Year 4 Factors, Multiples and Primes Worksheet — Level 2 — Practice Set 3 — 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 3 — Answers
Part A: Factors
1.List all the factors of 85.
Answer: 1, 5, 17, 85
2.List all the factors of 29.
Answer: 1, 29
3.List all the factors of 86.
Answer: 1, 2, 43, 86
4.List all the factors of 68.
Answer: 1, 2, 4, 17, 34, 68
Part B: Multiples
5.Write the first five multiples of 12.
Answer: 12, 24, 36, 48, 60
6.Write the first five multiples of 10.
Answer: 10, 20, 30, 40, 50
7.Write the first five multiples of 8.
Answer: 8, 16, 24, 32, 40
8.Write the first five multiples of 4.
Answer: 4, 8, 12, 16, 20
Part C: HCF and LCM
9.Find the highest common factor (HCF) of 9 and 18.
Answer: 9
- Factors of 9: 1, 3, 9
- Factors of 18: 1, 2, 3, 6, 9, 18
- Highest common factor = 9
10.Find the lowest common multiple (LCM) of 30 and 33.
Answer: 330
- Multiples of 30: 30, 60, 90, 120…
- Multiples of 33: 33, 66, 99, 132…
- Lowest common multiple = 330
11.Find the highest common factor (HCF) of 17 and 31.
Answer: 1
- Factors of 17: 1, 17
- Factors of 31: 1, 31
- Highest common factor = 1
12.Find the lowest common multiple (LCM) of 32 and 37.
Answer: 1184
- Multiples of 32: 32, 64, 96, 128…
- Multiples of 37: 37, 74, 111, 148…
- Lowest common multiple = 1184
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