7th Grade Factors, Multiples and Primes Worksheet — Level 2 — Practice Set 2 — Answers
Answer sheet with worked solutions for the 7th Grade factors, multiples & primes worksheet.
Success TutoringWorksheetsAnswer sheet7th Grade · Mathematics · Factors, Multiples & Primes7th Grade Factors, Multiples and Primes Worksheet — Level 2 — Practice Set 2 — Answers
Part A: Factors
1.List all the factors of 96.
Answer: 1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 96
2.List all the factors of 12.
Answer: 1, 2, 3, 4, 6, 12
3.List all the factors of 50.
Answer: 1, 2, 5, 10, 25, 50
4.List all the factors of 16.
Answer: 1, 2, 4, 8, 16
Part B: Multiples
5.Write the first five multiples of 6.
Answer: 6, 12, 18, 24, 30
6.Write the first five multiples of 4.
Answer: 4, 8, 12, 16, 20
7.Write the first five multiples of 3.
Answer: 3, 6, 9, 12, 15
8.Write the first five multiples of 10.
Answer: 10, 20, 30, 40, 50
Part C: HCF and LCM
9.Find the lowest common multiple (LCM) of 12 and 21.
Answer: 84
- Multiples of 12: 12, 24, 36, 48…
- Multiples of 21: 21, 42, 63, 84…
- Lowest common multiple = 84
10.Find the highest common factor (HCF) of 14 and 8.
Answer: 2
- Factors of 14: 1, 2, 7, 14
- Factors of 8: 1, 2, 4, 8
- Highest common factor = 2
11.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
12.Find the highest common factor (HCF) of 21 and 34.
Answer: 1
- Factors of 21: 1, 3, 7, 21
- Factors of 34: 1, 2, 17, 34
- Highest common factor = 1
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