Year 5 Factors, Multiples and Primes Worksheet — Level 1 — Practice Set 2 — Answers
Answer sheet with worked solutions for the Year 5 factors, multiples & primes worksheet.
Success TutoringWorksheetsAnswer sheetYear 5 · Mathematics · Factors, Multiples & PrimesYear 5 Factors, Multiples and Primes Worksheet — Level 1 — Practice Set 2 — Answers
Part A: Factors
1.List all the factors of 12.
Answer: 1, 2, 3, 4, 6, 12
2.List all the factors of 18.
Answer: 1, 2, 3, 6, 9, 18
3.List all the factors of 30.
Answer: 1, 2, 3, 5, 6, 10, 15, 30
4.List all the factors of 15.
Answer: 1, 3, 5, 15
Part B: Multiples
5.Write the first five multiples of 11.
Answer: 11, 22, 33, 44, 55
6.Write the first five multiples of 12.
Answer: 12, 24, 36, 48, 60
7.Write the first five multiples of 3.
Answer: 3, 6, 9, 12, 15
8.Write the first five multiples of 4.
Answer: 4, 8, 12, 16, 20
Part C: Prime or not?
9.33 is a prime number.
Answer: False
33 = 3 × 11, so it is composite.
10.5 is a prime number.
Answer: True
5 has only two factors: 1 and 5.
11.16 is a prime number.
Answer: False
16 = 2 × 8, so it is composite.
12.44 is a prime number.
Answer: False
44 = 2 × 22, so it is composite.
Marking tips
- Give credit for correct method even when the final answer slips — the working shows where the thinking went right.
- For open-ended tasks, use the success criteria as a checklist rather than looking for one "right" answer.
- Celebrate what went well first, then pick one thing to work on next.