列竖式计算13-3.79+6.21

2026-05-19 08:22:08
推荐回答(2个)
回答1:

13-3.79+6.21
=13-4+0.21+6.21
=9+6.42
=15.42

回答2:

列竖式计算
13-3.79+6.21
=9.21+6.21
=15.42