题目内容
10×
+17×75%-7×0.75.
3 | 4 |
分析:本题要运用乘法的分配律进行解答,先把
化成0.75,把75%化成0.75,然后再用0.75×(10+17-7)进行解答.
3 |
4 |
解答:解:10×
+17×75%-7×0.75,
=10×0.75+17×0.75-7×0.75,
=0.75×(10+17-7),
=0.75×20,
=15.
3 |
4 |
=10×0.75+17×0.75-7×0.75,
=0.75×(10+17-7),
=0.75×20,
=15.
点评:本题主要考查了小数乘法的计算法则及乘法分配律的应用.

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