Year 1 - Maths
Find pairs of numbers that sum to 10
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 find pairs of numbers that sum to ten.
Key Notes
- Ten can be partitioned into pairs of numbers that sum to ten.
- Quickly remembering these number pairs is important for later work.
- Knowledge of odd and even numbers can be used to decide if a pair of numbers sums to 10.
- One number pair can be used to help you find another number pair.
Vocabulary To Learn
- Sum: The result of adding two or more numbers.
- Pair: Two together, often with something in common.
- Odd: Any whole number that cannot be put into pairs.
- Even: Any whole number that can be put into pairs.
Common Mistakes To Avoid
- Some children may revert to inefficient counting strategies involving counting in ones.
3 Quick Questions (With Answers)
1. Solve this in steps: explain the method from this lesson and why each step matters.
Ten can be partitioned into pairs of numbers that sum to ten. Quickly remembering these number pairs is important for later work.
2. Use this key word in a maths sentence and explain it clearly. 'Sum'
The result of adding two or more numbers. Use this word when showing your method, then check your final answer is reasonable.
3. Spot and fix this common maths mistake.
Mistake: Some children may revert to inefficient counting strategies involving counting in ones. Correction: Provide additional practice and display visuals to support around room. Play games to promote fluency little and often as part of daily activities.
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 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
- Use number pairs to 10 in subtraction contexts Study Guide
Browse all guides in the Year 1 Maths guide library.