Factors and multiples

Factors, multiples, primes, and the greatest common factor and least common multiple that come out of them.

5 sheets · 50 questions · one answer key · 7 pages

Recommended for grades 4–6

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Factors Sheet 1 of 5

List the factorsNumbers to 40

Name: Date:

List all the factors of each number.

120 →

231 →

325 →

47 →

536 →

633 →

716 →

840 →

94 →

106 →

MultiplesNumbers to 40

Name: Date:

List the first five multiples of each number.

14 →

23 →

313 →

433 →

519 →

635 →

726 →

88 →

936 →

1024 →

Prime or compositeNumbers to 50

Name: Date:

Circle whether each number is prime or composite.

18PrimeComposite

216PrimeComposite

313PrimeComposite

427PrimeComposite

543PrimeComposite

619PrimeComposite

749PrimeComposite

830PrimeComposite

945PrimeComposite

107PrimeComposite

Greatest common factorNumbers to 40

Name: Date:

Find the greatest common factor (GCF) of each set of numbers.

19, 12 →

212, 28 →

310, 35 →

49, 15 →

515, 35 →

620, 28 →

712, 18 →

84, 14 →

96, 14 →

1024, 30 →

Least common multipleNumbers to 30

Name: Date:

Find the least common multiple (LCM) of each set of numbers.

112, 16 →

26, 8 →

310, 25 →

46, 9 →

58, 20 →

612, 20 →

76, 10 →

84, 6 →

920, 25 →

1015, 25 →

Power Pack · Factors and multiplesAnswer key

Factors

1. 20 → 1, 2, 4, 5, 10, 202. 31 → 1, 313. 25 → 1, 5, 254. 7 → 1, 75. 36 → 1, 2, 3, 4, 6, 9, 12, 18, 366. 33 → 1, 3, 11, 337. 16 → 1, 2, 4, 8, 168. 40 → 1, 2, 4, 5, 8, 10, 20, 409. 4 → 1, 2, 410. 6 → 1, 2, 3, 6

Multiples

1. 4 → 4, 8, 12, 16, 202. 3 → 3, 6, 9, 12, 153. 13 → 13, 26, 39, 52, 654. 33 → 33, 66, 99, 132, 1655. 19 → 19, 38, 57, 76, 956. 35 → 35, 70, 105, 140, 1757. 26 → 26, 52, 78, 104, 1308. 8 → 8, 16, 24, 32, 409. 36 → 36, 72, 108, 144, 18010. 24 → 24, 48, 72, 96, 120

Prime or composite

1. 8 → Composite (2 × 4)2. 16 → Composite (2 × 8)3. 13 → Prime4. 27 → Composite (3 × 9)5. 43 → Prime6. 19 → Prime7. 49 → Composite (7 × 7)8. 30 → Composite (2 × 15)9. 45 → Composite (3 × 15)10. 7 → Prime

Greatest common factor

1. 9, 12 → 32. 12, 28 → 4

Power Pack · Factors and multiplesAnswer key

Greatest common factor

3. 10, 35 → 54. 9, 15 → 35. 15, 35 → 56. 20, 28 → 47. 12, 18 → 68. 4, 14 → 29. 6, 14 → 210. 24, 30 → 6

Least common multiple

1. 12, 16 → 482. 6, 8 → 243. 10, 25 → 504. 6, 9 → 185. 8, 20 → 406. 12, 20 → 607. 6, 10 → 308. 4, 6 → 129. 20, 25 → 10010. 15, 25 → 75

Factors and multiples

What is in the pack

The number track

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