Year 4 Factors, Multiples and Primes Worksheet — Level 2 — Practice Set 4 — 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 4 — Answers
Part A: Factors
1.List all the factors of 14.
Answer: 1, 2, 7, 14
2.List all the factors of 25.
Answer: 1, 5, 25
3.List all the factors of 60.
Answer: 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60
4.List all the factors of 30.
Answer: 1, 2, 3, 5, 6, 10, 15, 30
Part B: Multiples
5.Write the first five multiples of 5.
Answer: 5, 10, 15, 20, 25
6.Write the first five multiples of 7.
Answer: 7, 14, 21, 28, 35
7.Write the first five multiples of 3.
Answer: 3, 6, 9, 12, 15
8.Write the first five multiples of 8.
Answer: 8, 16, 24, 32, 40
Part C: HCF and LCM
9.Find the highest common factor (HCF) of 30 and 31.
Answer: 1
- Factors of 30: 1, 2, 3, 5, 6, 10, 15, 30
- Factors of 31: 1, 31
- Highest common factor = 1
10.Find the lowest common multiple (LCM) of 31 and 32.
Answer: 992
- Multiples of 31: 31, 62, 93, 124…
- Multiples of 32: 32, 64, 96, 128…
- Lowest common multiple = 992
11.Find the highest common factor (HCF) of 22 and 31.
Answer: 1
- Factors of 22: 1, 2, 11, 22
- Factors of 31: 1, 31
- Highest common factor = 1
12.Find the lowest common multiple (LCM) of 22 and 36.
Answer: 396
- Multiples of 22: 22, 44, 66, 88…
- Multiples of 36: 36, 72, 108, 144…
- Lowest common multiple = 396
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