初一道数学计算题及答案

Document serial number【NL89WT-NY98YT-NC8CB-NNUUT-NUT108】 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

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+8.3×3.7

8.3×（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×

=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×（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*8/2-6-59

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

1437×27＋27×563〔75-（12+18）〕÷15

2160÷〔（83-79）×18〕280＋840÷24×5

325÷13×(266－250)85×(95－1440÷24)

58870÷(105＋20×2)1437×27＋27×563

81432÷(13×52＋78)[37.85-（7.85+6.4）]×30

156×[(17.7-7.2)÷3]（947－599）＋76×64

36×(913－276÷23)[192－（54＋38）]×67

[（7.1-5.6）×0.9-1.15]÷2.581432÷(13×52＋78)

5.4÷[2.6×（3.7-2.9）+0.62]（947－599）＋76×6460－(9.5＋28.9)]÷0.182.881÷0.43－0.24×3.520×[(2.44－1.8)÷0.4＋0.15]28-(3.41.25×2.4)0.8×〔15.5-(3.215.79)〕（31.83.2×4）÷5194－64.8÷1.8×0.936.72÷4.25×9.93.416÷（0.016×35）0.8×[(10－6.76)÷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

12.78－0÷（13.4＋156.6）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+3510.15-10.75×0.4-5.7

5.8×（3.87-0.13）+4.2×3.74347+45×2-4160÷52

32.52-（6+9.728÷3.2）×2.587（58+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－（148.4－90.85）÷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(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