Year 6 Factors, Multiples and Primes Worksheet — Level 3 — Practice Set 4 — Answers
Answer sheet with worked solutions for the Year 6 factors, multiples & primes worksheet.
Success TutoringWorksheetsAnswer sheetYear 6 · Mathematics · Factors, Multiples & PrimesYear 6 Factors, Multiples and Primes Worksheet — Level 3 — Practice Set 4 — Answers
Part A: Factors
1.List all the factors of 85.
Answer: 1, 5, 17, 85
2.List all the factors of 31.
Answer: 1, 31
3.List all the factors of 97.
Answer: 1, 97
4.List all the factors of 62.
Answer: 1, 2, 31, 62
Part B: Multiples
5.Write the first five multiples of 3.
Answer: 3, 6, 9, 12, 15
6.Write the first five multiples of 5.
Answer: 5, 10, 15, 20, 25
7.Write the first five multiples of 12.
Answer: 12, 24, 36, 48, 60
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 29 and 38.
Answer: 1102
- Multiples of 29: 29, 58, 87, 116…
- Multiples of 38: 38, 76, 114, 152…
- Lowest common multiple = 1102
10.Find the highest common factor (HCF) of 20 and 20.
Answer: 20
- Factors of 20: 1, 2, 4, 5, 10, 20
- Factors of 20: 1, 2, 4, 5, 10, 20
- Highest common factor = 20
11.Find the highest common factor (HCF) of 21 and 30.
Answer: 3
- Factors of 21: 1, 3, 7, 21
- Factors of 30: 1, 2, 3, 5, 6, 10, 15, 30
- Highest common factor = 3
12.Find the lowest common multiple (LCM) of 40 and 20.
Answer: 40
- Multiples of 40: 40, 80, 120, 160…
- Multiples of 20: 20, 40, 60, 80…
- Lowest common multiple = 40
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