5th Grade Factors, Multiples and Primes Worksheet — Level 2 — Answers
Answer sheet with worked solutions for the 5th Grade factors, multiples & primes worksheet.
Success TutoringWorksheetsAnswer sheet5th Grade · Mathematics · Factors, Multiples & Primes5th Grade Factors, Multiples and Primes Worksheet — Level 2 — Answers
Part A: Factors
1.List all the factors of 19.
Answer: 1, 19
2.List all the factors of 25.
Answer: 1, 5, 25
3.List all the factors of 99.
Answer: 1, 3, 9, 11, 33, 99
4.List all the factors of 55.
Answer: 1, 5, 11, 55
Part B: Multiples
5.Write the first five multiples of 4.
Answer: 4, 8, 12, 16, 20
6.Write the first five multiples of 7.
Answer: 7, 14, 21, 28, 35
7.Write the first five multiples of 8.
Answer: 8, 16, 24, 32, 40
8.Write the first five multiples of 11.
Answer: 11, 22, 33, 44, 55
Part C: HCF and LCM
9.Find the highest common factor (HCF) of 28 and 9.
Answer: 1
- Factors of 28: 1, 2, 4, 7, 14, 28
- Factors of 9: 1, 3, 9
- Highest common factor = 1
10.Find the highest common factor (HCF) of 38 and 21.
Answer: 1
- Factors of 38: 1, 2, 19, 38
- Factors of 21: 1, 3, 7, 21
- Highest common factor = 1
11.Find the lowest common multiple (LCM) of 14 and 12.
Answer: 84
- Multiples of 14: 14, 28, 42, 56…
- Multiples of 12: 12, 24, 36, 48…
- Lowest common multiple = 84
12.Find the lowest common multiple (LCM) of 15 and 25.
Answer: 75
- Multiples of 15: 15, 30, 45, 60…
- Multiples of 25: 25, 50, 75, 100…
- Lowest common multiple = 75
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