Adding and Subtracting Negative Numbers with Temperature and Elevation

Marie and Nancy are scuba diving. Marie descends to a depth of 15 feet below sea level. Nancy descends to a depth of 22 feet below sea level. What is the difference in their depths?

• 13 ft

• 37 ft

• 7 ft

• -13 ft

• -7

The temperature on Sunday was -15^o C. The temperature on Monday was 12 degrees less than the temperature on Sunday. What was the temperature on Monday?

• -27

• -3

• 3

• 27

A football team gained 9 yards on one play and then lost 22 yards on the next. Write a sum of integers to find the overall change in field position.

• -9 + (-22) = -13

• 9 + (-22) = 13

• 9 + (-22) = -13

• none

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 average daily temperature in Denton went from -8°F in January to 43°F in March. What was the change in the average daily temperature from January to March?

• 35°

• 51°

• -35°

• -51°

Define "Positive Number"

• A number that is greater than 0

• A whole number

• When you add

• A positive or negative whole number

Define "Negative Number"

• A number greater than zero

• A number and its opposite combine to equal 0

• A number less than zero

• Zero

What does the word "sum" mean?

• Add

• Subtract

• Multiply

• Divide

What does the word "difference" mean?

• Add

• Multiply

• Subtract

• Divide

1.  Rosa was hiking near the Dead Sea.  She began her hike at an elevation of -600 feet and ended the hike at 92 feet. What was the change in her elevation?

• she hiked up 508 feet
• she hiked down 508 feet
• she hiked up 692 feet
• she hiked down 692 feet