# Lesson 4

Write Three-digit Numbers

### Lesson Purpose

The purpose of this lesson is for students to use their understanding of place value to identify and write three-digit numbers.

### Lesson Narrative

In previous lessons, students learned that the three digits in a three-digit number represent amounts of hundreds, tens, and ones.

In this lesson, students build on this understanding to write three-digit numbers when the number or value of the hundreds, tens, and ones are shown in different orders. Throughout the lesson, students practice identifying and writing three-digit numbers using their understanding of place value.

- Engagement

- MLR8

### Learning Goals

Teacher Facing

- Read, write, and represent three-digit numbers using base-ten numerals.

### Student Facing

- Let’s represent three-digit numbers using base-ten numerals.

### Required Materials

Materials to Gather

### Required Preparation

### Lesson Timeline

Warm-up | 10 min |

Activity 1 | 20 min |

Activity 2 | 15 min |

Lesson Synthesis | 10 min |

Cool-down | 5 min |

### Teacher Reflection Questions

Why is it important for students to be able to connect different representations of three-digit numbers? How does the work of today’s lesson help students expand their understanding of place value to include a hundred as a unit?

### Suggested Centers

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