PRE-ALGEBRALesson 21 of 171
Students learn to add integers using a number line, where a positive integer represents a move to the right on the number line, and a negative integer represents a move to the left on the number line. For example, to add -3 + 7, start at zero on the number line, then move 3 units to more...
Elementary / Middle
High School Math
*Also referred to as Elementary Algebra or Beginning Algebra.
Search our lessons