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 35.
Answer: 1, 5, 7, 35
2.List all the factors of 18.
Answer: 1, 2, 3, 6, 9, 18
3.List all the factors of 28.
Answer: 1, 2, 4, 7, 14, 28
4.List all the factors of 23.
Answer: 1, 23
Part B: Multiples
5.Write the first five multiples of 9.
Answer: 9, 18, 27, 36, 45
6.Write the first five multiples of 8.
Answer: 8, 16, 24, 32, 40
7.Write the first five multiples of 4.
Answer: 4, 8, 12, 16, 20
8.Write the first five multiples of 3.
Answer: 3, 6, 9, 12, 15
Part C: Prime or not?
9.24 is a prime number.
Answer: False
24 = 2 × 12, so it is composite.
10.36 is a prime number.
Answer: False
36 = 2 × 18, so it is composite.
11.31 is a prime number.
Answer: True
31 has only two factors: 1 and 31.
12.40 is a prime number.
Answer: False
40 = 2 × 20, 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.