Main content

## 3rd grade

### Course: 3rd grade > Unit 3

Lesson 3: Strategies for adding two and three-digit numbers# Add on a number line

## Problem

Stuck?

Stuck?

If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains ***.kastatic.org** and ***.kasandbox.org** are unblocked.

Main content

Stuck?

Stuck?