Algebra › Adding negatives

CCSS.MATH.CONTENT.7.NS.A.1C
Understand subtraction of rational numbers as adding the additive inverse, p – q = p + (–q). Show that the distance between two rational numbers on the number line is the absolute value of their difference, and apply this principle in real-world contexts.
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.

LTI launch URL (help)
https://schoolyourself.org/page/lti/sy/algebra/adding-negatives