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Match the integer addition problem with the graph.

• 4 + (-5) = -1
• -5 + 4 = -1
• 4 + (-5) = 0
• None of these

Look at the number line.

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

Match the integer addition problem with the graph.

• 6 + (-2) = 6
• -2 + 6 = 0
• 6 + (-2) = 4
• None of these.

Use the counters to find the sum of the integers. 

• -5
• -7
• 5
• 7

• 7
• 5
• -7
• -5

Use the counters to find the sum of the integers. 

• 17
• -2
• -1
• -17

(-9) + 9

• 18
• -18
• 0
• 81

3 + -7

• 10
• 4
• -10
• -4

-9 + (-5)

• -14
• 14
• -4

-3 + 12

• -15
• -9
• 9
• 15