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1.2÷0.25+1.3×4怎么简便计算?
人气:231 ℃ 时间:2020-02-05 15:09:29
解答
1.2÷0.25+1.3×4
=1.2×4+1.3×4
=(1.2+1.3)×4
=2.5×4
=10
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