Year 5 Factors, Multiples and Primes Worksheet — Level 3 — Practice Set 2 — 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 2 — Answers
Part A: Factors
1.List all the factors of 65.
Answer: 1, 5, 13, 65
2.List all the factors of 77.
Answer: 1, 7, 11, 77
3.List all the factors of 63.
Answer: 1, 3, 7, 9, 21, 63
4.List all the factors of 90.
Answer: 1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90
Part B: Multiples
5.Write the first five multiples of 11.
Answer: 11, 22, 33, 44, 55
6.Write the first five multiples of 4.
Answer: 4, 8, 12, 16, 20
7.Write the first five multiples of 10.
Answer: 10, 20, 30, 40, 50
8.Write the first five multiples of 6.
Answer: 6, 12, 18, 24, 30
Part C: HCF and LCM
9.Find the lowest common multiple (LCM) of 17 and 36.
Answer: 612
- Multiples of 17: 17, 34, 51, 68…
- Multiples of 36: 36, 72, 108, 144…
- Lowest common multiple = 612
10.Find the lowest common multiple (LCM) of 10 and 22.
Answer: 110
- Multiples of 10: 10, 20, 30, 40…
- Multiples of 22: 22, 44, 66, 88…
- Lowest common multiple = 110
11.Find the lowest common multiple (LCM) of 25 and 31.
Answer: 775
- Multiples of 25: 25, 50, 75, 100…
- Multiples of 31: 31, 62, 93, 124…
- Lowest common multiple = 775
12.Find the highest common factor (HCF) of 22 and 22.
Answer: 22
- Factors of 22: 1, 2, 11, 22
- Factors of 22: 1, 2, 11, 22
- Highest common factor = 22
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