This is a free preview. For full access
The Number System: Adding and Subtracting Rational Numbers
Why the Addition and Subtraction Rules Work
Description
Subject: Math
Chapter: Adding and Subtracting Rational Numbers
Show More
Transcript
You are playing a game and to help visualize your score, imagine it shown on a number line with 0 at the center.
On a number line, adding positive numbers moves you to the right, while adding negative numbers moves you to the left. Also, subtracting a number can be rewritten as adding its opposite, or additive inverse.
You earn 20 p...
Show More