Year 4 Factors, Multiples and Primes Worksheet — Level 2 — Practice Set 3 — 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 3 — Answers
Part A: Factors
1.List all the factors of 77.
Answer: 1, 7, 11, 77
2.List all the factors of 97.
Answer: 1, 97
3.List all the factors of 19.
Answer: 1, 19
4.List all the factors of 33.
Answer: 1, 3, 11, 33
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 6.
Answer: 6, 12, 18, 24, 30
8.Write the first five multiples of 9.
Answer: 9, 18, 27, 36, 45
Part C: HCF and LCM
9.Find the lowest common multiple (LCM) of 7 and 14.
Answer: 14
- Multiples of 7: 7, 14, 21, 28…
- Multiples of 14: 14, 28, 42, 56…
- Lowest common multiple = 14
10.Find the highest common factor (HCF) of 34 and 36.
Answer: 2
- Factors of 34: 1, 2, 17, 34
- Factors of 36: 1, 2, 3, 4, 6, 9, 12, 18, 36
- Highest common factor = 2
11.Find the highest common factor (HCF) of 17 and 39.
Answer: 1
- Factors of 17: 1, 17
- Factors of 39: 1, 3, 13, 39
- Highest common factor = 1
12.Find the highest common factor (HCF) of 32 and 40.
Answer: 8
- Factors of 32: 1, 2, 4, 8, 16, 32
- Factors of 40: 1, 2, 4, 5, 8, 10, 20, 40
- Highest common factor = 8
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