Grade 7 · The Number System

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

Understand p + q as the number located a distance |q| from p, in the positive or negative direction depending on whether q is positive or negative. Show that a number and its opposite have a sum of 0 (are additive inverses). Interpret sums of rational numbers by describing real-world contexts.

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.