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数学
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用简便方法计算:4.72+1.94+4.28+1.06 10.5-4.
用简便方法计算:4.72+1.94+4.28+1.06 10.5-4.55-3.45
人气:471 ℃ 时间:2020-03-22 08:45:16
解答
(4.72+4.28)+(1.94+1.06)10.5-(4.55+3.45)谢^_^)Y
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