Adding and Subtracting Integers

Which equation is represented by the model below?

• -5 + 3 = -2

• 5 + (-3) = 2

• 5 + 3 = 8

• -5 + (-3) = -8

Which equation is represented by this model?

• -4 + (-3) = -7

• -4 + 3 = -1

• 6 + 1 = 7

• 4 + (-3) = 1

3 + -7

• 10

• 4

• -10

• -4

15 + -11 =

• 4

• -26

• -4

• 26

How do you know that 5 and -5 are additive inverses (opposites)?

• Because they both have a 5

• They are the same distance from 0 and on opposite sides of 0

• Because they are the same

• They both are on a number line

What expression does the model show?
Red = +
Yellow = -

• -7 + 4

• 7 + (-4)

• 7 + 4

• -3 + 0

-20+(-11)

• 31

• 9

• -9

• -31

(-9) + 9

• 18

• -18

• 0

• 81

(- 9) + 7

• -2

• 2

• 16

• -16

5 - (-12)

• -7

• 7

• 17

• -17