Adding Subtracting Multiplying Dividing Integer

9- (-9)

• -18

• 0

• 1

• 18

-9(9)=

• 81

• -81

• 18

• -18

-9 + 9 + 9

• -9

• 0

• 9

• none of the above

9 - 9 + (-9)

• -9

• 9

• 1

• -1

-9(9) + 9

• 72

• -10

• -72

• 10

What is -5(7)

• 2

• -35

• 35

• -2

5 divided by 10 is

• .5

• -2

• 2

• -.5

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.

Answer the following:

12 + (-3) =

• 15

• -15

• 9

• -9

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

• Positive

• Negative