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 32.
Answer: 1, 2, 4, 8, 16, 32
2.List all the factors of 15.
Answer: 1, 3, 5, 15
3.List all the factors of 21.
Answer: 1, 3, 7, 21
4.List all the factors of 16.
Answer: 1, 2, 4, 8, 16
Part B: Multiples
5.Write the first five multiples of 5.
Answer: 5, 10, 15, 20, 25
6.Write the first five multiples of 6.
Answer: 6, 12, 18, 24, 30
7.Write the first five multiples of 12.
Answer: 12, 24, 36, 48, 60
8.Write the first five multiples of 10.
Answer: 10, 20, 30, 40, 50
Part C: Prime or not?
9.36 is a prime number.
Answer: False
36 = 2 × 18, so it is composite.
10.24 is a prime number.
Answer: False
24 = 2 × 12, so it is composite.
11.29 is a prime number.
Answer: True
29 has only two factors: 1 and 29.
12.17 is a prime number.
Answer: True
17 has only two factors: 1 and 17.
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.