Adding, Subtracting, Multiplying, and Dividing Integers

A climber is at an altitude of 533 feet. He descends until he reaches 10 feet below sea level. How many feet did the climber descend?

• 523 feet

• 543 feet

• 0 feet

• 500 feet

What is -5(7)

• 2

• -35

• 35

• -2

5 divided by 10 is

• .5

• -2

• 2

• -.5

-37 - 72

• 109

• -35

• 35

• -109

A negative times a negative is always a positive

• Always

• Sometimes

• Never

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.

Re-write the equation below to show what it would look like after applying the rule for subtracting integers (Same, Change, Change):

-10 - 5

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

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

• Positive

• Negative