Year 4 Factors, Multiples and Primes Worksheet — Level 3 — 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 3 — Practice Set 3 — Answers
Part A: Factors
1.List all the factors of 87.
Answer: 1, 3, 29, 87
2.List all the factors of 73.
Answer: 1, 73
3.List all the factors of 66.
Answer: 1, 2, 3, 6, 11, 22, 33, 66
4.List all the factors of 67.
Answer: 1, 67
Part B: Multiples
5.Write the first five multiples of 6.
Answer: 6, 12, 18, 24, 30
6.Write the first five multiples of 12.
Answer: 12, 24, 36, 48, 60
7.Write the first five multiples of 11.
Answer: 11, 22, 33, 44, 55
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 12 and 37.
Answer: 444
- Multiples of 12: 12, 24, 36, 48…
- Multiples of 37: 37, 74, 111, 148…
- Lowest common multiple = 444
10.Find the lowest common multiple (LCM) of 10 and 12.
Answer: 60
- Multiples of 10: 10, 20, 30, 40…
- Multiples of 12: 12, 24, 36, 48…
- Lowest common multiple = 60
11.Find the lowest common multiple (LCM) of 17 and 32.
Answer: 544
- Multiples of 17: 17, 34, 51, 68…
- Multiples of 32: 32, 64, 96, 128…
- Lowest common multiple = 544
12.Find the highest common factor (HCF) of 16 and 21.
Answer: 1
- Factors of 16: 1, 2, 4, 8, 16
- Factors of 21: 1, 3, 7, 21
- Highest common factor = 1
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