80到100有没有2,3,5的倍数

你的要求是什么（多少词）

[3, 5]＝15
100÷15＝6…………10
80÷15＝5……………5
所以.15×6＝90支.

解题思路：根据题意可知总本数是2、3、5的公倍数，因为这三个数两两互质，所以2、3、5的最小公倍数为：2×3×5=30（本），又因为在80到100之间2、3、5的公倍数是90，所以有90本练习本．

2×3×5=30（本），
因为80＜30×3=90＜100，
所以，在80到100之间2、3、5的公倍数是90，
答：这堆练习本一共有90本．

点评：
本题考点： 公因数和公倍数应用题．

考点点评： 明确求这些练习本一共有多少本，即求在80～100之间的2、3和5的公倍数，是解答此题的关键．

别忘了给分呀,纯手工制作
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求3和5在80一100的公倍数90友