Adding and Subtracting Negative Integers

Use the number line to find the sum.
3 + (-12) =

• -9

• 9

• -15

• 15

Use the number line to find the sum.
-4 + (-5) =

• -9

• 9

• -1

• 1

-14 + (-3)

• -17

• 11

• -11

• 17

-9 + (-5)

• -14

• 14

• -4

(-8) + (-23) =

• -31

• 31

• 15

• -15

-20 + (-11)

Mathematical Equivalence

OFF

Solve the problem.
-2 + (-5)

• 7

• -7

• -3

• 3

Negative Integer • Negative Integer = 

• Positive Integer

• Negative Integer

• It depends on which number has the largest absolute value.

What equation is modeled?

• 6 + -6 = -6

• -6 + 6 = 12

• 6 + -12 = -6

• -12 + 6 = -6

When you add opposites, what do you get?

• 0

• A negative number

• Attraction

• You cannot add opposites