4th Grade Factors, Multiples and Primes Worksheet — Level 1 — Practice Set 2 — Answers
Answer sheet with worked solutions for the 4th Grade factors, multiples & primes worksheet.
Success TutoringWorksheetsAnswer sheet4th Grade · Mathematics · Factors, Multiples & Primes4th Grade Factors, Multiples and Primes Worksheet — Level 1 — Practice Set 2 — Answers
Part A: Factors
1.List all the factors of 21.
Answer: 1, 3, 7, 21
2.List all the factors of 33.
Answer: 1, 3, 11, 33
3.List all the factors of 35.
Answer: 1, 5, 7, 35
4.List all the factors of 12.
Answer: 1, 2, 3, 4, 6, 12
Part B: Multiples
5.Write the first five multiples of 3.
Answer: 3, 6, 9, 12, 15
6.Write the first five multiples of 11.
Answer: 11, 22, 33, 44, 55
7.Write the first five multiples of 9.
Answer: 9, 18, 27, 36, 45
8.Write the first five multiples of 10.
Answer: 10, 20, 30, 40, 50
Part C: Prime or not?
9.14 is a prime number.
Answer: False
14 = 2 × 7, so it is composite.
10.3 is a prime number.
Answer: True
3 has only two factors: 1 and 3.
11.49 is a prime number.
Answer: False
49 = 7 × 7, so it is composite.
12.44 is a prime number.
Answer: False
44 = 2 × 22, 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.