-8208÷18 ×4÷18+35
41.58+37)÷(64-9×5 42. ÷×
44.(×+)÷ 2)×(+)÷ + ×= ()= ×+× ()+× 6+÷)×
+58+13+90+78-(-56+50 *2-57/(3
53.(-7*2/(1/3+79/(3+6/4 +456+789+98/(-4 33-(-54-31/ +{3x[42/2x(3x8]} 5x(4+6 (4+12/2 +(-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
χ+×= (95χ×= χ-χ=28+ 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 × 21 160÷40 58+370)÷(64-45 ÷18+35 +45×2-4160÷52
3458+37)÷(64-9×5 ÷(64-45
÷5×6+42 420+580-64×21÷28
÷(9+31×11 136+64)×(65-345÷23 +14×(14+208÷26
39.284+16)×(512-8208÷18 ×4÷18+35
41.58+37)÷(64-9×5


42. ÷×
44.(×+)÷ 2)×(+)÷ + ×= ()= ×+× ()+× 6+÷)×
+58+13+90+78-(-56+50 *2-57/(3
53.(-7*2/(1/3+79/(3+6/4 +456+789+98/(-4 33-(-54-31/ +{3x[42/2x(3x8]} 5x(4+6 (4+12/2 +(-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

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