Add and Subtract Integers

Add Integers

100

-12 + 15

3

200

-24 + 20

-4

300

-14 + (-10)

-24

400

-36 + (-45)

-81

500

-15 + 10 + (-12)

-17

Subtract Integers

100

-3 - 10

-13

200

-15 - 25

-40

300

- 23 - (-30)

7

400

15 - 18

-3

500

-24 - 10 - (-12)

-22

Add/Subtract

100

-45 - (-10)

-35

200

32 + (-40)

-8

300

-15 + (-28)

-43

400

-12 + 4 - (-10)

2

500

13 - 20 + (-5) 

-12

Word Problems

100

It will be – 12º tonight. The weatherman predicts it will be 25º warmer by noon tomorrow. What will the temperature be by noon tomorrow?  

13 degrees

200

The average temperature at the South Pole is – 45º F. The average temperature on the Equator is 92º F. How much warmer is the average temperature on the Equator than at the South Pole?

137 degrees

300

An elevator is on the twentieth floor. It goes down 11 floors and then up 5 floors. What floor is the elevator on now?

14th floor

400

In Buffalo, New York, the temperature was -14 degrees F in the morning. If the temperature dropped 7 degrees F, what is the temperature now?

-21 degrees

500

A submarine was situated 800 feet below sea level. If it ascends 250 feet, what is its new position?

550 feet below sea level or -500 feet