Year 5 children become fluent with two decimal places: shifting digits when multiplying by 10 and 100, ordering and rounding decimals, and adding and subtracting them in columns.
What your child will learn
- Multiply and divide decimals by 10 and 100
- Put decimals with different numbers of places in order
- Round a decimal to the nearest whole number or to one decimal place
- Add and subtract decimals with two places
Line up the point
When adding 3.47 and 1.6, the decimal points must sit one under the other. Write 1.6 as 1.60 so both numbers have the same number of places, then add the columns as usual. To order decimals, give them all two decimal places first.
Example questions
Here are a few questions like the ones in the first quest. Can you solve them?
1. Which is the biggest: 9.42 · 9.03 · 9.5?
- 9.42
- 9.03
- 9.5
Show answer
Answer: 9.5. Write them all with two decimal places: 9.50, 9.42, 9.03. The biggest is 9.5.
2. What is 6.94 ÷ 10?
- 69.4
- 694
- 0.694
- 6.940
Show answer
Answer: 0.694. Dividing by 10 moves every digit 1 place to the right. 6.94 ÷ 10 = 0.694.
3. What is 5.07 × 100?
- 5.070
- 507
- 50.7
- 0.507
Show answer
Answer: 507. Multiplying by 100 moves every digit 2 places to the left. 5.07 × 100 = 507.
Tips for grown-ups
- Add up prices on a receipt and check with a calculator.
- Compare race times or jump lengths written as decimals.