Year 4 Factors, Multiples and Primes Worksheet — Level 1 — Answers
Answer sheet with worked solutions for the Year 4 factors, multiples & primes worksheet.
Year 4 · Mathematics · Factors, Multiples & Primes
Year 4 Factors, Multiples and Primes Worksheet — Level 1 — Answers
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Part A — Factors
1.List all the factors of 28.
Answer: 1, 2, 4, 7, 14, 28
2.List all the factors of 21.
Answer: 1, 3, 7, 21
3.List all the factors of 24.
Answer: 1, 2, 3, 4, 6, 8, 12, 24
4.List all the factors of 30.
Answer: 1, 2, 3, 5, 6, 10, 15, 30
Part B — Multiples
5.Write the first five multiples of 10.
Answer: 10, 20, 30, 40, 50
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 6.
Answer: 6, 12, 18, 24, 30
Part C — Prime or not?
9.46 is a prime number.
Answer: False
46 = 2 × 23, so it is composite.
10.32 is a prime number.
Answer: False
32 = 2 × 16, so it is composite.
11.8 is a prime number.
Answer: False
8 = 2 × 4, so it is composite.
12.37 is a prime number.
Answer: True
37 has only two factors: 1 and 37.
Marking tips
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