7th Grade Factors, Multiples and Primes Worksheet — Level 3 — Practice Set 4 — 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 3 — Practice Set 4 — Answers
Part A: Factors
1.List all the factors of 42.
Answer: 1, 2, 3, 6, 7, 14, 21, 42
2.List all the factors of 53.
Answer: 1, 53
3.List all the factors of 45.
Answer: 1, 3, 5, 9, 15, 45
4.List all the factors of 94.
Answer: 1, 2, 47, 94
Part B: Multiples
5.Write the first five multiples of 9.
Answer: 9, 18, 27, 36, 45
6.Write the first five multiples of 5.
Answer: 5, 10, 15, 20, 25
7.Write the first five multiples of 8.
Answer: 8, 16, 24, 32, 40
8.Write the first five multiples of 3.
Answer: 3, 6, 9, 12, 15
Part C: HCF and LCM
9.Find the lowest common multiple (LCM) of 24 and 13.
Answer: 312
- Multiples of 24: 24, 48, 72, 96…
- Multiples of 13: 13, 26, 39, 52…
- Lowest common multiple = 312
10.Find the highest common factor (HCF) of 22 and 27.
Answer: 1
- Factors of 22: 1, 2, 11, 22
- Factors of 27: 1, 3, 9, 27
- Highest common factor = 1
11.Find the lowest common multiple (LCM) of 26 and 38.
Answer: 494
- Multiples of 26: 26, 52, 78, 104…
- Multiples of 38: 38, 76, 114, 152…
- Lowest common multiple = 494
12.Find the lowest common multiple (LCM) of 18 and 7.
Answer: 126
- Multiples of 18: 18, 36, 54, 72…
- Multiples of 7: 7, 14, 21, 28…
- Lowest common multiple = 126
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