Year 5 Factors, Multiples and Primes Worksheet — Level 1 — Practice Set 3 — 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 3 — Answers
Part A: Factors
1.List all the factors of 15.
Answer: 1, 3, 5, 15
2.List all the factors of 30.
Answer: 1, 2, 3, 5, 6, 10, 15, 30
3.List all the factors of 14.
Answer: 1, 2, 7, 14
4.List all the factors of 33.
Answer: 1, 3, 11, 33
Part B: Multiples
5.Write the first five multiples of 11.
Answer: 11, 22, 33, 44, 55
6.Write the first five multiples of 5.
Answer: 5, 10, 15, 20, 25
7.Write the first five multiples of 3.
Answer: 3, 6, 9, 12, 15
8.Write the first five multiples of 6.
Answer: 6, 12, 18, 24, 30
Part C: Prime or not?
9.24 is a prime number.
Answer: False
24 = 2 × 12, so it is composite.
10.46 is a prime number.
Answer: False
46 = 2 × 23, so it is composite.
11.17 is a prime number.
Answer: True
17 has only two factors: 1 and 17.
12.12 is a prime number.
Answer: False
12 = 2 × 6, 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.