Adding and Subtracting Integers with Models

Q1. What is the value of x?

• 1) 9

• 2) 10

• A) -9

• B) -10

What problem is shown with this number line?

• 3 - 2

• 2 - 3

• 3 - (-2)

• 5 - 2

-14 + (-3)

• -17

• 11

• -11

• 17

-10 + 10

• 20

• 0

• -20

• 1,000,000

5 - 2

• 7

• 3

• -3

• -7

-7 - (-7)

• 14

• 0

• -14

• 1

What number line models 6 - 9?

• 
• 
• 
• 

Which addition expression is equivalent to 7 - (-3)?

• -3 + 7

• -7 + 3

• 7 + 3

• 3 + (-7)

Which equation represents this model?

• 5- 8= -3

• -3 - 2 = -5

• 3-8 = -5

• -3 + 5 = -2

You can change subtraction to addition if

• you change the second number to it's opposite

• you DO NOT change the second number