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 53.
Answer: 1, 53
2.List all the factors of 70.
Answer: 1, 2, 5, 7, 10, 14, 35, 70
3.List all the factors of 91.
Answer: 1, 7, 13, 91
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 11.
Answer: 11, 22, 33, 44, 55
6.Write the first five multiples of 3.
Answer: 3, 6, 9, 12, 15
7.Write the first five multiples of 6.
Answer: 6, 12, 18, 24, 30
8.Write the first five multiples of 10.
Answer: 10, 20, 30, 40, 50
Part C: HCF and LCM
9.Find the highest common factor (HCF) of 7 and 11.
Answer: 1
- Factors of 7: 1, 7
- Factors of 11: 1, 11
- Highest common factor = 1
10.Find the highest common factor (HCF) of 6 and 37.
Answer: 1
- Factors of 6: 1, 2, 3, 6
- Factors of 37: 1, 37
- Highest common factor = 1
11.Find the highest common factor (HCF) of 38 and 24.
Answer: 2
- Factors of 38: 1, 2, 19, 38
- Factors of 24: 1, 2, 3, 4, 6, 8, 12, 24
- Highest common factor = 2
12.Find the highest common factor (HCF) of 15 and 12.
Answer: 3
- Factors of 15: 1, 3, 5, 15
- Factors of 12: 1, 2, 3, 4, 6, 12
- Highest common factor = 3
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