Adding and Subtracting Integers

What's 8+20?

• 12

• 26

• 28

• 18

What's 17+ (-19)?

• 2

• 37

• -37

• -2

What's -11+4?

• 7

• 15

• -7

• -15

What's (-7)+(-10)?

• 17

• 3

• -3

• -17

Rewrite the following subtraction problem as addition:     -2 - (-6)

• -2 + 6
• -2 + (-6)
• 2 - (-6)
• 2 + 6

Rewrite the following subtraction problem as addition:   -1 - 7

• -1 + 7
• 1 + 7
• -1 + (-7)
• 1 + (-7)

Rewrite the following subtraction problem as addition:     5 - 9

• 5 + 9
• -5 + 9
• -5 + (-9)
• 5 + (-9)

Use the counters to find the sum of the integers. 

• 17
• -2
• -1
• -17

Use the counters to find the sum of the integers. 

• -5
• -7
• 5
• 7

-8 - (-4) =

• 12
• -12
• 4
• -4