Per cent means “out of 100”. A percentage is just another way of writing a fraction or a decimal, and Year 5 children learn to move between all three.
What your child will learn
- Know that per cent means “out of 100”
- Link 50%, 25%, 10%, 20% and 75% to fractions
- Write a percentage as a decimal
- Find a percentage of an amount
Three names for one amount
50% is one half and 0.5. 25% is one quarter and 0.25. 10% is one tenth and 0.1. To find 10% of an amount, divide it by 10; to find 20%, find 10% and double it; to find 75%, find a quarter and multiply by 3.
Example questions
Here are a few questions like the ones in the first quest. Can you solve them?
1. What is 25% of 40?
- 4
- 25
- 10
- 30
Show answer
Answer: 10. 25% is the same as 1/4, so find 1/4 of 40: 10.
2. What is 50% of 10?
- 1
- 50
- 3
- 5
Show answer
Answer: 5. 50% is the same as 1/2, so find 1/2 of 10: 5.
3. What is 50% of 14?
Show answer
Answer: 7. 50% is the same as 1/2, so find 1/2 of 14: 7.
Tips for grown-ups
- Spot percentages on battery icons, food labels and sale signs.
- Turn a test score into a percentage: 18 out of 20 is 90%.