A Quick Guide To... Negative Numbers (In Addition and Subtraction) RAFS Education
It's quite simple. Really.
Before we start... Negative numbers! Any number with a negative in front of it!
In Addition: Add a positive and negative. -9+4 = -5 Add two negatives. -2+(-4) = -6
In Subtraction: Subtract a positive from a negative. -1-5 = -6 Subtract a negative and a negative. -4-(-43) = 39 *Turns to addition (-4+43)
We would add more to this, But we think you've got it.
Simple?
It better be.
Yes.

Negative Numbers 1