What is the gcf of 24 and 40?

The greatest common factor (GCF) of 24 and 40 is 8. This is because 8 is the largest number that evenly divides both 24 and 40 without leaving a remainder.

To find the GCF of two numbers, you can list out all the factors of each number and find the largest number that is common to both lists.

Factors of 24: 1, 2, 3, 4, 6, 8, 12, 24 Factors of 40: 1, 2, 4, 5, 8, 10, 20, 40

The largest number that appears in both lists is 8, so the GCF of 24 and 40 is 8.