C.7
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Greatest Common Factor
Skill C.7 · Factors, multiples & primes · ★★☆ Medium · Quarter 1
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Find each GCF.
Example
Think: Factors of 24: 1, 2, 3, 4, 6, 8, 12, 24. Factors of 36: 1, 2, 3, 4, 6, 9, 12, 18, 36. The greatest shared one is 12.
- 1Find the greatest common factor (GCF) of 27 and 45.
- 2Find the greatest common factor (GCF) of 30 and 15.
- 3Find the greatest common factor (GCF) of 70 and 91.
- 4Find the greatest common factor (GCF) of 90 and 70.
Answer Key
C.7 Greatest Common Factor · ★★☆ Medium
- 19
- 215
- 37
- 410