小数乘除法计算题及其答案

5.22×0.3=1.566 9.99×0.02=0.1998 4.67×0.9=4.203

5×2.44=12.2 1.666×6.1=10.1626 9.432×0.002=0.018864 5.6×6.5=36.4 4.88×2.9=14.152 5.61×4.3=24.123

8.9×2.4=21.36 5.5×55=302.5 9.77×0.02=0.1954

1.384×5.1=7.0584 8.78×83=728.74

2.6×61=158.6

0.059×0.2=0.0118 4.268×1.7=7.2556 57×5.7=324.9

9.46×2.85=26.961 17.8×6.4=113.92 1.5×4.9=7.35

2.5×0.88=2.2 5.555×5.2=28.886 2.22×

3.33=7.3926

7.658×85=650.93 36.02×0.3=10.806 56.78×8=454.24

除法：

85.44÷16=5.34 42.84÷7=6.12 101.7÷9=11.3

67.5÷15=4.5 230.4÷6=38.4 21.24÷36=0.59

0.736÷23=0.032 43.5÷12=3.625 35.21÷7=5.03

39.6÷24=1.65 6.21÷0.03=207 210÷1.4=150

51.3÷0.27=190 91.2÷3.8=24 0.756÷0.18=4.2

0.66÷0.3=2.2 11.97÷1.5=7.98 69.6÷2.9=24

38.4÷0.8=48 15÷0.06=250

（循环小数的用简便方法，除不尽保留2位小数）：

8.2÷0.12=68.33…0.8÷0.9=0.88…76.4÷5.4=14.148148…

4.7÷3=1.566… 1.25÷1.2=1.04166…32÷42=0.761904761904…14.36÷2.7=

5.3185185…8.33÷

6.2≈1.34 1.7÷0.03=56.66…

2.41÷0.7=

3.44285714285714…

0.18×15=2.7 0.025×14=0.35 3.06×36=110.16

0.04×0.12＝0.0048 3.84×2.6≈10.0（保留一位小数） 5.76×3＝17.28 7.15×22=157.3 90.75÷3.3=27.5 3.68×0.25=0.92

16.9÷0.13=130 1.55÷3.9=0.39743589743589… 3.7×0.016=0.0592 13.76×0.8=11.008 5.2×0.6=3.12 8.4×1.3=10.92

6.4×0.5=3.2 4.48×0.4=1.792 5.25×5=26.25

35.4×4.2=148.68 0.042×0.54=0.02268 0.76×0.32=0.2432 0.25×0.046=0.0115 2.52×3.4=8.568 1.08×25=27

0.12×0.5×0.16＝0.0096 4.8×0.25＝1.2

0.125×1.4≈0.18（保留两位小数） 2.5÷0.7≈3.571（保留三位小数）

10.1÷3.3=3.0606…（商用循环小数） 10.75÷12.5=0.86（用乘法验算）

3.25×9.04= 29.38（用除法验算）

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

=（2.5×4）×7.1 =16.12×（99+1） =（5.2+1）×0.9

=10×7.1 =16.12×100 =6.2×0.9

=71 =1612 =5.58

7.28×99+7.28 4.3×50×0.2 64－2.64×0.5

=7.28×（99+1） =4.3×（50×0.2） =64-1.32

=7.28×100 =4.3×10 =62.68

=728 =43

26×15.7＋15.7×24 (2.275 ＋0.625)×0.28

=（26+24）×15.7 =2.9×0.28

=50×15.7 =0.812

=78.5

3.94+3

4.3×0.2 1.2×(9.6÷2.4)÷4.8

=3.94+6.86 =1.2×4÷4.8

=10.8 =4.8÷4.8

=1

8.9×1.1×4.7 2.7×5.4×3.9 3.6×9.85-5.46

=9.79×4.7 =14.58×3.9 =35.46-5.46

=46.013 =56.862 =30

8.05×3.4+7.6 6.58×4.5×0.9 2.8×0.5+1.58

=27.37+7.6 =29.61×0.9 =1.4+1.58

=34.97 =26.649 =2.98

32＋4.9－0.9 4.8－4.8×0.5 (1.25－0.125)×8

=36.9-0.9 =4.8-2.4 =1.25×8-0.125×8

=36 =2.4 =10-1

=9

4.8×100.1 56.5×99＋56.5 7.09×10.8－0.8×7.09 =4.8×100+4.8×0.1 =56.5×（99+1） =7.09×（10.8-0.8）

=480+0.48 =56.5×100 =7.09×10

=480.48 =5650 =70.9

4.85 + 0.35 ÷ 1.4 8.7 × 17.4 - 8.7 × 7.4

=4.85+0.25 =8.7×10