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Year 5 - Maths

Explain how to identify a common multiple of two or more numbers

Use common factors and multiples to solve calculations efficiently

Unit Summary

In this unit pupils will explain how to identify common factors and multiples and use this knowledge of properties of number along with knowledge of the commutative and associative laws to solve problems in a range of contexts.

Lesson Summary

You will learn to explain how to identify a common multiple of two or more numbers.

Key Notes

A common multiple is a multiple which is shared by 2 or more numbers

Vocabulary To Learn

multiple: A multiple is the result of multiplying a number by an integer (not by a fraction).
common multiple: A common multiple is a multiple that is common to two or more numbers.

Common Mistakes To Avoid

Pupils confuse the terminology of factors and multiples and mistake them for one another.

3 Quick Questions (With Answers)

1. Solve this in steps: explain the method from this lesson and why each step matters.

A common multiple is a multiple which is shared by 2 or more numbers. A common multiple is a multiple which is shared by 2 or more numbers.

2. Use this key word in a maths sentence and explain it clearly. 'multiple'

A multiple is the result of multiplying a number by an integer (not by a fraction). Use this word when showing your method, then check your final answer is reasonable.

3. Spot and fix this common maths mistake.

Mistake: Pupils confuse the terminology of factors and multiples and mistake them for one another. Correction: Spend time encouraging pupils to identify the factors in an array and within both multiplication and division equations. Make explicit that the product and dividend represent the multiple in each equation.

More Lessons In This Unit

Browse all guides in the Year 5 Maths guide library.