6.83-(1.25+2.83)怎么简便计算?

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6.83-(1.25+2.83)怎么简便计算?

6.83-(1.25+2.83)怎么简便计算?
6.83-(1.25+2.83)怎么简便计算?

6.83-(1.25+2.83)怎么简便计算?
6.83-(1.25+2.83)
=6.83-1.25-2.83
=6.83-2.83-1.25
=4-1.25
=2.75

6.83-2.83-1.25=2.75