Worksheets are below. How to add, subtract, multiply and divide with positive and negative numbers.

**Adding Rules:**

Positive + Positive = Positive 5 + 4 = 9

Negative + Negative = Negative (- 7) + (- 2) = - 9

Sum of a negative and a positive number

Use the sign of the larger number and subtract

(- 7) + 4 = -3

6 + (-9) = - 3

(- 3) + 7 = 4

5 + ( -3) = 2.

**Subtracting Rules:**

Negative - Positive = Negative (- 5) - 3 = -5 + (-3) = -8

Positive - Negative = Positive + Positive =

Positive 5 - (-3) = 5 + 3 = 8

Negative - Negative = Negative + Positive =

Use the sign of the larger number and subtract

(Change double negatives to a positive shown in red.)

(-5) - (-3) = ( -5) + 3 = -2

(-3) - ( -5) = (-3) + 5 = 2

**Multiplying Rules**

Positive x Positive = Positive 3 x 2 = 6

Negative x Negative = Positive (-2) x (-8) = 16

Negative x Positive = Negative (-3) x 4 = -12

Positive x Negative = Negative 3 x (-4) = -12

**Dividing Rules**

Positive ÷ Positive = Positive 12 ÷ 3 = 4

Negative ÷ Negative = Positive (-12) ÷ (-3) = 4

Negative ÷ Positive = Negative (-12) ÷ 3 = -4

Positive ÷ Negative = Negative 12 ÷ (-3) = -4

All worksheets are created by experienced and qualified teachers. Send your suggestions or comments.