A number that can only be divided by itself and one.

The result of multiplying a number by an integer.

This is a number that divides into another number exactly and without leaving a remainder.

Which of the below is the definition of a prime number?

Which of the below is not a prime number?

How many prime numbers are there between 10 and 20?

What is the largest prime number under 100?

Key Stage 2

Identify properties of numbers

Which number from the list is a factor of 14?

Which of the below is a common factor of 48 and 18?

What is the highest common factor of 12 and 30?

Which number from the list below is a multiple of 6?

Which of the numbers below is a multiple of 20 between 50 and 99?