Year 6 - Maths
Use mental strategies and known facts to calculate the value of a missing part
Use knowledge of part-part-whole structure to solve additive problems
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Study Guides
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 identify the mathematical structures within stories and use their knowledge of additive structures to create stories and to solve problems.
Lesson Summary
You will learn to use mental strategies and known facts to calculate the value of a missing part.
Key Notes
- Drawing a model for a simpler problem helps us to solve more complicated problems.
- Known facts can be used to calculate the value of a missing part.
- Mental strategies can be used to calculate the value of a missing part.
Vocabulary To Learn
- Represent: To represent something means to show something in a different way
- Addend: Addends are any numbers added together.
Common Mistakes To Avoid
- Pupils struggle to represent the problem as a repeated subtraction equation.
3 Quick Questions (With Answers)
1. Solve this in steps: explain the method from this lesson and why each step matters.
Drawing a model for a simpler problem helps us to solve more complicated problems. Known facts can be used to calculate the value of a missing part.
2. Use this key word in a maths sentence and explain it clearly. 'Represent'
To represent something means to show something in a different way. Use this word when showing your method, then check your final answer is reasonable.
3. Spot and fix this common maths mistake.
Mistake: Pupils struggle to represent the problem as a repeated subtraction equation. Correction: Simplify problems by using numbers within 10 at first to reveal the structure of the problem. By doing this, you can show how both the subtraction and addition equations relate, which can help you to find the value of the missing parts or whole.
More Lessons In This Unit
- Create stories to match structures presented in a model Study Guide
- Explain how a combination of different parts can be equivalent to the same whole Study Guide
- Identify structures within stories and use knowledge of structures to create stories Study Guide
- Identify the missing part using knowledge of relationships and structures Study Guide
- Represent an equation in a part-part-whole model correctly Study Guide
- Use a model to interpret a part-part-whole problem with three addends Study Guide
- Use knowledge of additive structure to solve problems Study Guide
- Use part-part-whole structures to solve additive problems in a range of contexts Study Guide
- Use written strategies and known facts to calculate the value of a missing part Study Guide
Browse all guides in the Year 6 Maths guide library.