Lesson objective: Relate understanding of comparing numbers to ordering numbers.

This lesson provides an opportunity for students to apply their knowledge and understanding of comparing three-digit numbers to a real-life situation. Students are asked to put five numbers in order from greatest to least.

Key Concept students will use:

- Understanding the structure of the place value system allows us to determine whether one number (within 1000) is greater than, less than, or equal to another number.

Skills students will use:

- model numbers using base ten sketches
- writing numbers in expanded form
- comparing numbers

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

**Key vocabulary: **

- base ten
- expanded form
- greatest
- least

**Special materials needed:**

- base ten blocks (optional)