五年级关于小数乘法的简便计算50题

2024-11-17 16:50:11
推荐回答(5个)
回答1:

五年级数学简便计算练习卷
下面各题怎样算简便就怎样算。
(1)小数加减法计算
6.9+4.8+3.1 0.456+6.22+3.78 15.89+(6.75-5.89)

4.02+5.4+0.98 5.17-1.8-3.2 13.75-(3.75+6.48)

3.68+7.56-2.68 7.85+2.34-0.85+4.66 35.6-1.8-15.6-7.2

3.82+2.9+0.18+9.1 9.6+4.8-3.6 7.14-0.53-2.47

5.27+2.86-0.66+1.63 13.35-4.68+2.65 73.8-1.64-13.8-5.36

47.8-7.45+8.8 0.398+0.36+3.64 15.75+3.59-0.59+14.25

66.86-8.66-1.34 36.8-3.9-6.1 32+4.9-0.9

25.48-(9.4-0.52) 3.9-4.1+6.1-5.9 15.02-6.8-1.02

32+4.9-0.9 146.5-(23+46.5) 9.43-(6.28-1.57)

4.8+8.63+5.2+0.37 5.93+0.19+2.81 1.76+0.195+3.24

2.35+1.713+0.287+7.65 1.57+0.245+7.43 6.02+3.6+1.98

0.134+2.66+0.866 1.27+3.9+0.73+16.1 7.5+4.9-6.5

3.07-0.38-1.62 1.29+3.7+2.71+6.3 8-2.45-1.55

3.25+1.79-0.59+1.75 23.4-0.8-13.4-7.2 3.2+0.36+4.8+1.64

1.23+3.4-0.23+6.6 12.7-(3.7+0.84) 36.54-1.76-4.54
14-7.32-2.68 2.64+8.67+7.36+11.33

(2)小数乘法计算
0.25×16.2×4 (1.25-0.125)×8 3.6×102 320÷1.25÷8

3.72×3.5+6.28×3.5 1 4.8×7.8+78×0.52 0.8×100.1

5.6×13.1-15.6-15.6×2.1 4.2÷3.5 7.09×10.8-0.8×7.09

18.76×9.9+18.76 3.52÷2.5÷0.4 56.5×9.9+56.5

515.6×13.1-15.6-15.6×2.1 4.8×7.8+78×0.52 4.2÷3.5

4.8×100.1 56.5×9.9+56.5 7.09×10.8-0.8×7.09

18.76×9.9+18.76 3.52÷2.5÷0.4 320÷1.25÷8

9.6÷0.8÷0.4 4.2×99+4.2 15.2÷0.25÷4 0.89×100.1

17.8÷(1.78×4) 0.49÷1.4 1.25×2.5×32 3.65×10.1

3.83×4.56+3.83×5.44 9.7×99+9.7 3.14×0.68+31.4×0.032

27.5×3.7-7.5×3.7 8.54÷2.5÷0.4 0.65×101 3.2×0.25×12.5

(45.9-32.7)÷8÷0.125 5.6÷1.25÷0.8÷2.5÷0.4 4.36×12.5×8

7.2×0.2+2.4×1.4 8.9×1.01 7.74×(2.8-1.3)+1.5×2.26

3.9×2.7+3.9×7.3 18-1.8÷0.125÷0.8 12.7×9.9+1.27

21×(9.3-3.7)-5.6 5.4×11-5.4 4.5÷1.8 4.2÷3.5

63.4÷2.5÷0.4 4.9÷1.4 3.9÷(1.3×5) 930÷0.6÷5
7.7+1.54)÷0.7 2.5×2.4 2.7÷45 15÷(0.15×0.4)

0.35×1.25×2×0.8 32.4×0.9+0.1×32.4 15÷0.25

(2.5-0.25)×0.4 9.16×1.5-0.5×9.16 3.6-3.6×0.5 70÷28

0.8×(4.3×1.25) 3.12+3.12×99 28.6×101-28.6

0.86×15.7-0.86×14.7 2.4×102 2.31×1.2×0.5

7.6×0.8+0.2×7.6 0.85×199 0.25×8.5×4 4.6÷3.5

1.28×8.6+0.72×8.6 12.5×0.96×0.8 10.4-9.6×0.35 0.25×36

0.25×0.73×4 0.32×403 46×57+23×86 0.79×199

13.7×0.25-3.7÷4 2.22×9.9+6.66×6.7 2.3×16+2.3×23+2.3

101×0.87-0.91×87 10.7×16.1-15.1×10.7 3.65×4.7-36.5×0.37

回答2:

a+b)+ c = a +(b+c)
1. 2.73 + 0.89 + 1.27 2. 4.37 + 0.28 + 1.63 + 5.72

a-b-c = a -(b+c)
1. 10 - 0.432 - 2.568 2. 9.3 - 5.26 - 2.74

3. 13.4-(3.4+5.2) 4. 14.9-(5.2+4.9)

5. 18.32 - 5.47 - 4.32 6. 17.29 - 5.28 - 6.29
(a × b)×c = a ×(b × c)
1. 25 × 6.8 × 0.04 2. 0.25 × 32 × 0.125

3. 6.4 × 1.25 × 12.5
c ×(a+b)= ca + cb
1. 0.45 × 201 2. 0.58 × 10.1 3. 50.2 × 99

4. 4.7 × 9.9 5. 3.28 × 5.7 + 6.72 × 5.7

6. 2.1 × 99 + 2.1 7. 1.7 × 9.9 + 0.17

8. 23 × 0.1 + 2.3 × 9.9

1. 0.18 +4.26 -0.18 +4.26 ☆ 2. 0.58 ×1.3 ÷ 0.58 ×1.3 ☆

3. 7.3 ÷4 + 2.7 × 0.25 ☆ 4. 3.75 × 0.5 - 2.75 ÷ 2 ☆

5. 5.26 × 0.125 + 2.74 ÷ 8 ☆

a ÷ b ÷ c = a ÷ (b × c)
1. 6.3 ÷ 1.8 2. 4.2 ÷ 3.5 3. 9.5 ÷(1.9 × 8)

4. 12.8 ÷ (0.4 × 1.6) 5. 930 ÷ 0.6 ÷5

6. 63.4 ÷ 2.5 ÷ 0.4 7. (7.7 + 1.54)÷ 0.7 ☆

8. (11.7 + 9.9)÷ 0.9 ☆

竖式计算:
100 - 0.99 10.99 + 9.87 4.089 ÷ 0.047   0.24 × 390

6.9+4.8+3.1 0.456+6.22+3.78 15.89+(6.75-5.89)

4.02+5.4+0.98 5.17-1.8-3.2 13.75-(3.75+6.48)

3.68+7.56-2.68 7.85+2.34-0.85+4.66 35.6-1.8-15.6-7.2

3.82+2.9+0.18+9.1 9.6+4.8-3.6 7.14-0.53-2.47

5.27+2.86-0.66+1.63 13.35-4.68+2.65 73.8-1.64-13.8-5.36

47.8-7.45+8.8 0.398+0.36+3.64 15.75+3.59-0.59+14.25

66.86-8.66-1.34 0.25×16.2×4 (1.25-0.125)×8

3.6×102 3.72×3.5+6.28×3.5 36.8-3.9-6.1

15.6×13.1-15.6-15.6×2.1 4.8×7.8+78×0.52 32+4.9-0.9

4.8×100.1 56.5×9.9+56.5 7.09×10.8-0.8×7.09

25.48-(9.4-0.52) 4.2÷3.5 320÷1.25÷8

18.76×9.9+18.76 3.52÷2.5÷0.4 3.9-4.1+6.1-5.9

5.6÷3.5 9.6÷0.8÷0.4 4.2×99+4.2

17.8÷(1.78×4) 0.49÷1.4 1.25×2.5×32 3.65×10.1

15.2÷0.25÷4 0.89×100.1 146.5-(23+46.5)

3.83×4.56+3.83×5.44 4.36×12.5×8 9.7×99+9.7

27.5×3.7-7.5×3.7 8.54÷2.5÷0.4 0.65×101 3.2×0.25×12.5

(45.9-32.7)÷8÷0.125 3.14×0.68+31.4×0.032 5.6÷1.25÷0.8÷2.5÷0.4

7.2×0.2+2.4×1.4 8.9×1.01 7.74×(2.8-1.3)+1.5×2.26

3.9×2.7+3.9×7.3 18-1.8÷0.125÷0.8 12.7×9.9+1.27

21×(9.3-3.7)-5.6 15.02-6.8-1.02 5.4×11-5.4

2.3×16+2.3×23+2.3 9.43-(6.28-1.57) 3.65×4.7-36.5×0.37

46×57+23×86 13.7×0.25-3.7÷4 2.22×9.9+6.66×6.7

101×0.87-0.91×87 10.7×16.1-15.1×10.7 0.79×199

4.8+8.63+5.2+0.37 5.93+0.19+2.81 1.76+0.195+3.24

2.35+1.713+0.287+7.65 1.57+0.245+7.43 6.02+3.6+1.98

0.134+2.66+0.866 1.27+3.9+0.73+16.1 7.5+4.9-6.5

3.07-0.38-1.62 1.29+3.7+2.71+6.3 8-2.45-1.55

3.25+1.79-0.59+1.75 23.4-0.8-13.4-7.2 0.32×403

3.2+0.36+4.8+1.64 1.23+3.4-0.23+6.6 0.25×36

12.7-(3.7+0.84) 36.54-1.76-4.54 0.25×0.73×4

7.6×0.8+0.2×7.6 0.85×199 0.25×8.5×4

1.28×8.6+0.72×8.6 12.5×0.96×0.8 10.4-9.6×0.35

0.8×(4.3×1.25) 3.12+3.12×99 28.6×101-28.6

0.86×15.7-0.86×14.7 2.4×102 2.31×1.2×0.5

14-7.32-2.68 2.64+8.67+7.36+11.33 70÷28

(2.5-0.25)×0.4 9.16×1.5-0.5×9.16 3.6-3.6×0.5

63.4÷2.5÷0.4 4.9÷1.4 3.9÷(1.3×5)

(7.7+1.54)÷0.7 2.5×2.4 2.7÷45 15÷(0.15×0.4)

0.35×1.25×2×0.8 32.4×0.9+0.1×32.4 15÷0.25

. 3/7 × 49/9 - 4/3
5. 8/9 × 15/36 + 1/27
6. 12× 5/6 – 2/9 ×3
7. 8× 5/4 + 1/4
8. 6÷ 3/8 – 3/8 ÷6
9. 4/7 × 5/9 + 3/7 × 5/9
10. 5/2 -( 3/2 + 4/5 )
11. 7/8 + ( 1/8 + 1/9 )
12. 9 × 5/6 + 5/6
13. 3/4 × 8/9 - 1/3
14. 7 × 5/49 + 3/14
15. 6 ×( 1/2 + 2/3 )
16. 8 × 4/5 + 8 × 11/5
17. 31 × 5/6 – 5/6
18. 9/7 - ( 2/7 – 10/21 )
19. 5/9 × 18 – 14 × 2/7
20. 4/5 × 25/16 + 2/3 × 3/4
21. 14 × 8/7 – 5/6 × 12/15
22. 17/32 – 3/4 × 9/24
23. 3 × 2/9 + 1/3
24. 5/7 × 3/25 + 3/7
25. 3/14 ×× 2/3 + 1/6
26. 1/5 × 2/3 + 5/6

OK OK OK OK OK OK ?

回答3:

1 1.25x32x2.5
2 3.2 ×0.6+2.8×0.6
3 0.39x199
4 3.65x10.1
5 0.85x9.9
6 12.9x99+12.9
7 7.09x10.8-0.8x7.09
8 5.4x11-5.4
9 0.65x101
10 2.5x26+2.5x6+8 不好意思只有这么多了,想不出来了,抱歉啊

回答4:

1、0.4+0.4+0.4+0.4+0.4写成乘法算式是(
)。
2、计算小数乘法时,先移动因数的小数点,使它变成整数,因数的小数点向右移动几
位,最后把积的小数点向(
)移动几位。
3、3.64×1.7的积是(
)位小数,1.16×2.08的积是(
)位小数。
4、根据794×98=77812,填出下面各式的得数。
79.4×0.98=(

79.4×980=(

7.94×0.98=(

5、小凯做了几道题,忘记点了小数点,请你帮他点上小数点。
36×2.4=8
6
4
13×0.25=3
2
5
14.4×3.98=5
7
3
1
2
6、根据运算律,在
里填上合适的数。
6.8×2.56=
×
2.5×(1.32×0.4)=
×
×
5.7×3.8+4.3×3.8=(
+

二、判断题(对的打“√”错的打“×”
)(5分)
1、一个因数扩大10倍,另一个因数缩小到它的
,积不变。
2、两个小数相乘,积一定是小数。
3、
8.2×9.5的积一定是两位小数。
4、
3.6×1.4+3.6×8.6=3.6×(1.4+8.6)应用的乘法的结合律。
5、
0.7×0.7的积用“四舍五入法”保留一位小数约是0.5。
四、在○里填上“<”
“>”或“=”
(9分)
13.76×0.8○13.76
0.2○1.1×0.2
0.3×3○0.3×0.3
5.2×0.6○0.52×6
8.4×1.3○0.9×8.4
6.4×0.2○6.4×0.5
4.48×0.46○4.48×0.406
5.25×0.75○5.25+0.75
35.4×44.2○35.3×44.3
五、计算题(30分)
1、直接写出得数。
0.45×2.5=
0.8×1.25=
0.3×3.6=
0.3×0.3=
10×0.07=
0.3×1.4=
0.05×7=
0.92×0.4=
0.2×0.26=
0.14×4=
0.02×0.1=
1.2×0.3=
2、用竖式计算
0.04×0.12=
3.84×2.6≈
5.76×3=
(保留一位小数)
0.125×1.4≈
14×0.16=
4.8×0.25=
(保留两位小数)
3、脱式计算(能简算的要简算)
2.5×7.1×4
16.12×99+16.12
5.2×0.9+0.9×4.8
26×15.7+15.7×24
(2.275
+0.625)×0.28
64-2.64×0.5

回答5:

25 × 6.8 × 0.04
0.25 × 32 × 0.125
6.4 × 1.25 × 12.5
0.25×16.2×4
(1.25-0.125)×8
3.72×3.5+6.28×3.5
15.6×13.1-15.6-15.6×2.1
4.8×7.8+78×0.52
56.5×9.9+56.5
4.8x100.1 7.09×10.8-0.8×7.09
18.76×9.9+18.76
4.2×99+4.2
1.25×2.5×32
3.65×10.1