Year 5 Factors, Multiples and Primes Worksheet — Level 1 — 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 1 — Answers
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Part A — Factors
1.List all the factors of 22.
Answer: 1, 2, 11, 22
2.List all the factors of 13.
Answer: 1, 13
3.List all the factors of 27.
Answer: 1, 3, 9, 27
4.List all the factors of 19.
Answer: 1, 19
Part B — Multiples
5.Write the first five multiples of 12.
Answer: 12, 24, 36, 48, 60
6.Write the first five multiples of 9.
Answer: 9, 18, 27, 36, 45
7.Write the first five multiples of 4.
Answer: 4, 8, 12, 16, 20
8.Write the first five multiples of 11.
Answer: 11, 22, 33, 44, 55
Part C — Prime or not?
9.24 is a prime number.
Answer: False
24 = 2 × 12, so it is composite.
10.42 is a prime number.
Answer: False
42 = 2 × 21, so it is composite.
11.17 is a prime number.
Answer: True
17 has only two factors: 1 and 17.
12.40 is a prime number.
Answer: False
40 = 2 × 20, so it is composite.
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