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5×13×2=13×(5×2)=13×10=130,这里运用了
乘法交换
乘法交换
律和
乘法结合
乘法结合
律.
分析:5×13×2,运用乘法交换律和结合律简算.
解答:解:5×13×2
=13×5×2(乘法交换律)
=13×(5×2)(乘法结合律)
=13×10
=130.
故答案为:乘法交换律、乘法结合律.
点评:此题考查的目的是理解掌握乘法交换律、结合律的意义,并且能够灵活运用乘法交换律、结合律进行简便计算.
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