1.58×2.4+0.42×2.4=(1.58+0.42)×2.4是運(yùn)用乘法的
- A.
交換律
- B.
結(jié)合律
- C.
分配律
C
分析:1.58×2.4+0.42×2.4,運(yùn)用乘法分配律進(jìn)行簡(jiǎn)算.
解答:1.58×2.4+0.42×2.4,
=(1.58+0.42)×2.4,
=2×2.4,
=4.8;
故選:C.
點(diǎn)評(píng):此題考查的目的是理解掌握乘法分配律的意義,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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