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 20.
Answer: 1, 2, 4, 5, 10, 20
4.List all the factors of 33.
Answer: 1, 3, 11, 33
Part B: Multiples
5.Write the first five multiples of 4.
Answer: 4, 8, 12, 16, 20
6.Write the first five multiples of 7.
Answer: 7, 14, 21, 28, 35
7.Write the first five multiples of 11.
Answer: 11, 22, 33, 44, 55
8.Write the first five multiples of 10.
Answer: 10, 20, 30, 40, 50
Part C: Prime or not?
9.40 is a prime number.
Answer: False
40 = 2 × 20, so it is composite.
10.19 is a prime number.
Answer: True
19 has only two factors: 1 and 19.
11.48 is a prime number.
Answer: False
48 = 2 × 24, so it is composite.
12.43 is a prime number.
Answer: True
43 has only two factors: 1 and 43.
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.