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7.25×40%+2又4分之3×5分之2
人气:223 ℃ 时间:2020-04-06 20:17:36
解答
7.25×40%+2又4分之3×5分之2
=7.25×0.4+2又4分之3×0.4
=(7.25+2.75)×0.4
=10×0.4
=4
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