Adding and Subtracting Rational Numbers

-5.4 + 8.3

-8 - 11

-7.84 - 3.2

During the day, the temperature increases by 4.5 degrees.  At night, the temperature decreases by 7.5 degrees.  What is the overall change in temperature?

The temperature in Barrow, Alaska is -11 degrees Fahrenheit. The temperature in Dallas, Texas is 64 degrees Fahrenheit. What is the difference in temperature? (Do NOT label your answer.)

Bethany borrowed $22 from her friend. She then earned some money babysitting over the weekend, and was able to pay her friend back. Now Bethany has $33. How much money did Bethany earn babysitting over the weekend? (Do NOT label your answer.)

A shark was at a depth of -12 meters and then dives an additional 13.67 meters. What is the new depth of the shark? (Do NOT label your answer.)