Greatest Common Factor by Listing Worksheet with Answer Key

What's on the worksheet

1. Find the greatest common factor of each pair or group by listing factors.
   14 and 2130 and 4232 and 5645 and 6328 and 45
2. Simplify each fraction in one step by dividing by the GCF.
   \dfrac{36}{90}\dfrac{56}{98}\dfrac{75}{120}
3. Word problem: fill identical party bags with 55 glow sticks and 77 whistles.
4. Word problem: the most singers per row for 10 sopranos and 25 altos.
5. Word problem: the largest square felt patch that covers a 96 cm by 144 cm banner.
6. Find every pair of numbers between 20 and 50 with a GCF of 12.
7. Find what went wrong in Isaac's GCF of 36 and 48.