ACMNA122

Identify and describe properties of prime, composite, square and triangular numbers

Elaborations

• understanding that some numbers have special properties and that these properties can be used to solve problems (Skills: Numeracy, Critical and Creative Thinking)
• representing composite numbers as a product of their prime factors and using this form to simplify calculations by cancelling common primes (Skills: Numeracy, Information and Communication Technology (ICT) Capability)
• understanding that if a number is divisible by a composite number then it is also divisible by the prime factors of that number (for example 216 is divisible by 8 because the number represented by the last three digits is divisible by 8, and hence 216 is also divisible by 2 and 4) (Skills: Numeracy, Critical and Creative Thinking)

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