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简便计算4.4X5.5-44X0.33+0.44X22
人气:420 ℃ 时间:2020-08-17 16:34:39
解答
4.4*(5.5-3.3+2.2)=4.4*4.4=(5-0.6)^2=25-6+0.36=19.36
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