Year 1 - Maths
Double numbers and explain what doubling means
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 double numbers and explain what doubling means.
Key Notes
- When both addends are equal, we are doubling.
- Doubling means adding two equal addends.
- Doubling a whole number always gives an even number.
Vocabulary To Learn
- Double / doubling: To become twice as many.
- Addends: Any of the numbers that are added together.
- Equal: Exactly the same amount or value.
Common Mistakes To Avoid
- Children may struggle to see that a double is two of the same thing.
3 Quick Questions (With Answers)
1. Solve this in steps: explain the method from this lesson and why each step matters.
When both addends are equal, we are doubling. Doubling means adding two equal addends.
2. Use this key word in a maths sentence and explain it clearly. 'Double / doubling'
To become twice as many. 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 struggle to see that a double is two of the same thing. Correction: Spend time exploring doubles that can be found in the children's immediate environment e.g. using their hands or playing a game of dominoes.
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
- 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
- Use number pairs to 10 in subtraction contexts Study Guide
Browse all guides in the Year 1 Maths guide library.