Year 5 Factors, Multiples and Primes Worksheet — Level 2 — Answers
Answer sheet with worked solutions for the Year 5 factors, multiples & primes worksheet.
Year 5 · Mathematics · Factors, Multiples & Primes
Year 5 Factors, Multiples and Primes Worksheet — Level 2 — Answers
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Part A — Factors
1.List all the factors of 49.
Answer: 1, 7, 49
2.List all the factors of 32.
Answer: 1, 2, 4, 8, 16, 32
3.List all the factors of 16.
Answer: 1, 2, 4, 8, 16
4.List all the factors of 93.
Answer: 1, 3, 31, 93
Part B — Multiples
5.Write the first five multiples of 7.
Answer: 7, 14, 21, 28, 35
6.Write the first five multiples of 8.
Answer: 8, 16, 24, 32, 40
7.Write the first five multiples of 10.
Answer: 10, 20, 30, 40, 50
8.Write the first five multiples of 11.
Answer: 11, 22, 33, 44, 55
Part C — HCF and LCM
9.Find the lowest common multiple (LCM) of 34 and 35.
Answer: 1190
- Multiples of 34: 34, 68, 102, 136…
- Multiples of 35: 35, 70, 105, 140…
- Lowest common multiple = 1190
10.Find the highest common factor (HCF) of 30 and 13.
Answer: 1
- Factors of 30: 1, 2, 3, 5, 6, 10, 15, 30
- Factors of 13: 1, 13
- Highest common factor = 1
11.Find the highest common factor (HCF) of 39 and 27.
Answer: 3
- Factors of 39: 1, 3, 13, 39
- Factors of 27: 1, 3, 9, 27
- Highest common factor = 3
12.Find the lowest common multiple (LCM) of 36 and 31.
Answer: 1116
- Multiples of 36: 36, 72, 108, 144…
- Multiples of 31: 31, 62, 93, 124…
- Lowest common multiple = 1116
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