题目内容
直接写得数
6.3+3.7= | 9-1.8= | 1.4×0.5= | 0.49÷0.7= | 3.9-0.39= |
9.2×0.01= | 3×0.2×0.5= | 0.2÷0.125= | 1-0.2÷0.2= | (1.42+2.91)×0= |
分析:根据小数加减乘除法的计算方法进行计算即可.
解答:解:
6.3+3.7=10, | 9-1.8=7.2, | 1.4×0.5=0.7, | 0.49÷0.7=0.7, | 3.9-0.39=3.51, |
9.2×0.01=0.092, | 3×0.2×0.5=0.3, | 0.2÷0.125=1.6, | 1-0.2÷0.2=0, | (1.42+2.91)×0=0. |
点评:口算时,注意运算符号和数据,然后再进一步计算即可.
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