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求124.68+324.68+524.68+724.68+924.68=?的简便计算,
人气:208 ℃ 时间:2020-05-24 19:11:12
解答
124.68+324.68+524.68+724.68+924.68
=100+300+500+700+900+24.68*5
=2500+123.4
=2623.4
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