Year 4 Factors, Multiples and Primes Worksheet — Level 3 — Practice Set 4 — Answers
Answer sheet with worked solutions for the Year 4 factors, multiples & primes worksheet.
Success TutoringWorksheetsAnswer sheetYear 4 · Mathematics · Factors, Multiples & PrimesYear 4 Factors, Multiples and Primes Worksheet — Level 3 — Practice Set 4 — Answers
Part A: Factors
1.List all the factors of 73.
Answer: 1, 73
2.List all the factors of 87.
Answer: 1, 3, 29, 87
3.List all the factors of 53.
Answer: 1, 53
4.List all the factors of 18.
Answer: 1, 2, 3, 6, 9, 18
Part B: Multiples
5.Write the first five multiples of 12.
Answer: 12, 24, 36, 48, 60
6.Write the first five multiples of 11.
Answer: 11, 22, 33, 44, 55
7.Write the first five multiples of 4.
Answer: 4, 8, 12, 16, 20
8.Write the first five multiples of 9.
Answer: 9, 18, 27, 36, 45
Part C: HCF and LCM
9.Find the highest common factor (HCF) of 17 and 13.
Answer: 1
- Factors of 17: 1, 17
- Factors of 13: 1, 13
- Highest common factor = 1
10.Find the highest common factor (HCF) of 14 and 29.
Answer: 1
- Factors of 14: 1, 2, 7, 14
- Factors of 29: 1, 29
- Highest common factor = 1
11.Find the lowest common multiple (LCM) of 13 and 18.
Answer: 234
- Multiples of 13: 13, 26, 39, 52…
- Multiples of 18: 18, 36, 54, 72…
- Lowest common multiple = 234
12.Find the lowest common multiple (LCM) of 24 and 24.
Answer: 24
- Multiples of 24: 24, 48, 72, 96…
- Multiples of 24: 24, 48, 72, 96…
- Lowest common multiple = 24
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