Adding, Subtracting, Multiplying Rational Numbers

-14 - (-8)

• -22

• 6

• 22

• -6

When you add two negatives, you:

• add them and keep the sign

• subtract them and take the sign of the bigger number

When you add a positive and a negative, you:

• add them and keep the sign

• subtract them and take the sign of the bigger number

When you subtract:

• You change subtraction to addition and then add

• You add them together and keep the sign

• You subtract and keep the sign of the bigger number

• You change subtraction to addition, change the sign of the second number, and then follow the addition rules.

Solve the problem.
27 + (-83)

• -56

• 110

• 56

• -110

-40 + 15.05

• 55.05

• 24.95

• -24.95

• 14.65

Multiply.

-3 x 2

• -1

• -6

• -5

• 6

Determine the product: -2.14 x (5.8)

• -12.412

• 10.45

• 12.412

• -10.45

When multiplying or dividing a NEGATIVE and NEGATIVE number your result will be...

• POSITIVE

• NEGATIVE

• DEPENDS ON WHICH NUMBER IS LARGER.