# What is the common denominator for 16 and 20?

May 3, 2018

The common denominator of 16 and 20 is 4. When simplified, the fraction becomes $\frac{4}{5}$.

#### Explanation:

Factor tree of 16:

1 - 16
2 - 8
4 - 4
8 - 2
16 - 1

Factor tree of 20:

1 -20
2 - 10
4 - 5
5 - 4
10 - 2
20 - 1

When simplified:

$\frac{16}{20}$ $/ 4$ on both sides = $\frac{4}{5}$