Year 7 Factors, Multiples and Primes Worksheet — Level 2 — Answers
Answer sheet with worked solutions for the Year 7 factors, multiples & primes worksheet.
Success TutoringWorksheetsAnswer sheetYear 7 · Mathematics · Factors, Multiples & PrimesYear 7 Factors, Multiples and Primes Worksheet — Level 2 — Answers
Part A: Factors
1.List all the factors of 28.
Answer: 1, 2, 4, 7, 14, 28
2.List all the factors of 59.
Answer: 1, 59
3.List all the factors of 53.
Answer: 1, 53
4.List all the factors of 100.
Answer: 1, 2, 4, 5, 10, 20, 25, 50, 100
Part B: Multiples
5.Write the first five multiples of 5.
Answer: 5, 10, 15, 20, 25
6.Write the first five multiples of 6.
Answer: 6, 12, 18, 24, 30
7.Write the first five multiples of 3.
Answer: 3, 6, 9, 12, 15
8.Write the first five multiples of 10.
Answer: 10, 20, 30, 40, 50
Part C: HCF and LCM
9.Find the lowest common multiple (LCM) of 16 and 19.
Answer: 304
- Multiples of 16: 16, 32, 48, 64…
- Multiples of 19: 19, 38, 57, 76…
- Lowest common multiple = 304
10.Find the lowest common multiple (LCM) of 34 and 13.
Answer: 442
- Multiples of 34: 34, 68, 102, 136…
- Multiples of 13: 13, 26, 39, 52…
- Lowest common multiple = 442
11.Find the lowest common multiple (LCM) of 16 and 17.
Answer: 272
- Multiples of 16: 16, 32, 48, 64…
- Multiples of 17: 17, 34, 51, 68…
- Lowest common multiple = 272
12.Find the lowest common multiple (LCM) of 39 and 22.
Answer: 858
- Multiples of 39: 39, 78, 117, 156…
- Multiples of 22: 22, 44, 66, 88…
- Lowest common multiple = 858
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