题目内容
列竖式计算下面各题.
0.86×7= | 0.79×4= | 3.5×16= | 12.5×42= |
18.6×23= | 0.58×32= | 19.3×6= | 2.78×7= |
分析:根据小数乘法法则计算即可求解.
解答:解:(1)0.86×7=6.02;
(2)0.79×4=3.16;
(3)3.5×16=56;
3.5
×1 6
35
(4)12.5×42=75;
12.5
×4 2
50
(5)18.6×23=42.78;
(6)0.58×32=18.56;
(7)19.3×6=115.8;
(8)2.78×7=19.46.
(2)0.79×4=3.16;
(3)3.5×16=56;
3.5
×1 6
. |
21 0 |
35
. |
56.0 |
(4)12.5×42=75;
12.5
×4 2
. |
25 0 |
50
. |
75.0 |
(5)18.6×23=42.78;
(6)0.58×32=18.56;
(7)19.3×6=115.8;
(8)2.78×7=19.46.
点评:考查了小数乘法计算,解题的关键是熟练掌握计算法则,正确进行计算.
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