求比值①2.1:2.7

求比值①2.1:2.7 ② 9 8 :3 ③ 3 4 : 1 12 ④45:6.
2025-06-20 21:11:53
推荐回答(1个)
回答1:

①2.1:2.7=2.1÷2.7=
7
9


9
8
:3=
9
8
÷3=
3
8


3
4
1
12
=
3
4
÷
1
12
=9;

④45:6=45÷6=7.5.