Add and Subtract Integers with Negatives

Negative + Negative = ??

• Positive

• Negative

• It Depends

For 2-(-2).... the two negatives turn this equation into...

• 2-2

• 2+2

• 2+-2

What is the rule for adding two negatives?

• Add and Keep

• Absolute value and subtract

In Buffalo, New York, the temperature was -14°F in the morning. If the temperature dropped 7°F, what is the temperature now?

• -7°F

• -21°F

• 7°F

• 21°F

Find the solution:

-6 + (- 4) =

Find the solution:

13 + (- 2) =

Find the solution:

-50 + 30

When you have the SAME number of POSITIVES and of NEGATIVES, you can cancel them out by making a

" ________ ________ "

EXAMPLE: 5 + (-5)

Which pattern applies to this problem: 13 + (- 2) =

• Same sign: ADD and KEEP

• Different sign: SUBTRACT, KEEP the SIGN of the one with MORE

• This problem is impossible

Which pattern applies to this problem:

• Same sign: ADD and KEEP

• Different sign: SUBTRACT, KEEP the SIGN of the one with MORE

• This problem is impossible