五年级数学下册2因数与倍数因数和倍数补充习题(1)新人教版.doc

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1第 2 单元 因数与倍数因数和倍数说一说哪个数是哪个数的倍数,哪个数是哪个数的因数。3226414342答案提示:64 是 2 和 32 的倍数,32 和 2 是 64 的因数。42 是 14 和 3 的倍数,14 和 3 是 42 的因数。解题思路:322=64,写成除法算式可以是 64322,商是整数且没有余数,所以 64 是 2 和 32的倍数,32 和 2 是 64 的因数。同样的,14342,写成除法算式可以是 42143,商是整数且没有余数,42 是14 和 3 的倍数,14 和 3 是 42 的因数。2

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