Some very simple math problems are as follows (fill in with fraction, column: 3 / 4 is 3 / 4) 1, 0.57 + 0.3 = () 2, 0.57 △ 0.3 = () 3, 0.57-0.3 = () 4, 0.57 × 0.3 = () (fill in with the simplest fraction) 5, 120 cm = () M 6, 15:00 on the first day = () day 7, 120 ha = () km2 (fill in the appropriate integer) 8, () 15 = 15 △ 3 / () = () / 60 = 60 / () = 0.6 Fill in questions 1 to 4 with the simplest score

Some very simple math problems are as follows (fill in with fraction, column: 3 / 4 is 3 / 4) 1, 0.57 + 0.3 = () 2, 0.57 △ 0.3 = () 3, 0.57-0.3 = () 4, 0.57 × 0.3 = () (fill in with the simplest fraction) 5, 120 cm = () M 6, 15:00 on the first day = () day 7, 120 ha = () km2 (fill in the appropriate integer) 8, () 15 = 15 △ 3 / () = () / 60 = 60 / () = 0.6 Fill in questions 1 to 4 with the simplest score

1、87/100
2、19/10
3、27/100
4、171/1000
5、1.2=6/5
6、13/8
7、1.2
8、 9 25 5 36 100