Which of the following is a real-world problem that could be solved with the sum −22+9?

Question

A. The temperature was negative 22 degrees F yesterday. Today the temperature is 9 degrees F. How much warmer is it today compared with yesterday?

B. Layla earned $22 babysitting last weekend. Today she received $9 from her grandmother. How much money does she have all together?

C. A scuba diver is 22 feet below sea level. Their friend is standing on a diving board 9 feet above sea level. What is the vertical distance between the scuba diver and their friend?

D. Quinn is playing a card game with his friends. He had negative 22 points at the start of his turn, but just got 9 points. How many points does he now have?

Answer 1

The correct option that represents a real-world problem that can be solved with the sum −22 + 9 is:

A. The temperature was negative 22 degrees F yesterday. Today the temperature is 9 degrees F. How much warmer is it today compared with yesterday?

This scenario involves finding the difference in temperature between two values, one of which is negative, making it appropriate for the operation of adding a negative number. In this case, the solution would represent the change in temperature and effectively shows how much warmer it is today compared to yesterday.