πagarwalmath · 5th grade · Common Core 6.NS.B.4
🔗 Factors in common
Greatest common factor and least common multiple (and prime factorization)
Name: ______________________Date: ____________
1Which number is a factor of both 15 and 9?
- A10
- B3
- C5
- D6
2Which number is a factor of both 10 and 25?
- A2
- B11
- C5
3Which number is a factor of both 12 and 10?
- A2
- B3
- C4
- D11
4Which number is a factor of both 30 and 25?
- A7
- B8
- C5
- D2
5Which number is a factor of both 20 and 15?
- A4
- B2
- C5
- D12
6Which number is a factor of both 10 and 6?
- A2
- B6
- C11
7Which number is a factor of both 20 and 8?
- A4
- B7
- C11
- D10
8Which number is a factor of both 15 and 35?
- A11
- B8
- C5
- D6
9Which number is a factor of both 3 and 21?
- A9
- B3
- C42
- D12
10Which number is a factor of both 16 and 20?
- A2
- B9
- C7
- D6
11Which number is a factor of both 10 and 12?
- A7
- B2
- C9
- D11
12Which number is a factor of both 5 and 20?
- A40
- B5
- C7
- D12
Answer key: Factors in common
- 1. B (3)
- 2. C (5)
- 3. A (2)
- 4. C (5)
- 5. C (5)
- 6. A (2)
- 7. A (4)
- 8. C (5)
- 9. B (3)
- 10. A (2)
- 11. B (2)
- 12. B (5)
Practice this lesson online with games that adjust to your child: agarwalmath.com/math/5th-grade/preview-factors