4th Grade Factors, Multiples and Primes Worksheet — Level 3 — Practice Set 3 — 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 3 — Practice Set 3 — Answers
Part A: Factors
1.List all the factors of 70.
Answer: 1, 2, 5, 7, 10, 14, 35, 70
2.List all the factors of 47.
Answer: 1, 47
3.List all the factors of 96.
Answer: 1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 96
4.List all the factors of 66.
Answer: 1, 2, 3, 6, 11, 22, 33, 66
Part B: Multiples
5.Write the first five multiples of 5.
Answer: 5, 10, 15, 20, 25
6.Write the first five multiples of 6.
Answer: 6, 12, 18, 24, 30
7.Write the first five multiples of 4.
Answer: 4, 8, 12, 16, 20
8.Write the first five multiples of 10.
Answer: 10, 20, 30, 40, 50
Part C: HCF and LCM
9.Find the highest common factor (HCF) of 33 and 19.
Answer: 1
- Factors of 33: 1, 3, 11, 33
- Factors of 19: 1, 19
- Highest common factor = 1
10.Find the highest common factor (HCF) of 33 and 22.
Answer: 11
- Factors of 33: 1, 3, 11, 33
- Factors of 22: 1, 2, 11, 22
- Highest common factor = 11
11.Find the lowest common multiple (LCM) of 15 and 18.
Answer: 90
- Multiples of 15: 15, 30, 45, 60…
- Multiples of 18: 18, 36, 54, 72…
- Lowest common multiple = 90
12.Find the lowest common multiple (LCM) of 37 and 23.
Answer: 851
- Multiples of 37: 37, 74, 111, 148…
- Multiples of 23: 23, 46, 69, 92…
- Lowest common multiple = 851
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.