Factors, Multiples and Primes

This series of lessons is bound to get your children’s brains working. They will show what they know about numbers as they manipulate and eliminate them. Your class will be challenged to find the lowest common multiple as well as apply their knowledge of multiplication and division when they solve a variety of problems.

This set of five multiplication and division lessons comes with all you need to teach your class about factors multiples and primes, including detailed lesson plans, lesson slides and printable resources.

Find and use factors and multiples

The first lesson in this Factors, Multiples and Primes scheme of work will encourage your class to explain what factors, products, multiples and integers are. They will be challenged to find and record factors and multiples of numbers. The lesson concludes with an open-ended activity that gives children the opportunity to share what they know about a given number.

Prime Factor Trees

During the second lesson of this Factors, Multiples and Primes scheme of work your class will make and use prime factor trees. They will be challenged to explain what a prime number is and how it differs from a composite number. Then they will apply this knowledge when finding the prime factors of numbers. They will be encouraged to check their answers by multiplying the prime factors.

Testing Divisibility

During this lesson your class will become increasingly familiar and confident with composite and prime numbers. They will be introduced to a range of divisibility tests and challenged to use the tests to eliminate composite numbers from a set of numbers.

Find Common Multiples

During the penultimate lesson in this Factors, Multiples and Primes Year 6 scheme of work your class will use different methods to find the lowest common multiples. They will be introduced to a formula method and a grid method. The children will need to use a range of skills, including multiplication, division and knowledge of factors to solve the problems.

What do we know?

The final lesson in this Factors, Multiples and Primes series challenges your class to share what they know about numbers. They will be able to apply their knowledge of prime numbers, composite numbers, factors, multiples, multiplication and division as they progress through the lesson.