Year 7 Factors, Multiples and Primes Worksheet — Level 2 — Practice Set 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 2 — Practice Set 3 — Answers
Part A: Factors
1.List all the factors of 72.
Answer: 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72
2.List all the factors of 73.
Answer: 1, 73
3.List all the factors of 96.
Answer: 1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 96
4.List all the factors of 54.
Answer: 1, 2, 3, 6, 9, 18, 27, 54
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 4.
Answer: 4, 8, 12, 16, 20
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 8 and 13.
Answer: 1
- Factors of 8: 1, 2, 4, 8
- Factors of 13: 1, 13
- Highest common factor = 1
10.Find the highest common factor (HCF) of 8 and 23.
Answer: 1
- Factors of 8: 1, 2, 4, 8
- Factors of 23: 1, 23
- Highest common factor = 1
11.Find the highest common factor (HCF) of 25 and 21.
Answer: 1
- Factors of 25: 1, 5, 25
- Factors of 21: 1, 3, 7, 21
- Highest common factor = 1
12.Find the highest common factor (HCF) of 19 and 36.
Answer: 1
- Factors of 19: 1, 19
- Factors of 36: 1, 2, 3, 4, 6, 9, 12, 18, 36
- Highest common factor = 1
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