Year 7 Factors, Multiples and Primes Worksheet — Level 2 — Practice Set 4 — Answers
Answer sheet with worked solutions for the Year 7 factors, multiples & primes worksheet.
Success TutoringWorksheetsAnswer sheetYear 7 · Mathematics · Factors, Multiples & PrimesYear 7 Factors, Multiples and Primes Worksheet — Level 2 — Practice Set 4 — Answers
Part A: Factors
1.List all the factors of 88.
Answer: 1, 2, 4, 8, 11, 22, 44, 88
2.List all the factors of 37.
Answer: 1, 37
3.List all the factors of 42.
Answer: 1, 2, 3, 6, 7, 14, 21, 42
4.List all the factors of 84.
Answer: 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84
Part B: Multiples
5.Write the first five multiples of 6.
Answer: 6, 12, 18, 24, 30
6.Write the first five multiples of 12.
Answer: 12, 24, 36, 48, 60
7.Write the first five multiples of 4.
Answer: 4, 8, 12, 16, 20
8.Write the first five multiples of 7.
Answer: 7, 14, 21, 28, 35
Part C: HCF and LCM
9.Find the lowest common multiple (LCM) of 39 and 14.
Answer: 546
- Multiples of 39: 39, 78, 117, 156…
- Multiples of 14: 14, 28, 42, 56…
- Lowest common multiple = 546
10.Find the highest common factor (HCF) of 17 and 22.
Answer: 1
- Factors of 17: 1, 17
- Factors of 22: 1, 2, 11, 22
- Highest common factor = 1
11.Find the lowest common multiple (LCM) of 19 and 26.
Answer: 494
- Multiples of 19: 19, 38, 57, 76…
- Multiples of 26: 26, 52, 78, 104…
- Lowest common multiple = 494
12.Find the lowest common multiple (LCM) of 15 and 27.
Answer: 135
- Multiples of 15: 15, 30, 45, 60…
- Multiples of 27: 27, 54, 81, 108…
- Lowest common multiple = 135
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