3.14*7.3+3.7*3.14-3.14简便运算

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3.14*7.3+3.7*3.14-3.14简便运算

3.14*7.3+3.7*3.14-3.14简便运算
3.14*7.3+3.7*3.14-3.14简便运算

3.14*7.3+3.7*3.14-3.14简便运算
3.14*7.3+3.7*3.14-3.14
=3.14*(7.3+3.7-1)
=3.14*10
=31.4

3.14*7.3+3.7*3.14-3.14
=3.14*7.3+3.7*3.14-3.14*1
=3.14*(7.3+3.7-1)
=3.14*10
=31.4

3.14X(7.3+3.7-1)=3.14X10=31.4