Modeling Adding and Subtracting Integer Operations

• 4 + 2 = 6
• -4 + 2 = -2
• 4 + (-2) = 2
• -4 + (-2) = -6

• 1 + 5 = 6
• -1 + 5 = 4
• 1 + (-5) = -4
• -1 + (-5) = -6

• 8 + (-5) = 3
• -8 + 5 = -3
• 8 + 5 = 13
• -8 + (-5) = -13

• -5 + 3 = -2
• 5 + (-3) = 2
• 5 + 3 = 8
• -5 + (-3) = -8

27 + (-14)

• 13

• 15

• -13

• -15

Which of the following expressions best represents the model?

• -6 + 3

• 3 - 6

• -6 - (-3)

• -3 - 6

What problem and answer are modeled?

• -15 - 5 = -20

• -5(4) = -20

• -10(2) = -20

• -15 + 5 = -10

(-13) + 8 =

• 4

• -5

• -4

• 5

Match

• 3

• -3 + 14

• -216

• 72(-3)

• 12

• 24 - (-5)

• 29

• 18 + (-6)

• 11

• -7 - (-10)

-12 - 12 =

• 0

• -24

• -20

• 24