(3×4)×5=3×(4×5),這道題應用了
乘法結合
乘法結合
律.
分析:根據(jù)乘法結合律的意義可知,(3×4)×5=3×(4×5)應用了乘法結合律.
解答:解:(3×4)×5=3×(4×5),這道題應用了乘法結合律.
故答案為:乘法結合.
點評:乘法結合律:在乘法算式中,先乘前兩個數(shù),或先乘后兩個數(shù),積不變.
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