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Identify prime numbers
Identify numbers with exactly two factors.
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Prime Time
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Identify composite numbers
Identify numbers with more than two factors and give factor examples.
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Use factor pairs
Find factor pairs to test whether a number is prime or composite.
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Write prime factorisation
Break a composite number into product of prime factors.
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Use factor trees
Use factor trees to find prime factors step by step.
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Compare prime factorisations
Compare two numbers using their prime factor forms.
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Find highest common factor
Find the HCF of two numbers using factor lists or prime factors.
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Find least common multiple
Find the LCM of two numbers using multiples or prime factors.
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Solve HCF-LCM word problems
Choose HCF or LCM appropriately in sharing, grouping or repetition situations.
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