28.19-8.73+3.81-13.27怎么简便运算

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28.19-8.73+3.81-13.27怎么简便运算28.19-8.73+3.81-13.27怎么简便运算28.19-8.73+3.81-13.27怎么简便运算28.19-8.73+3.81-13.

28.19-8.73+3.81-13.27怎么简便运算
28.19-8.73+3.81-13.27怎么简便运算

28.19-8.73+3.81-13.27怎么简便运算
28.19-8.73+3.81-13.27
=(28.19+3.81)-(8.73+13.27)
=32-22
=10

(28.19+3.81)-(8.73+13.27)