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3.2+3.2+3.2+3.2+3.2改用乘法算式表示是________,这个乘法算式表示的意义是________.

3.2×5    3.2的5倍是多少
分析:在3.2+3.2+3.2+3.2+3.2中,有5个3.2,所以改用乘法算式表示是 3.2×5;意义是3.2的5倍是多少.
解答:3.2+3.2+3.2+3.2+3.2改用乘法算式表示是3.2×5,这个乘法算式表示的意义是3.2的5倍是多少.
故答案为:3.2×5,3.2的5倍是多少.
点评:此题考查了把几个相同加数的算式改成乘法算式的方法,以及对乘法算式意义的考查.
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