Practice Greatest Common Factor in Math
Use these practice problems to test your method after reviewing the concept explanation and worked examples.
Quick Recap
The greatest common factor (GCF) of two or more numbers is the largest positive integer that divides each of them evenly, with no remainder. It is also called the greatest common divisor (GCD).
The biggest 'piece' size that fits evenly into two numbers—like the largest tile that covers both a 12-unit and 18-unit floor.
Example 1
easyFind the GCF of 48 and 36.
Example 2
mediumFind the GCF of 84, 126, and 210.
Example 3
easyFind the GCF of 60 and 45.
Example 4
easyA teacher has ribbons of lengths 24 cm and 36 cm. She wants to cut them into the longest equal pieces with no leftover. How long should each piece be?