### Common Core State Standard

### 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.

*CCSS: 7.NS.A.1b, 7.NS.A.1c*

The numbers are rioting. Help Zero get them under control in this mathematical platformer. Stuck? Click on "Walkthrough" in the game to see our video walkthrough.