4th Grade Factors, Multiples and Primes Worksheet — Level 3 — Practice Set 4 — 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 3 — Practice Set 4 — Answers
Part A: Factors
1.List all the factors of 12.
Answer: 1, 2, 3, 4, 6, 12
2.List all the factors of 66.
Answer: 1, 2, 3, 6, 11, 22, 33, 66
3.List all the factors of 91.
Answer: 1, 7, 13, 91
4.List all the factors of 52.
Answer: 1, 2, 4, 13, 26, 52
Part B: Multiples
5.Write the first five multiples of 4.
Answer: 4, 8, 12, 16, 20
6.Write the first five multiples of 12.
Answer: 12, 24, 36, 48, 60
7.Write the first five multiples of 10.
Answer: 10, 20, 30, 40, 50
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 21 and 17.
Answer: 1
- Factors of 21: 1, 3, 7, 21
- Factors of 17: 1, 17
- Highest common factor = 1
10.Find the lowest common multiple (LCM) of 27 and 22.
Answer: 594
- Multiples of 27: 27, 54, 81, 108…
- Multiples of 22: 22, 44, 66, 88…
- Lowest common multiple = 594
11.Find the highest common factor (HCF) of 19 and 6.
Answer: 1
- Factors of 19: 1, 19
- Factors of 6: 1, 2, 3, 6
- Highest common factor = 1
12.Find the highest common factor (HCF) of 30 and 28.
Answer: 2
- Factors of 30: 1, 2, 3, 5, 6, 10, 15, 30
- Factors of 28: 1, 2, 4, 7, 14, 28
- Highest common factor = 2
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