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 25.
Answer: 1, 5, 25
2.List all the factors of 22.
Answer: 1, 2, 11, 22
3.List all the factors of 31.
Answer: 1, 31
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 10.
Answer: 10, 20, 30, 40, 50
7.Write the first five multiples of 6.
Answer: 6, 12, 18, 24, 30
8.Write the first five multiples of 4.
Answer: 4, 8, 12, 16, 20
Part C: Prime or not?
9.38 is a prime number.
Answer: False
38 = 2 × 19, so it is composite.
10.42 is a prime number.
Answer: False
42 = 2 × 21, so it is composite.
11.41 is a prime number.
Answer: True
41 has only two factors: 1 and 41.
12.3 is a prime number.
Answer: True
3 has only two factors: 1 and 3.
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.