Year 7 Factors, Multiples and Primes Worksheet — Level 3 — 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 3 — Answers
Part A: Factors
1.List all the factors of 67.
Answer: 1, 67
2.List all the factors of 49.
Answer: 1, 7, 49
3.List all the factors of 77.
Answer: 1, 7, 11, 77
4.List all the factors of 17.
Answer: 1, 17
Part B: Multiples
5.Write the first five multiples of 12.
Answer: 12, 24, 36, 48, 60
6.Write the first five multiples of 3.
Answer: 3, 6, 9, 12, 15
7.Write the first five multiples of 10.
Answer: 10, 20, 30, 40, 50
8.Write the first five multiples of 9.
Answer: 9, 18, 27, 36, 45
Part C: HCF and LCM
9.Find the highest common factor (HCF) of 28 and 13.
Answer: 1
- Factors of 28: 1, 2, 4, 7, 14, 28
- Factors of 13: 1, 13
- Highest common factor = 1
10.Find the highest common factor (HCF) of 32 and 38.
Answer: 2
- Factors of 32: 1, 2, 4, 8, 16, 32
- Factors of 38: 1, 2, 19, 38
- Highest common factor = 2
11.Find the highest common factor (HCF) of 17 and 35.
Answer: 1
- Factors of 17: 1, 17
- Factors of 35: 1, 5, 7, 35
- Highest common factor = 1
12.Find the highest common factor (HCF) of 13 and 26.
Answer: 13
- Factors of 13: 1, 13
- Factors of 26: 1, 2, 13, 26
- Highest common factor = 13
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