Year 5 Factors, Multiples and Primes Worksheet — Level 3 — 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 3 — Practice Set 3 — Answers
Part A: Factors
1.List all the factors of 75.
Answer: 1, 3, 5, 15, 25, 75
2.List all the factors of 97.
Answer: 1, 97
3.List all the factors of 95.
Answer: 1, 5, 19, 95
4.List all the factors of 13.
Answer: 1, 13
Part B: Multiples
5.Write the first five multiples of 12.
Answer: 12, 24, 36, 48, 60
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 7.
Answer: 7, 14, 21, 28, 35
Part C: HCF and LCM
9.Find the lowest common multiple (LCM) of 14 and 37.
Answer: 518
- Multiples of 14: 14, 28, 42, 56…
- Multiples of 37: 37, 74, 111, 148…
- Lowest common multiple = 518
10.Find the highest common factor (HCF) of 28 and 30.
Answer: 2
- Factors of 28: 1, 2, 4, 7, 14, 28
- Factors of 30: 1, 2, 3, 5, 6, 10, 15, 30
- Highest common factor = 2
11.Find the highest common factor (HCF) of 23 and 7.
Answer: 1
- Factors of 23: 1, 23
- Factors of 7: 1, 7
- Highest common factor = 1
12.Find the highest common factor (HCF) of 12 and 12.
Answer: 12
- Factors of 12: 1, 2, 3, 4, 6, 12
- Factors of 12: 1, 2, 3, 4, 6, 12
- Highest common factor = 12
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