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(4.5X7.5X9.6)/(1.5X2.5X2.4)= 用简便计算
人气:366 ℃ 时间:2020-04-24 11:56:22
解答
(4.5X7.5X9.6)/(1.5X2.5X2.4)
= (4.5/1.5)x (7.5/2.5) x (9.6/2.4)
= 3 x 3 x 4
= 36
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