Year 4 Factors, Multiples and Primes Worksheet — Level 2 — Practice Set 2 — Answers
Answer sheet with worked solutions for the Year 4 factors, multiples & primes worksheet.
Success TutoringWorksheetsAnswer sheetYear 4 · Mathematics · Factors, Multiples & PrimesYear 4 Factors, Multiples and Primes Worksheet — Level 2 — Practice Set 2 — Answers
Part A: Factors
1.List all the factors of 46.
Answer: 1, 2, 23, 46
2.List all the factors of 89.
Answer: 1, 89
3.List all the factors of 40.
Answer: 1, 2, 4, 5, 8, 10, 20, 40
4.List all the factors of 90.
Answer: 1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90
Part B: Multiples
5.Write the first five multiples of 6.
Answer: 6, 12, 18, 24, 30
6.Write the first five multiples of 11.
Answer: 11, 22, 33, 44, 55
7.Write the first five multiples of 5.
Answer: 5, 10, 15, 20, 25
8.Write the first five multiples of 4.
Answer: 4, 8, 12, 16, 20
Part C: HCF and LCM
9.Find the lowest common multiple (LCM) of 8 and 21.
Answer: 168
- Multiples of 8: 8, 16, 24, 32…
- Multiples of 21: 21, 42, 63, 84…
- Lowest common multiple = 168
10.Find the highest common factor (HCF) of 8 and 27.
Answer: 1
- Factors of 8: 1, 2, 4, 8
- Factors of 27: 1, 3, 9, 27
- Highest common factor = 1
11.Find the highest common factor (HCF) of 31 and 24.
Answer: 1
- Factors of 31: 1, 31
- Factors of 24: 1, 2, 3, 4, 6, 8, 12, 24
- Highest common factor = 1
12.Find the lowest common multiple (LCM) of 19 and 35.
Answer: 665
- Multiples of 19: 19, 38, 57, 76…
- Multiples of 35: 35, 70, 105, 140…
- Lowest common multiple = 665
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