题目内容
11-0.62= | 7-0.23= |
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25×6.7×4= | ||||||||
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0.15+0.25= |
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29.86-15.8= | ||||||||
10÷20= | 6.3÷0.7= | 0.56÷28= | 0.64÷8= | ||||||||
08×1.1= | 14×5= | 0.75÷0.25= | 8.9-0.98= | ||||||||
46.7-3.8= |
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0.4×0.5= | 8×0.125= |
分析:根据小数加减乘除法和分数加减法的计算方法进行计算.
25×6.7×4根据乘法交换律进行简算.
25×6.7×4根据乘法交换律进行简算.
解答:解:
11-0.62=1038 | 7-0.23=6.77 |
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25×6.7×4=670 | ||||||||||||
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0.15+0.25=0.4 |
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29.86-15.8=14.06 | ||||||||||||
10÷20=0.5 | 6.3÷0.7=9 | 0.56÷28=0.02 | 0.64÷8=0.08 | ||||||||||||
8×1.1=8.8 | 14×5=70 | 0.75÷0.25=3 | 8.9-0.98=7.92 | ||||||||||||
46.7-3.8=42.9 |
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0.4×0.5=0.2 | 8×0.125=1 |
点评:口算时,注意运算符号和数据,然后再进一步计算.
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