KS1, KS2, KS3, KS4
These printable worksheets use 100 squares to look at prime numbers.
There are four PDFs each with a different variation, and there are six 100 squares to a page.
- The first is a simple 100 square for children to try to pick out the prime numbers
- The second has the prime numbers coloured up
- The third only features the prime numbers with the rest of the squares empty
- The fourth has the non-prime numbers in a light grey so it’s more ink-friendly than sheet 2