Year 5 Factors, Multiples and Primes Worksheet — Level 1 — 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 — Answers
Part A: Factors
1.List all the factors of 16.
Answer: 1, 2, 4, 8, 16
2.List all the factors of 27.
Answer: 1, 3, 9, 27
3.List all the factors of 29.
Answer: 1, 29
4.List all the factors of 31.
Answer: 1, 31
Part B: Multiples
5.Write the first five multiples of 8.
Answer: 8, 16, 24, 32, 40
6.Write the first five multiples of 12.
Answer: 12, 24, 36, 48, 60
7.Write the first five multiples of 4.
Answer: 4, 8, 12, 16, 20
8.Write the first five multiples of 5.
Answer: 5, 10, 15, 20, 25
Part C: Prime or not?
9.23 is a prime number.
Answer: True
23 has only two factors: 1 and 23.
10.22 is a prime number.
Answer: False
22 = 2 × 11, so it is composite.
11.10 is a prime number.
Answer: False
10 = 2 × 5, so it is composite.
12.30 is a prime number.
Answer: False
30 = 2 × 15, 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.