(2)
0.125
(3)
3.5
(4)
7.5
(5)
0.75
(6)
0.4
1-45. ANSWERS TO PRACTICE 1-8
(6 : 2 = 3)
a. (1)
6 = 3
(100 : 2 = 50)
100 50
1/8 = 1 : 100 = 1 x 1 = 1
(2)
100 8
1
8 100 800
1
3 2 = 7 : 100 = 7 x 1 = 7
(3)
100
2
1 2 100 200
(4)
4
1
5 = 4 : 100 = 4 x 1 = 4 = 1 or 4 1 = 1
100 5
1
5 100 500 125 5 x 100 125
25
1
1
12 2
= 25 : 100 = 25 x 1 = 25 = 1 or 25 x 1 = 1
(5)
100
2
1
2 100 200 8
2 100 8
4
(6)
30 = 3
100 10
20
3 x 100 = 300 →60% (or 3 x 100 = 60)
b. (1)
5
1
5
1
1
25
1 x 100 = 100 → 12 1/2% or 12.5%) (or x 1 100 = 25 = 12.5)
(2)
8
1 2
8
1
8
2
MD0904
1-38