20、15、6的最小公倍数60
因此需要
(60÷20)×(60÷15)×(60÷6)
=3×4×10
=120块
用长宽高分别是20厘米、15厘米,6厘米的长方体木块,堆成一个正方体,需要多少块?
用长宽高分别是20厘米、15厘米,6厘米的长方体木块,堆成一个正方体,需要多少块?
数学人气:621 ℃时间:2019-11-13 21:12:36
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