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 20 and 16?
- A12
- B2
- C3
- D6
2Which number is a factor of both 12 and 4?
- A5
- B2
- C8
- D9
3Which number is a factor of both 20 and 25?
- A11
- B3
- C21
- D5
4Which number is a factor of both 5 and 35?
- A12
- B11
- C6
- D5
5Which number is a factor of both 2 and 6?
- A5
- B2
- C4
- D7
6Which number is a factor of both 15 and 18?
- A7
- B3
- C6
- D16
7Which number is a factor of both 6 and 8?
- A11
- B9
- C2
- D10
8Which number is a factor of both 9 and 12?
- A3
- B2
- C6
- D12
9Which number is a factor of both 10 and 25?
- A12
- B3
- C8
- D5
10Which number is a factor of both 30 and 24?
- A9
- B3
- C12
- D48
11Which number is a factor of both 16 and 20?
- A40
- B3
- C7
- D4
12Which number is a factor of both 6 and 9?
- A2
- B12
- C4
- D3
Answer key: Factors in common
- 1. B (2)
- 2. B (2)
- 3. D (5)
- 4. D (5)
- 5. B (2)
- 6. B (3)
- 7. C (2)
- 8. A (3)
- 9. D (5)
- 10. B (3)
- 11. D (4)
- 12. D (3)
Practice this lesson online with games that adjust to your child: agarwalmath.com/math/5th-grade/preview-factors