Add Subtract Negatives

12 - (-12)

• 24

• -24

• 0

• -144

Which integer represents a withdrawal from your bank account of $50

• -$50

• $50

• +$50

How do we subtract negative integers?

• Add the Additive Inverse

• Keep Change Change

• We cannot subtract negatives from negatives.

• If we subtract negatives we get more positives.

16 - 24

• 8

• -8

• 40

• -40

24 - 16

• 40

• -8

• 8

• -40

During the week Jimmy spent $45 eating out, gained $55 mowing lawns and spent $15 on gas. What was Jimmy's change in dollars at the end of the week? HINT: The two amounts of money he spent should be negative amounts and the money he gained is a positive amount. Add two negatives and one positive to get the answer.

• $5

• - $5

• - $15

• $15

-16 - (-16)

• 0

• 32

• -32

• none of these options

Adding a Negative is the same thing __________ a Positive.

• "adding" which means (5 + -3) is the same as (5 + 3)

• "subtracting" which means (5 + -3) is the same as (5 - 3)

• "Multiplying by" which means (5 + -3) is the same as ( 5 x 3)

• "Dividing by" which means (5 + -3) is the same as (5/3)

Subtracting a Negative is the same thing __________ a Positive.

• "adding" which means 5 - (-3) is the same as 5 + 3

• "subtracting" which means 5 - (-3) is the same as 5 - 3

• "Multiplying by" which means 5 - (-3) is the same as ( 5 x 3)

• "Dividing by" which means 5 - (-3) is the same as (5/3)

-6 + 6 =

• 12

• -12

• 0

• 36