5th Grade Factors, Multiples and Primes Worksheet — Level 1 — Practice Set 2 — Answers
Answer sheet with worked solutions for the 5th Grade factors, multiples & primes worksheet.
Success TutoringWorksheetsAnswer sheet5th Grade · Mathematics · Factors, Multiples & Primes5th Grade Factors, Multiples and Primes Worksheet — Level 1 — Practice Set 2 — Answers
Part A: Factors
1.List all the factors of 17.
Answer: 1, 17
2.List all the factors of 20.
Answer: 1, 2, 4, 5, 10, 20
3.List all the factors of 36.
Answer: 1, 2, 3, 4, 6, 9, 12, 18, 36
4.List all the factors of 22.
Answer: 1, 2, 11, 22
Part B: Multiples
5.Write the first five multiples of 5.
Answer: 5, 10, 15, 20, 25
6.Write the first five multiples of 4.
Answer: 4, 8, 12, 16, 20
7.Write the first five multiples of 8.
Answer: 8, 16, 24, 32, 40
8.Write the first five multiples of 11.
Answer: 11, 22, 33, 44, 55
Part C: Prime or not?
9.16 is a prime number.
Answer: False
16 = 2 × 8, so it is composite.
10.21 is a prime number.
Answer: False
21 = 3 × 7, so it is composite.
11.28 is a prime number.
Answer: False
28 = 2 × 14, so it is composite.
12.36 is a prime number.
Answer: False
36 = 2 × 18, 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.