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简算:2..25×1.8+1.25×0.18
人气:346 ℃ 时间:2019-12-29 15:17:02
解答
2.25×1.8+1.25×0.18 = 2.25×1.8+1.25×1.8/10 = 2.25×1.8+0.125×1.8 = (2.25 + 0.125 )*1.8 =2.375 * 1.8 =4.275
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