Negative Numbers: An Overview

Negative numbers introduction | Negative numbers and absolute value | Pre-Algebra | Khan Academy

Introduction to negative numbers

Math Antics - Adding & Subtracting Integers

How To Add And Subtract Negative Numbers

Adding and Subtracting - Negative Numbers

Learn Operations with Negative Numbers - Add, Subtract, Multiply, Divide

[Lesson 15, Fun Math] Making Sense of Negative Numbers

Adding and subtracting negative numbers | Pre-Algebra | Khan Academy