Year 2 - Maths
Explain how a multiplication equation with 2 as a factor is related to doubling
Representing counting in 5s as the 5 times table and link to the 10 times tables
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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 represent the 5-times table in different ways. They will explain the relationship between adjacent multiples of 5 and how 5- and 10-times tables are related. 
Lesson Summary
You will learn to explain how a multiplication equation with 2 as a factor is related to doubling.
Key Notes
- If 2 is a factor, you can use doubles facts to solve the problem.
- 2 could represent the group size or the number of groups.
- Identify the group size and the number of groups in the multiplication story.
Vocabulary To Learn
- Double / doubling: To become twice as many / to multiply by two.
Common Mistakes To Avoid
- Children may not grasp why 5 + 5 is equal to 2 × 5
3 Quick Questions (With Answers)
1. Solve this in steps: explain the method from this lesson and why each step matters.
If 2 is a factor, you can use doubles facts to solve the problem. 2 could represent the group size or the number of groups.
2. Use this key word in a maths sentence and explain it clearly. 'Double / doubling'
To become twice as many / to multiply by two. 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 not grasp why 5 + 5 is equal to 2 × 5. Correction: Continue to use the stem sentences to help children understand doubling; 5 + 5 is the same as 2 groups of 5. This is the same as 2 × 5. Children can use a 2 times table chart to help them answer questions.
More Lessons In This Unit
- Explain how a factor of zero or one affects the product Study Guide
- Explain how groups of five and ten are related Study Guide
- Explain the relationship between multiples of five and ten Study Guide
- Explain what each factor represents in a multiplication story Study Guide
- Explain what each factor represents in a multiplication story when one of the factors is one Study Guide
- Represent multiplication equations in different ways Study Guide
- Use knowledge of the 2, 5 and 10 times tables to solve problems Study Guide
- Use knowledge of the 2, 5 and 10 times tables to solve problems in a range of contexts Study Guide
- Use knowledge of the relationships between the 5 and 10 times tables to solve problems Study Guide
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