5.6x3.3+5又5分之3x7.7-5.6
=5.6x3.3+5.6x7.7-5.6
=5.6x(3.3+7.7-1)
=5.6x(11-1)
=5.6x10
=56
5.6乘3.3加5又5分之3乘7.7减5.6的简便运算急!
5.6乘3.3加5又5分之3乘7.7减5.6的简便运算急!
数学人气：838 ℃时间：2020-04-16 12:40:33
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