四年级下册数学同步练习-6单元3课时-乘法交换律-苏教版解析
http://t.cn/Ri466E4苏教版小学数学四年级下册《乘法交换律》同步练习及参考答案1.连线。46×13212×(125×8)120×24(25×4)×1699×12824×120(25×16)×4132×46125×8×12128×9948×50×448×(50×4)【考点】:运算定律与简便运算。【解析】:46×132=132×46(乘法交换律);120×24=24×120(乘法交换律);99×128=128×99(乘法交换律);(25×16)×4=(25×4)×16(运用了乘法交换律和乘法结合律);125×8×12=12×(125×8)(运用了乘法交换律和乘法结合律);48×50...
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