3.7+6.3×3-2用简便方法?

2025-04-16 09:24:44
推荐回答(1个)
回答1:

3.7+6.3*3-2
=3.7+6.3+6.3*2-2
=10+6.3*2-2
=10-2+6.3*2
=8+6.3*2
=8+12.6
=20.6