Lesson objective: Compare three-digit numbers using the structure of the place value system.

This lesson helps to build fluency with comparing three-digit numbers. Sketches of base ten blocks and expanded form are used here because they support an understanding of the value of each digit in a three-digit number.

Students engage in Mathematical Practice 7 (Look for and make use of structure) as they use patterns in the place value system to compare numbers.

**Key vocabulary:**

- equal/equivalent
- expanded form
- greater
- less
- value

**Special materials needed:**

- base ten blocks
- place value mat (optional)