7.2÷0.25+2.8x4简便计算

2024-12-02 11:01:25
推荐回答(2个)
回答(1):

原式=7.2/衫尘轿判(或帆禅1/4)+2.8*4
=7.2*4+2.8*4
=(7.2+2.8)*4
=10*4
=40

回答(2):

7.2÷0.25+2.8x4
=7.2*4+2.8x4
=4*(7.2+2.8)
=4*10
=40