Math Antics
Adding & Subtracting Integers
Two simple rules plus a number-line strategy for every case.
Watch on YouTubeUse the number line and two key rules to combine positive and negative numbers.
Read this first — it covers the idea in plain language with a worked example.
Adding a positive number moves you right; adding a negative number moves you left. Subtracting flips the direction.
Simplify -4 + 9 - (-2).
Watch out
When two numbers have different signs, subtract their absolute values and keep the sign of the larger one.
Watch the main video, then check the second take if you want another explanation.
Two simple rules plus a number-line strategy for every case.
Watch on YouTubeTry a worksheet or work through some problems before the quiz.
A couple of questions to make sure this topic stuck. Retake as many times as you want.
Adding & Subtracting Integers
What is -7 + 3?