Decimals can be compared using **models**.

**Base ten blocks** can be used to compare decimals.

In this case, a **flat** represents **1**, a **rod** represents **0.1**, and a **unit** represents **0.01**.

The model on the left is made up of five rods, so it represents 0.5.

The model on the right is made up of two rods, so it represents 0.2.

The model on the left has more rods than the model on the right.

So, a comparison shown by the models is 0.5 > 0.2.