Year 1 - Maths
Use number pairs to 10 in subtraction contexts
Addition and subtraction facts within 10
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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 that addition is commutative. They will find pairs of numbers to 10 and add or subtract 1 from any number. Pupils will also develop their knowledge and understanding of odd and even numbers and that even numbers relate to doubling and halving.
Lesson Summary
You will learn to use number pairs to ten to solve subtraction problems and equations.
Key Notes
- Our knowledge of pairs that sum can help when solving subtraction problems and equations.
- Quickly remembering these number pairs is important for later work.
Vocabulary To Learn
- Subtract: To separate or take one number away from another.
- Difference: The result of subtracting one number from another.
Common Mistakes To Avoid
- Children may try to count back from 10 rather than using knowledge of pairs that sum to 10.
3 Quick Questions (With Answers)
1. Solve this in steps: explain the method from this lesson and why each step matters.
Our knowledge of pairs that sum can help when solving subtraction problems and equations. Quickly remembering these number pairs is important for later work.
2. Use this key word in a maths sentence and explain it clearly. 'Subtract'
To separate or take one number away from another. Use this word when showing your method, then check your final answer is reasonable.
3. Spot and fix this common maths mistake.
Mistake: Children may try to count back from 10 rather than using knowledge of pairs that sum to 10. Correction: Use practical equipment to make links between addition and subtraction explicit, demonstrating the relationship on cherry or bar models and number lines.
More Lessons In This Unit
- Add and subtract one from any number Study Guide
- Add and subtract two from even numbers within 10 Study Guide
- Add and subtract two from odd numbers within 10 Study Guide
- Addition and subtraction facts within 10 Study Guide
- Addition and subtraction involving zero Study Guide
- Double numbers and explain what doubling means Study Guide
- Explain that addition is commutative Study Guide
- Explain the difference between consecutive even numbers Study Guide
- Explain the difference between consecutive odd numbers Study Guide
- Find pairs of numbers that sum to 10 Study Guide
- Find the difference between consecutive numbers Study Guide
- Halve numbers and explain what halving means Study Guide
- Solve problems by adding 3 to 5 and 6 Study Guide
- Use knowledge of doubles to calculate near-doubles Study Guide
Browse all guides in the Year 1 Maths guide library.