Year 2 - Maths
Explain how a factor of zero or one affects the product
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 how a factor of zero or one affects the product.
Key Notes
- When zero is a factor, the product is zero.
- The product of __ and zero is zero.
- The product of zero and __ is zero.
- When one of two factors is 1, the product is equal to the other factor.
Vocabulary To Learn
- Zero: Zero is the number that represents no amount or objects.
- Product: A product is the result of two or more numbers multiplied together.
Common Mistakes To Avoid
- Children may have the misconception that multiplying always makes the number bigger and therefore 0 cannot be a product.
3 Quick Questions (With Answers)
1. Solve this in steps: explain the method from this lesson and why each step matters.
When zero is a factor, the product is zero. The product of __ and zero is zero.
2. Use this key word in a maths sentence and explain it clearly. 'Zero'
Zero is the number that represents no amount or objects. 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 have the misconception that multiplying always makes the number bigger and therefore 0 cannot be a product. Correction: Remind children that 0 groups of something is equal to zero. You can show this practically using groups of zero. When a factor is 1 the product is the other factor.
More Lessons In This Unit
- 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
- 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
Browse all guides in the Year 2 Maths guide library.