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简便计算:4.6×2.7+23×0.56-2.3
人气:283 ℃ 时间:2019-08-26 08:11:48
解答
4.6×2.7+23×0.56-2.3
=2.3×5.4+2.3×5.6-2.3
=2.3×(5.4+5.6-1)
=2.3×10
=23
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