小数乘法、除法计算
题
快递公司问题件快递公司问题件货款处理关于圆的周长面积重点题型关于解方程组的题及答案关于南海问题
一、 乘法:用竖式计算
5.6×2.9 3.77×1.8 0.02×96 5.22×0.3 57×5.7 9.46×2.85 17.8×6.4 1.5×4.9
9.99×0.02 4.67×0.9 5×2.44 1.666×6.1 2.5×0.88 5.555×5.2 2.22×3.33 7.658×85
9.432×0.002 5.6×6.5 4.88×2.9 5.61×4.3 二、除法:
85.44?16 42.84?7 101.7?9 67.5?15
8.9×2.4 5.5×55 9.77×0.02 1.384×5.1
230.4?6 21.24?36 0.736?23 43.5?12
8.78×83 2.6×61 0.059×0.2 4.268×1.7
35.21?7 39.6?24 6.21?0.03 210?1.4 1.25?1.2 32?42 14.36?2.7 8.33?6.2
51.3?0.27 91.2?3.8 0.756?0.18 0.66?0.3 1.7?0.03 2.41?0.7
11.97?1.5 69.6?2.9 38.4?0.8 15?0.06
用竖式计算
0.396?1.2= 0.756?0.36= 15.6×13=
(循环小数的用简便方法，除不尽保留2位小数):
8.2?0.12 0.8?0.9 76.4?5.4 4.7?3 0.18×15= 0.025×14= 3.06×36=
0.04×0.12, 3.84×2.6? 5.76×3
,
35.4×4.2 0.042×0.54
0.76×0.32
7.15×22 90.75?3.3 3
.68×0.25
0.25×0.046 2.52×3.4 1.0
8×25
16.9?0.13 1.55?3.9 3
.7×0.016
13.76×0.8= 5.2×0.6
8.4×1.3
0.12×0.5×0.16, 4.8×0.25
, 0.125×1.4?(保留两位小数)
2.5?0.7= (保留三位小数) 10.1?3.3= (商
6.4×0.5 4.48×0.4 用循环小数)
5.25×5
10.75?12.5= (用乘法验算) 3.25×9.04= (用
除法验算)
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