Review the key concepts, formulae, and examples before starting your quiz.
🔑Concepts
Units of Money: Understanding the relationship between pounds (£) and pence (p), where £1 = 100p.
Decimal Notation: Writing amounts of money correctly using a decimal point (e.g., £2.50 means 2 pounds and 50 pence).
Calculating Totals: Adding multiple prices together using column addition or partitioning.
Calculating Change: Finding the difference between the amount paid and the total cost using subtraction or the 'counting on' method.
Rounding and Estimation: Estimating the total cost to ensure the final calculation is reasonable.
📐Formulae
💡Examples
Problem 1:
Sarah buys a toy car for £3.40 and a ball for £1.25. How much does she spend in total?
Solution:
£4.65
Explanation:
Add the pounds and pence separately or use column addition: £3.40 + £1.25. Adding the pence: 40p + 25p = 65p. Adding the pounds: £3 + £1 = £4. Total = £4.65.
Problem 2:
Tom pays for a £7.50 book using a £10 note. How much change should he receive?
Solution:
£2.50
Explanation:
Subtract the cost from the amount paid: £10.00 - £7.50. You can 'count on' from £7.50 to £8.00 (50p) and then from £8.00 to £10.00 (£2). Combining these gives £2.50.
Problem 3:
Lily has £5.00. She wants to buy three stickers that cost 80p each. Does she have enough money?
Solution:
Yes, she will have £2.60 left.
Explanation:
First, calculate the total cost: 3 x 80p = 240p. Convert 240p to pounds: £2.40. Since £2.40 is less than £5.00, she has enough money. The change would be £5.00 - £2.40 = £2.60.