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75÷0.25+7.25×4简便方法
人气:386 ℃ 时间:2020-03-29 23:02:37
解答
75÷0.25+7.25×4
=75x4+7.25×4
=(75+7.25)x4
=82.25x4
=80x4+2x4+0.25x4
=320+8+1
=329
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