47.39除以0.5这道题如何简便计算
人气：468 ℃ 时间：2019-12-26 12:44:21
解答
根据被除数和除数同时扩大相同的倍数,商不变来简算,
47.39÷0.5=（47.39×2）÷（0.5×2）=94.78÷1=94.78
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