题目内容
用竖式计算: 0.86×1.6= 1.376 1.376 ; |
25.8×4.7= 121.26 121.26 ; |
40.9×2.6= 106.34 106.34 ; |
82.4×2.8= 230.72 230.72 ; |
0.45×10.8= 4.86 4.86 ; |
0.37×2.9= 1.073 1.073 . |
分析:依据小数乘法竖式计算法则解答.
解答:解:(1)0.86×1.6=1.376;
(2)25.8×4.7=121.26;
(3)40.9×2.6=106.34;
(4)82.4×2.8=230.72,
(5)0.45×10.8=4.86;
(6)0.37×2.9=1.073;
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1.376 |
(2)25.8×4.7=121.26;
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121.26 |
(3)40.9×2.6=106.34;
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106.34 |
(4)82.4×2.8=230.72,
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230.72 |
(5)0.45×10.8=4.86;
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4.860 |
(6)0.37×2.9=1.073;
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1.073 |
点评:解答本题时要知道:积的小数位数等于两个因数小数位数的和.
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