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23.13+25×0.16+1.87(简便计算)
人气:428 ℃ 时间:2020-02-15 08:46:35
解答
23.13+25×0.16+1.87
= (23.13 + 1.87) + (25 ×0.4) ×0.4
= 25 +10×0.4
= 25 +4
= 29
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