Year 4 - Maths
Use knowledge of addition to add commonly used prices efficiently
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 use knowledge of addition to add commonly used prices efficiently.
Key Notes
- Prices are often 1p or £1 lower than the next whole number of pounds so £2.99 not £3.00
- A number line supports rounding and adjusting strategies
- You might round one addend or all the addends
- Adjust the answer according to the rounding
Vocabulary To Learn
- addend: An addend is a number added to another number.
- round: When you round a number, you are making a number less accurate, but keeping it close to its original value.
- adjust: When you adjust a number you make a small change to it.
- redistribution: Redistribution is where part of one addend is moved to another addend.
Common Mistakes To Avoid
- Pupils use inefficient calculation strategies such as always using columnar methods.
3 Quick Questions (With Answers)
1. Solve this in steps: explain the method from this lesson and why each step matters.
Prices are often 1p or £1 lower than the next whole number of pounds so £2.99 not £3.00. A number line supports rounding and adjusting strategies.
2. Use this key word in a maths sentence and explain it clearly. 'addend'
An addend is a number added to another number. Use this word when showing your method, then check your final answer is reasonable.
3. Spot and fix this common maths mistake.
Mistake: Pupils use inefficient calculation strategies such as always using columnar methods. Correction: Promote efficient mental strategies and model clear examples of the use of these.
More Lessons In This Unit
- Calculate change when purchasing several items Study Guide
- 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 subtraction to calculate change when paying with whole pounds or notes Study Guide
Browse all guides in the Year 4 Maths guide library.