Year 7 Factors, Multiples and Primes Worksheet — Level 1 — Practice Set 2 — Answers
Answer sheet with worked solutions for the Year 7 factors, multiples & primes worksheet.
Success TutoringWorksheetsAnswer sheetYear 7 · Mathematics · Factors, Multiples & PrimesYear 7 Factors, Multiples and Primes Worksheet — Level 1 — Practice Set 2 — Answers
Part A: Factors
1.List all the factors of 13.
Answer: 1, 13
2.List all the factors of 31.
Answer: 1, 31
3.List all the factors of 33.
Answer: 1, 3, 11, 33
4.List all the factors of 21.
Answer: 1, 3, 7, 21
Part B: Multiples
5.Write the first five multiples of 8.
Answer: 8, 16, 24, 32, 40
6.Write the first five multiples of 9.
Answer: 9, 18, 27, 36, 45
7.Write the first five multiples of 10.
Answer: 10, 20, 30, 40, 50
8.Write the first five multiples of 4.
Answer: 4, 8, 12, 16, 20
Part C: Prime or not?
9.27 is a prime number.
Answer: False
27 = 3 × 9, so it is composite.
10.26 is a prime number.
Answer: False
26 = 2 × 13, so it is composite.
11.17 is a prime number.
Answer: True
17 has only two factors: 1 and 17.
12.19 is a prime number.
Answer: True
19 has only two factors: 1 and 19.
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.