Help your pupils master prime numbers with this Year 6 prime numbers worksheet, designed to sharpen their knowledge of number properties through a visual grid activity. Children are asked to colour all the prime numbers up to 100 within a number square and then identify four missing primes that have been replaced by question marks. This task not only reinforces the definition of a prime number but also encourages careful checking, pattern spotting and mathematical reasoning. The worksheet format makes it ideal for individual practice or guided whole-class discussion.
Key Curriculum Focus
This KS2 calculation worksheet aligns with the national curriculum by supporting:
- Identifying prime numbers and recognising prime numbers up to 100
- Recalling prime numbers and understanding how to distinguish them from composite numbers
- Using knowledge of factors and multiples to recognise number properties
The Year 6 prime numbers worksheet supports children in developing an efficient strategy for testing primes, such as checking for divisibility, and consolidates their recall of primes below 100. Highlighting missing values adds an extra level of challenge that promotes reasoning and number awareness.
Prime Numbers in Year 6 Maths
A prime number is a number greater than 1 that has exactly two factors: 1 and itself. For example, 11 is a prime number because no other whole numbers divide it evenly. In Year 6, pupils learn to recall all prime numbers up to 100, use them in factorisation problems, and distinguish them from composite numbers. Number grids help children visualise patterns and understand why certain numbers are prime.
Activity Idea: Prime Number Challenge Grid
Give each child a blank 10×10 number grid. Ask them to colour the primes in red and the multiples of each non-prime in different colours. Then ask them to look for patterns in where primes appear and which numbers seem most likely to be composite. This reinforces both multiplication facts and number classification.
Explore more Year 6 maths resources
To continue building number confidence through pattern recognition, have a look at our Year 6 Short Division Worksheets, where children practise written division using the bus stop method. For more targeted revision, explore our complete set of Year 6 maths worksheets created to support KS2 learners with number reasoning, arithmetic and mathematical fluency.
