A prime number is an integer greater than one with exactly two factors.

Checking understanding of prime numbers

Maths

Checking understanding of factors, multiples, squares and cubes

Securing understanding of factors, multiples, squares and cubes

Listing multiples

Divisibility tests for 2 and 3

Divisibility tests for 6 and 9

Divisibility tests for 5 and 10

Divisibility tests for 4 and 8

Square and cube numbers

Square and cube roots

Power notation

Powers and roots using a calculator

Listing factors

Expressing an integer as a product of its prime factors

Calculating integers from their prime factor expressions

Highest common factor

Lowest common multiple

HCF or LCM

Problem solving with factors, multiples, squares and cubes

This unit on factors, multiples, squares and cubes helps pupils build on their understanding that any positive integer can be expressed as a product of its factors. This skill is used in the next unit to explore multiplying and dividing with decimals.

In this unit, pupils learnt how to identify common factors and common multiples. in this unit, pupils build on this understanding to find the LCM and HCF

In this unit pupils develop their understanding of factors and multiples, then extend this knowledge to learn general divisibility tests for integers and develop strategies to determine the highest common factor and lowest common multiple of two or more integers.

Properties of number: factors, multiples, squares and cubes

Fill in the missing word from this sentence:  A prime number has exactly {{ }} factors.

Which of the following arrays shows that 9 is not a prime number?

Which of the following is not a prime number?

True, you can't divide it by 2, 5, 7 or 10.

False, it has more than 2 factors: $$1 \times 51$$ and $$3 \times 17$$

True, because 3, 13 and 23 are prime numbers.  

False, 33 ends in a 3, but it has 2 factor pairs.

True or false?  All numbers ending in 3 are prime numbers.  

Which number is the odd one out in this list? 43, 53, 63, 73

The {{ }} of two factors gives a multiple.

Which of the following is not a factor pair of 72? 

Which factor is missing from the Venn diagram?

Which of the following is not a common factor of 24 and 32?

5, 10, 15 and 30 are factors of 30 but not 18

The common factors of 18 and 30 are all factors of 6

Which of the following is not true of the Venn diagram?

Exit Quiz

Fill in the missing word from this sentence: A prime number has exactly factors.