30减1.8乘2.6简便运算

2025-02-25 05:00:52
推荐回答(2个)
回答1:

30-1.8*2.6
=30-(-2*0.2)*2.6
=30-(1-0.1)*5.2
=30-5.2+0.52
=24.8+0.52
=25.32

回答2:

25.32 请采纳。