7.2÷ 0.25 +2.8 x4简便方法

7.2÷ 0.25 +2.8 x4简便方法
2025-05-13 07:58:08
推荐回答(1个)
回答(1):

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