Year 8 Factors, Multiples and Primes Worksheet — Level 2 — Practice Set 3 — Answers
Answer sheet with worked solutions for the Year 8 factors, multiples & primes worksheet.
Success TutoringWorksheetsAnswer sheetYear 8 · Mathematics · Factors, Multiples & PrimesYear 8 Factors, Multiples and Primes Worksheet — Level 2 — Practice Set 3 — Answers
Part A: Factors
1.List all the factors of 55.
Answer: 1, 5, 11, 55
2.List all the factors of 37.
Answer: 1, 37
3.List all the factors of 57.
Answer: 1, 3, 19, 57
4.List all the factors of 19.
Answer: 1, 19
Part B: Multiples
5.Write the first five multiples of 5.
Answer: 5, 10, 15, 20, 25
6.Write the first five multiples of 11.
Answer: 11, 22, 33, 44, 55
7.Write the first five multiples of 4.
Answer: 4, 8, 12, 16, 20
8.Write the first five multiples of 9.
Answer: 9, 18, 27, 36, 45
Part C: HCF and LCM
9.Find the lowest common multiple (LCM) of 7 and 40.
Answer: 280
- Multiples of 7: 7, 14, 21, 28…
- Multiples of 40: 40, 80, 120, 160…
- Lowest common multiple = 280
10.Find the lowest common multiple (LCM) of 6 and 6.
Answer: 6
- Multiples of 6: 6, 12, 18, 24…
- Multiples of 6: 6, 12, 18, 24…
- Lowest common multiple = 6
11.Find the highest common factor (HCF) of 19 and 23.
Answer: 1
- Factors of 19: 1, 19
- Factors of 23: 1, 23
- Highest common factor = 1
12.Find the lowest common multiple (LCM) of 36 and 33.
Answer: 396
- Multiples of 36: 36, 72, 108, 144…
- Multiples of 33: 33, 66, 99, 132…
- Lowest common multiple = 396
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