4th Grade Factors, Multiples and Primes Worksheet — Level 2 — Practice Set 3 — Answers
Answer sheet with worked solutions for the 4th Grade factors, multiples & primes worksheet.
Success TutoringWorksheetsAnswer sheet4th Grade · Mathematics · Factors, Multiples & Primes4th Grade Factors, Multiples and Primes Worksheet — Level 2 — Practice Set 3 — Answers
Part A: Factors
1.List all the factors of 48.
Answer: 1, 2, 3, 4, 6, 8, 12, 16, 24, 48
2.List all the factors of 70.
Answer: 1, 2, 5, 7, 10, 14, 35, 70
3.List all the factors of 61.
Answer: 1, 61
4.List all the factors of 42.
Answer: 1, 2, 3, 6, 7, 14, 21, 42
Part B: Multiples
5.Write the first five multiples of 8.
Answer: 8, 16, 24, 32, 40
6.Write the first five multiples of 5.
Answer: 5, 10, 15, 20, 25
7.Write the first five multiples of 7.
Answer: 7, 14, 21, 28, 35
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 29 and 25.
Answer: 725
- Multiples of 29: 29, 58, 87, 116…
- Multiples of 25: 25, 50, 75, 100…
- Lowest common multiple = 725
10.Find the lowest common multiple (LCM) of 32 and 30.
Answer: 480
- Multiples of 32: 32, 64, 96, 128…
- Multiples of 30: 30, 60, 90, 120…
- Lowest common multiple = 480
11.Find the highest common factor (HCF) of 29 and 36.
Answer: 1
- Factors of 29: 1, 29
- Factors of 36: 1, 2, 3, 4, 6, 9, 12, 18, 36
- Highest common factor = 1
12.Find the lowest common multiple (LCM) of 23 and 18.
Answer: 414
- Multiples of 23: 23, 46, 69, 92…
- Multiples of 18: 18, 36, 54, 72…
- Lowest common multiple = 414
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