Maths - Percentages Gallery
Percentages and Decimals
48% = 48/100 = 0.48
- Converting percentages to decimals is easy.
- 48 ÷ 100 = 0.48
Percentages and Decimals
73% = 0.73
- This is very easy!
- Are there harder examples?
Percentages and Decimals
234% = ?
- Can we have more than 100% ?
Percentages and Decimals
234% = 2.34
- No problem.
- More than 100% gives us a decimal more than 1.
Percentages and Decimals
70% = 0.70 = 0.7
- Bear this answer in mind when you look at the next example...
Percentages and Decimals
7% = 0.07
- People often make a mistake with this one.
- Remember: 7% is 7/100, not 7/10.
- Remember: 7% is 0.07, not 0.7
Percentages of Amounts
17% of 40
0.17 × 40
- Use the decimal version of the percentage.
- This is the method to use if you have a calculator!
Percentages of Amounts
90% of 387
0.9 × 387
Percentages of Amounts
3% of 1254
0.03 × 1254
Percentages of Amounts
140% of 62
1.4 × 62
- How does the answer compare to the original amount?
Percentages Increases
Increase 45 by 12%
1.12 × 45
- 100% of 45 is 45.
- We want 12% extra.
- We want 112% of 45.
Percentages Increases
Increase 107 by 89%
1.89 × 107
- 100% of 107 is 107.
- We want 89% extra.
- We want 189% of 45.
Percentages Increases
Increase 7 by 4%
1.04 × 7
- We want 4% extra.
- We want 104% of 7.
Percentages Increases
Increase 93 by 120%
2.2 × 93
- We want 120% extra.
- We want 220% of 93.
Percentages Decreases
Decrease 52 by 12%
? × 52
- 100% of 52 is 52.
- We want 12% less.
Percentages Decreases
Decrease 52 by 12%
0.88 × 52
- 100% of 52 is 52.
- We want 12% less.
- We want 88% of 52.