Year 2 - Maths
Explain what each factor represents in a multiplication story when one of the factors is one
Representing counting in 5s as the 5 times table and link to the 10 times tables
Study Hub
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 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 what each factor represents in a multiplication story when one of the factors is one.
Key Notes
- When there are two factors and one is equal to 1 then the product is equal to the other factor.
- 1 can 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
- factor: A factor is a number which exactly divides another whole number.
- product: A product is the result of two or more numbers multiplied together.
Common Mistakes To Avoid
- Pupils may not recognise that 1 can be a factor, particularly when the context includes 1 group.
3 Quick Questions (With Answers)
1. Solve this in steps: explain the method from this lesson and why each step matters.
When there are two factors and one is equal to 1 then the product is equal to the other factor. 1 can represent the group size or the number of groups.
2. Use this key word in a maths sentence and explain it clearly. 'factor'
A factor is a number which exactly divides another whole number. Use this word when showing your method, then check your final answer is reasonable.
3. Spot and fix this common maths mistake.
Mistake: Pupils may not recognise that 1 can be a factor, particularly when the context includes 1 group. Correction: Work with children to discuss groups and what they can see, such as 3 groups of 4 Reduce the number of groups to 2 and then 1 group and identify that 1 group can still be used. Then attach this to multiplication and expressions.
More Lessons In This Unit
- Explain how a factor of zero or one affects the product Study Guide
- Explain how a multiplication equation with 2 as a factor is related to doubling 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
- 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
Browse all guides in the Year 2 Maths guide library.