1,。
(1)80:60 4:3 three quarters
(2)4 12 point 5 50 16
(3) 2 5 65 438+08 65 438+05 0.4% 40 40%
A: 5 B: 3
(5)8 9
Half past zero.
16
[6] Seven thirds.
(7)60 cm
(8) 15
2. Right or wrong
Three questions, 3,2, 1, 3,3
4,4 to 7 1 to 150
1 to 1 9 to 4
6 5438+0 to 6 5 to 8
Five, two-thirds, two-thirds
One twentieth of 42
Page 5 1:
Six, four, twenty-seven
Sixteen, fifteen, six fifths.
7, (1) is proportional.
200 divided by 60 equals 10/3 (hour)
3: 5 times 60 equals 2 10 (km).
A:
8, (1) 1 is 40000.
(2) One is 800 meters apart and the other is 1000 meters apart.
9. Six squares are long and three squares are wide.
10, and the solution height is x.
1.2:2.4=x:20
2.4x= 1.2 times 20
x= 10
A:
1 1, 6 times 5000000 = 3000000(cm)= 300km.
2 plus 3=5
300 times two fifths = 120km.
A:
12, (12 minus 7) divided by (18 minus 8) =1/2cm.
12 plus 8 times and a half = 16 cm.
A:
I worked hard. ...