identify and describe the properties of prime, composite and square numbers and use these properties to solve problems and simplify calculations

How Bloomi helps with this

This is a readiness-year topic that builds towards the next NAPLAN year. Bloomi practises it as curriculum mastery, never test drilling.

What this looks like in the classroom

• using the definition of a prime number to explain why one is not a prime number
• testing numbers by using division to distinguish between prime and composite numbers, recording the results on a number chart to identify any patterns
• representing composite numbers as a product of their factors, including prime factors when necessary and using this form to simplify calculations involving multiplication such as \(15 \times 16\) as \(5 \times 3 \times 4 \times 4\) which can be rearranged to simplify calculation to \(5 \times 4 \times 3 \times 4 = 20 \times 12\)