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(3×4)×5=3×(4×5),这道题应用了
乘法结合
乘法结合
律.
分析:根据乘法结合律的意义可知,(3×4)×5=3×(4×5)应用了乘法结合律.
解答:解:(3×4)×5=3×(4×5),这道题应用了乘法结合律.
故答案为:乘法结合.
点评:乘法结合律:在乘法算式中,先乘前两个数,或先乘后两个数,积不变.
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180÷60=12×25=0÷90=
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