Adding and Subtracting Negative Numbers with Temperature, Elevation, and Money

The temperature dropped 2 °F every hour for 6 hours. 

Which of the following BEST describes the total change in temperature over the 6 hours?

• -12 degrees

• -3 degrees

• 3 degrees

• 12 degrees

Which of the following situations would have a balance of 0?

• I withdrew $30 from my checking account, then deposited $30 into my account.

• Kaleb lost 10 yards on a football play, then gained back 5 yards on the next play.

• At the beginning of the day, Aaron drank 1/2 quart of water. At the end of the day, he was left with 1/4 quart of water in the bottle.

• A submarine was traveling 150 feet below sea level, then increased its depth by 50 feet.

Linda deposited $200 into her bank account. She then wrote a check for $150. Which of the following represents the changes in the value of Linda’s account?

• $150 -$200

• $200 - $150

• $200 + $150

Bob had a balance of -$500 in his bank account. He deposited $500 in his account, what is Bob’s new balance?

• $12

• $100

• $0

• $1

A mountain climber climbed down a cliff 50 feet at a time. He did this 5 times in one day. What was the overall change in his elevation?

• He climbed down 250 feet. (-250 feet)

• He climbed up 250 feet. (+250)

If a hiker climbs up a hill for 300 meters and then descends 120 meters, what is the hiker's net elevation gain?

• 180 meters

• 420 meters

• -180 meters

• 0 meters

The air temperature in the North Pole in the morning was 3 degrees Celsius.  By 10:00am the temperature dropped 12 degrees.  By noon the temperature had gone up 5 degrees.  At 3:00pm the temperature went up 9 degrees.  By nightfall the temperature had dropped 16 more degrees.  What was the temperature at the North Pole at nightfall?

• 11 degrees

• 0 degrees

• -11 degrees

• -9 degrees

The temperature on a cold winter day starts out at 10 degrees, but it drops rapidly 24 degrees due to a strong cold front moving in.  What is the current temperature?

• 14

• 34

• -14

• -34

I had $-25 in my account.  I deposited $70 into my account.  How much money do I have now?

• $105

• $-45

• $45

• -$105

-44 - (-19)

• -25

• 25

• 63

• -63