1.2x2.5+0.8+2.5简便运算谢谢

2025-05-16 20:58:01
推荐回答(5个)
回答1:

(1+1+0.2)×2.5+0.8
=2×2.5+0.2×2.5+0.8
=5+0.4+0.8
=6.2

回答2:

(1.2+0.8)x2.5

回答3:

 

回答4:

 

回答5: