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16*1.25-1.25/0.25的简便计算
人气:370 ℃ 时间:2020-01-30 06:29:29
解答
16*1.25-1.25/0.25 =16×1.25-1.25×4 =1.25×(16-4) =1.25×12 =1.25×4×3 =5×3 =15
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