Year 6 - Maths
Representing ratio in different ways
Ratio and proportion
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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 describe the relationship between two factors, representing the relationship in different ways. They will build to using a ratio grid to calculate unknown values.
Lesson Summary
You can explain how to use multiplication and division to calculate unknown values with two variables.
Key Notes
- Bar models can represent unequal sharing or many to many sharing.
- Representations show the relationship between the two variables.
- The representation helps to identify the calculations needed to solve the problem.
Vocabulary To Learn
- Many to many: Use many to many to describe ratios where each value is more than one
Common Mistakes To Avoid
- Using addition and subtraction rather than multiplication and division to solve problems.
3 Quick Questions (With Answers)
1. Solve this in steps: explain the method from this lesson and why each step matters.
Bar models can represent unequal sharing or many to many sharing. Representations show the relationship between the two variables.
2. Use this key word in a maths sentence and explain it clearly. 'Many to many'
Use many to many to describe ratios where each value is more than one. Use this word when showing your method, then check your final answer is reasonable.
3. Spot and fix this common maths mistake.
Mistake: Using addition and subtraction rather than multiplication and division to solve problems. Correction: Continue to model the use of the language and notation of multiplication to calculate missing values.
More Lessons In This Unit
- Describe the relationship between two factors in a ratio context Study Guide
- Explain how and why scaling is used to make and interpret maps Study Guide
- Explain how to represent ratio and to calculate unknown values Study Guide
- Identify and describe the relationship between irregular polygons using scale factors Study Guide
- Identify and describe the relationship between regular polygons using scale factors Study Guide
- Solve problems involving ratio Study Guide
- Solve problems involving scaling and ratio Study Guide
- Use knowledge of multiplication and division to solve scaling problems in a range of contexts Study Guide
- Use multiplication and division to calculate unknown values in ratio problems Study Guide
Browse all guides in the Year 6 Maths guide library.