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Factors, multiples and primes

Find factors, multiples, prime factors, the HCF and the LCM of numbers.

In review 1st Year HigherOrdinary
Helps to know first: Natural numbers and integers
15practice questions

Fill the gaps: 1 · Match the pairs: 1 · Multiple choice: 4 · Select all that apply: 1 · Numeric answer: 8

Each question has up to three hints, a worked explanation, and is tracked in your progress and review plan.

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Try a question

Fill the gaps
The factors of 18 are 1, 2, 3, , 9 and 18.
Hint 1

Factors come in pairs that multiply to 18.

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