Solving Problems with Integers

The temperature was 98 degrees last Friday. Wednesday it was 24 degrees cooler. Which expression represents the relationship in the temperature between Friday and Wednesday?

• (-98) + (-24)

• -98 + - 24

• 98 + 24

• 98 + (-24)

In City A the temperature between 8 am and 9 am was - 12 degrees. It increased 8 degrees between 9 am and 10 am. What was the temperature at 10 am?

• 4 degrees

• -4 degrees

• 20 degrees

• -20 degrees

A submarine was 1250 meters below the surface of the water. It rose 750 meters. What value represents its position relative to the surface after rising?

• -500 meters

• 500 meters

• 750 meters

• 1250 meters

At sunrise, the outside temperature was 1° below zero. By lunch time, the temperature rose by 17° and then fell by 4° by night. What was the temperature at the end of the day? 

• 14°

• 13°

• 12°

• 11°

The price of jeans was reduced $6 per week for 7 weeks.  By how much did the price of the jeans change over the 7 weeks?

• 42

• -42

• 20

• -20

If I am subtracting integers, I need to change the problem to addition by ​ ​ (a)   ​ the ​ (b)   ​

• opposite

• subtracting

• same sign

• adding

A hike starts at an elevation 30 meters below sea level and ends at a point 9500 meters higher than the starting point. How high would you be at the end of the hike?  

• 9470

• -9470

• 9530

• -9530

A submarine is submerged at 20 feet below the surface. The submarine is now  descending at a rate of 120 feet per minute. Which integer represents the position of the submarine after 3 minutes?

• • -20 feet below the surface

• -380 feet below the surface

• -360 feet below the surface

Match the following

• -1

• 1 - 2

• 1

• 5 + (-3)

• 2

• 1 - 4

• 12

• 2 - (-10)

• -3

• -4 + 5

Match the following with the correct operation and sign of the answer.

• subtract, positive

• -717 + 927

• add, negative

• -762 + (-481)

• add, positive

• -1239 + 904

• subtract, negative

• 3 + 5