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14 terms

Rules for adding, subtracting, multiplying & dividing positive & negative integers

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

6 + (-9) = - 3

(- 3) + 7 = 4

5 + ( -3) = 2

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)

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

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

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

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

Positive ÷ Positive = Positive:

12 ÷ 3 = 4

Negative ÷ Negative = Positive:

(-12) ÷ (-3) = 4

Negative ÷ Positive = Negative:

(-12) ÷ 3 = -4

Positive ÷ Negative = Negative:

12 ÷ (-3) = -4