2.4+2.4+2.4+2.4=2.4×________=________.

4    9.6
分析:根據(jù)乘法的意義,求幾個(gè)相同加數(shù)的和的簡(jiǎn)便運(yùn)算叫做乘法.由此解答即可.
解答:2.4+2.4+2.4+2.4=2.4×(4)=9.6;
故答案為:4,9.6.
點(diǎn)評(píng):此題的解答主要明確乘法的意義.
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