1.25x3⼀4 3.75x75%-0.75的简便运算

2024-12-25 15:07:04
推荐回答(1个)
回答1:

原式
=1.25x0.75+3.75x0.75-0.75
=(1.25+3.75-1)x0.75
=(5-1)x0.75
=4x0.75
=3

供参考。