精英家教网 > 小学数学 > 题目详情
3.14×0.8+0.3×3.14-3.14×0.1.
分析:3.14×0.8+0.3×3.14-3.14×0.1,运用乘法分配律进行简算.
解答:解:3.14×0.8+0.3×3.14-3.14×0.1,
=3.14×(0.8+0.3-0.1),
=3.14×1.
=3.14.
点评:此题考查的目的是理解乘法分配律的意义,并且能够灵活运用乘法分配律进行简便计算.
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