Adding, Subtracting, Multiplying, and Dividing Whole Numbers

(-40)÷4+11

• 1

• -21

• 21

• -1

-7 x 4

• 24

• 28

• -28

• -24

-7 - 2

• -9

• 9

• 5

• -5

-7(10)=

• 70

• 700

• -70

• -700

You wrote two checks for $30 each. Then, you withdrew $35. Finally, you deposited $20. What was the overall change in your account?

• $75

• $-55

• $5

• $-75

Answer the following:

12 + (-3) =

• 15

• -15

• 9

• -9

What is the rule when adding integers? For example: 13 + (-1) =

• If the signs are the same, add and keep the sign. If the signs are different, subtract and keep the sign of the larger whole number.

• A negative times a negative equals a positive.

• Same, Change, Change

• A negative divided by a positive equals a negative.

What sign would your answer have if you multiply a negative by a negative? For example: -9(-9) =

• Positive

• Negative

What would your answer by when you multiply two numbers with different signs? For example: -5(8) =

• Positive

• Negative

True or False: The answer to the equation -10(-5) is positive.

• True

• False