1.25÷(4×2.5÷4×2.5)简便运算

2024-11-26 10:01:42
推荐回答(1个)
回答1:

首先括号内乘以4又除以4抵消,
得 1.25/(2.5*2.5)
= 2.5*0.5(2.5*2.5)
=0.5/2.5
=1/5