Adding, Subtracting, Multiplying and Dividing Integers

Positive + Positive = Positive

Negative + Negative = Negative

Subtracting a Negative is the same as adding:
8 - (-3) = 8 + 3 = 11

The sum of a negative and a positive:
Use the sign of the large number and then subtract:

Example 1
8 + (-12) = -4

Example 2

(-7) + 17 = 10

Example 3

7 + (-3) = 4

Example 4

18 + (-20) = -2

Positive x Positive = Positive

Negative x Negative = Negative

Positive x Negative = Negative

Negative x Positive = Negative

Positive ÷ Positive = Positive

Negative ÷ Negative = Positive

Negative ÷ Positive = Negative

Positive ÷ Negative = Positive