1. Part Two: Introducing Percentages and Decimals
Fractions
Part Two: Introducing Percentages and Decimals

2. Lesson Objectives
To be able to convert between fractions, decimals and percentages

3. 1. Fractions to Decimals
Divide the top by the bottom
2. Fractions to Percentages
Multiply by 100
Examples

4. Change these fractions into decimals and percentages: 7.

5. 1. Percentages to Decimals
Divide by 100
2. Percentages to Fractions
Put it over 100
Simplify
Examples

6. Change these percentages into decimals and fractions: 7.

7. 1. Decimals to Percentages
Multiply by 100
2. Decimals to Fractions
Put it over 100
Simplify
Examples

8. Change these percentages into decimals and fractions: 7.

9. Fractions Decimals Percentages
31/100
0.31
31%
19/50
0.38
38%
7/20
0.35
35%
1/5
0.2
20%
17/25
0.68
68%
9/10
0.9
90%
13/40
0.325
32.5%
1/8
0.125
12.5%
49/60
0.816
81.6%
2/3
0.6
66.6%

10. Matching fractions, decimals and percentages
20%
0.125
12.5%
30%
25%
0.02
0.6
75% 2%
0.1
66.66’%
0.25
0.66’
60%
0.4
0.2
0.33’
40%
0.04 4%
33.33’%
10%
0.3
0.75
30%
0.2 2% ⅓
0.125