Year 4 - Maths
Calculate change when purchasing several items
Money: apply efficient strategies when calculating with money
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This pupil-friendly study guide includes a unit summary, clear notes, common mistakes, and quick questions with answers.
Unit Summary
In this unit pupils will explain represent and compare whole pounds and pence. They will convert quantities of money between pounds and pence and use the most efficient and reliable strategy to find the change.
Lesson Summary
You will learn to calculate change when purchasing more than one item.
Key Notes
- Calculating change can be thought of as finding the difference between the cost and the amount of money given.
- If you are buying several items, you can add the total cost and then find the change.
- If you are buying several items, you can subtract each item one at a time.
Vocabulary To Learn
- Minuend: The minuend is the number being subtracted from.
- Subtrahend: A subtrahend is a number subtracted from another.
Common Mistakes To Avoid
- Errors in column addition can occur when pupils fail to align their digits properly.
3 Quick Questions (With Answers)
1. Solve this in steps: explain the method from this lesson and why each step matters.
Calculating change can be thought of as finding the difference between the cost and the amount of money given. If you are buying several items, you can add the total cost and then find the change.
2. Use this key word in a maths sentence and explain it clearly. 'Minuend'
The minuend is the number being subtracted from. Use this word when showing your method, then check your final answer is reasonable.
3. Spot and fix this common maths mistake.
Mistake: Errors in column addition can occur when pupils fail to align their digits properly. Correction: Encourage pupils to align their decimal points before setting out the rest of the calculation.
More Lessons In This Unit
- Convert quantities of money between pounds and pence Study Guide
- Explain and represent whole pounds and pence as a quantity of money Study Guide
- Explain and represent whole pounds as a quantity of money Study Guide
- Explain how to compare amounts of money without converting Study Guide
- Solve a range of problems, including finding change Study Guide
- Use and explain the most efficient strategies when adding quantities of money Study Guide
- Use and explain the most efficient strategies when subtracting quantities of money Study Guide
- Use knowledge of addition to add commonly used prices efficiently Study Guide
- Use knowledge of subtraction to calculate change when paying with whole pounds or notes Study Guide
Browse all guides in the Year 4 Maths guide library.