Grade 7 · The Number System

CCSS.MATH.CONTENT.7.NS.A.1

Apply and extend previous understandings of addition and subtraction to add and subtract rational numbers; represent addition and subtraction on a horizontal or vertical number line diagram.

Read this standard on the official Common Core site

Lessons that teach this standard

• Adding and Subtracting Integers

  How to add and subtract negative numbers using the number line, why subtracting is the same as adding the opposite, and how to handle two signs in a row.