Year 4 Factors, Multiples and Primes Worksheet — Level 2 — Practice Set 2 — Answers
Answer sheet with worked solutions for the Year 4 factors, multiples & primes worksheet.
Success TutoringWorksheetsAnswer sheetYear 4 · Mathematics · Factors, Multiples & PrimesYear 4 Factors, Multiples and Primes Worksheet — Level 2 — Practice Set 2 — Answers
Part A: Factors
1.List all the factors of 25.
Answer: 1, 5, 25
2.List all the factors of 36.
Answer: 1, 2, 3, 4, 6, 9, 12, 18, 36
3.List all the factors of 20.
Answer: 1, 2, 4, 5, 10, 20
4.List all the factors of 94.
Answer: 1, 2, 47, 94
Part B: Multiples
5.Write the first five multiples of 4.
Answer: 4, 8, 12, 16, 20
6.Write the first five multiples of 12.
Answer: 12, 24, 36, 48, 60
7.Write the first five multiples of 9.
Answer: 9, 18, 27, 36, 45
8.Write the first five multiples of 3.
Answer: 3, 6, 9, 12, 15
Part C: HCF and LCM
9.Find the lowest common multiple (LCM) of 32 and 31.
Answer: 992
- Multiples of 32: 32, 64, 96, 128…
- Multiples of 31: 31, 62, 93, 124…
- Lowest common multiple = 992
10.Find the lowest common multiple (LCM) of 37 and 18.
Answer: 666
- Multiples of 37: 37, 74, 111, 148…
- Multiples of 18: 18, 36, 54, 72…
- Lowest common multiple = 666
11.Find the lowest common multiple (LCM) of 13 and 10.
Answer: 130
- Multiples of 13: 13, 26, 39, 52…
- Multiples of 10: 10, 20, 30, 40…
- Lowest common multiple = 130
12.Find the highest common factor (HCF) of 39 and 34.
Answer: 1
- Factors of 39: 1, 3, 13, 39
- Factors of 34: 1, 2, 17, 34
- Highest common factor = 1
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