Year 2 - Maths
Explain that factor pairs can be written in any order
Representing counting in 2s, 5s and 10s as the 2, 5 and 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 2x 10x table in different ways and use 2x 10x table to solve problems. They will explain the relationship between adjacent multiples of 2/10 and that factor pairs can be written in any order.
Lesson Summary
You will learn to explain that factor pairs can be written in any order.
Key Notes
- 5 groups of 2 can be said as 2, five times so 5 x 2 = 2 x 5
- Factor pairs can be written in any order.
- You can say that multiplication is commutative.
Vocabulary To Learn
- Commutative: Multiplication is commutative. This means the order of the factors can be changed without changing the calculation or product.
- 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 confuse identifying the number of groups and group size.
3 Quick Questions (With Answers)
1. Solve this in steps: explain the method from this lesson and why each step matters.
5 groups of 2 can be said as 2, five times so 5 x 2 = 2 x 5. Factor pairs can be written in any order.
2. Use this key word in a maths sentence and explain it clearly. 'Commutative'
Multiplication is commutative. This means the order of the factors can be changed without changing the calculation or product. 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 confuse identifying the number of groups and group size. Correction: Use sentence stems to support children's thinking and model writing the equation, e.g. for 2 groups of 5 we can say 2 × 5 For 5, two times we can say 5 × 2.
More Lessons In This Unit
- Explain the relationship between adjacent multiples of 10 Study Guide
- Explain the relationship between adjacent multiples of 2 Study Guide
- Explain the relationship between adjacent multiples of 5 Study Guide
- Represent counting in fives as the 5 times table Study Guide
- Represent counting in tens as the 10 times table Study Guide
- Represent the 10 times table in different ways Study Guide
- Represent the 2 times table in different ways Study Guide
- Represent the 5 times table in different ways Study Guide
- Use knowledge of the 2 times table to solve problems Study Guide
Browse all guides in the Year 2 Maths guide library.