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[8.34 8.34 8.34 8.34]乘0.25怎样简便计算?
人气:154 ℃ 时间:2019-12-17 15:16:45
解答
漏了加号吧
(8.34+8.34+8.34+8.34)×0.25
=8.34×4×0.25
=8.34×1
=8.34
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