Main content

## Early math review

### Course: Early math review > Unit 4

Lesson 5: Word problems within 20# Addition and subtraction word problems 1

CCSS.Math: 1.OA.A.1

## 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

CCSS.Math: 1.OA.A.1

Stuck?

Stuck?