1和
和2
3和
4和
= ÷
1=
的分数单位是,它有个这样的单位;至少再添上个这样的单位就可以成为整数.
=
4 2 1
3 2 5 4 1
= = = =
5= =
① =
② =
③ =
④ =
⑤ =
⑥ =