7.2x0.25 +2.8÷4怎样简便计算

2025-05-14 01:19:00
推荐回答(1个)
回答1:

7.2x0.25 +2.8÷4
=7.2x1/4 +2.8÷4
=7.2÷4 +2.8÷4
=(7.2 +2.8)÷4
=10÷4
=2.5