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,運(yùn)用乘法分配律進(jìn)行簡(jiǎn)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.
點(diǎn)評(píng):此題考查的目的是理解乘法分配律的意義,并且能夠靈活運(yùn)用乘法分配律進(jìn)行簡(jiǎn)便計(jì)算.
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