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70.3乘3.9+7.03乘61简便计算
人气:430 ℃ 时间:2020-03-25 17:13:19
解答
=70.3×3.9+70.3×0.1×61
=70.3×3.9+70.3×6.1
=70.3×(3.9+6.1)
=70.3×10
=703
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