# Lesson 6

Represent Numbers in Different Ways

### Lesson Purpose

The purpose of this lesson is for students to represent numbers using unit form, base-ten numerals, expanded form, and words.

### Lesson Narrative

In previous lessons, students learned different ways that can be used to represent numbers.

In this lesson, students are introduced to one more way to represent numbers, that is, using words. They gain more experience with numbers represented in all the different ways they have worked with so far. In the lesson synthesis, students reflect on which representation has been most helpful in developing an understanding of the hundreds, tens, and ones in three-digit numbers.

- Engagement

- MLR7

### Learning Goals

Teacher Facing

- Read, write, and represent three-digit numbers, including number names.

### Student Facing

- Let’s represent numbers in different ways.

### Required Materials

Materials to Gather

### Required Preparation

Activity 1:

- Prepare an anchor chart for the launch showing:
- 253 represented with a base-ten diagram.
- This number has _____ hundreds, _____ tens, and _____ ones.
- The expanded form of this number is _____________________.
- The three-digit number is _____________________.

Activity 2:

- Create an anchor chart for the launch showing:
- 253 represented with a base-ten diagram
- This number has _____ hundreds, _____ tens, and _____ ones.
- The expanded form of this number is ______________________.
- The three-digit number is ________________.

### CCSS Standards

Addressing

### Lesson Timeline

Warm-up | 10 min |

Activity 1 | 15 min |

Activity 2 | 20 min |

Lesson Synthesis | 10 min |

Cool-down | 5 min |

### Teacher Reflection Questions

Reflect on how comfortable your students are asking questions of you and of each other. What can you do to encourage students to ask questions?

### Suggested Centers

- Greatest of Them All (1–5), Stage 1: Two-digit Numbers (Addressing)
- Mystery Number (1–4), Stage 1: Two-digit Numbers (Supporting)