Year 5 Factors, Multiples and Primes Worksheet — Level 2 — Practice Set 3 — Answers
Answer sheet with worked solutions for the Year 5 factors, multiples & primes worksheet.
Success TutoringWorksheetsAnswer sheetYear 5 · Mathematics · Factors, Multiples & PrimesYear 5 Factors, Multiples and Primes Worksheet — Level 2 — Practice Set 3 — Answers
Part A: Factors
1.List all the factors of 32.
Answer: 1, 2, 4, 8, 16, 32
2.List all the factors of 85.
Answer: 1, 5, 17, 85
3.List all the factors of 53.
Answer: 1, 53
4.List all the factors of 88.
Answer: 1, 2, 4, 8, 11, 22, 44, 88
Part B: Multiples
5.Write the first five multiples of 7.
Answer: 7, 14, 21, 28, 35
6.Write the first five multiples of 3.
Answer: 3, 6, 9, 12, 15
7.Write the first five multiples of 12.
Answer: 12, 24, 36, 48, 60
8.Write the first five multiples of 6.
Answer: 6, 12, 18, 24, 30
Part C: HCF and LCM
9.Find the highest common factor (HCF) of 7 and 37.
Answer: 1
- Factors of 7: 1, 7
- Factors of 37: 1, 37
- Highest common factor = 1
10.Find the lowest common multiple (LCM) of 34 and 19.
Answer: 646
- Multiples of 34: 34, 68, 102, 136…
- Multiples of 19: 19, 38, 57, 76…
- Lowest common multiple = 646
11.Find the highest common factor (HCF) of 12 and 30.
Answer: 6
- Factors of 12: 1, 2, 3, 4, 6, 12
- Factors of 30: 1, 2, 3, 5, 6, 10, 15, 30
- Highest common factor = 6
12.Find the highest common factor (HCF) of 22 and 10.
Answer: 2
- Factors of 22: 1, 2, 11, 22
- Factors of 10: 1, 2, 5, 10
- Highest common factor = 2
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