6.72⼀9.9+0.672用简便怎么算

2024-11-20 12:41:43
推荐回答(1个)
回答(1):

6.72×9.9+0.672
=6.72×9.9+6.72×0.1
=6.72×(9.9+0.1)
=6.72×10
=67.2