Adding and Subtracting Integers

Adding and Subtracting Integers

by Sara McCullough

Multiple Choice

Which of the following represents 18 feet below sea level?

• -18

• 18

• l 18 l

• l -18 l

Multiple Choice

Which of the following represents diving down 5 feet?

• 5

• l -5 l

• -5

• l 5 l

How would I represent the following?​

​A diver is located 18 feet below sea level. He swims down another 5 feet. What integer represents his location relative to sea level?

​How would I represent the following? *Write it on your white board or piece of paper.

​Danny wrote a check for $25 and then made a deposit of $45. What integer represents the change in Danny's bank account?

​The temperature at the beginning of the day was 9 degrees. The temperature dropped 10 degrees after the sun went down. What was the temperature after the sun went down?

​Write a number sentence to represent this problem.

Multiple Choice

Think carefully: The temperature at the beginning of the day was 20 degrees. After the cold front came through, the temperature was -10 degrees. What is the DIFFERENCE in the 2 temperatures?

• 20 - 10 = 10

• 20 + ( 10 ) = 30

• 20 - (-10) = 30

• 20 + 10 = 10

Multiple Choice

Solve: -56 - (-45) =

• -11

• 11

• 101

• -101

Multiple Choice

Solve: 112 + (-34) =

• 78

• -78

• 146

• -146

Multiple Choice

Solve: -60 + (-79) =

• 139

• -19

• -139

• 19

Multiple Choice

Try this! You can do it!

55 + (-20) + 35 =

• 110

• -70

• 0

• 70

Multiple Choice

-12 - (-10) - 6

• -28

• -8

• -16

• 4