Unit 5 Lesson 2 - Changing Temperatures

On Sunday the high temperature was 83 degrees. By Sunday night the temperature has dropped 32 degrees. Which expression could be used to determine the new temperature?

• 83 - 32

• 32 - 83

• 51 - 32

• 83 + 32

What is the final temperature if it starts at -5 degrees and gets 10 degrees warmer?

What is the final temperature if it starts at 30 degrees and gets 40 degrees colder?

What is the final temperature if it starts at -10 degrees and gets 10 degrees colder?

What is the final temperature if it starts at 25 degrees and gets 15 degrees warmer?

On Tuesday the low temperature was -3 degrees. By Tuesday midday the temperature had risen 28 degrees. Which expression could be used to determine the new temperature?

• -3 + 28

• -3 - 28

• 28 + 3

• 28 - (-3)

Which expression is illustrated on this number line?

• 40 - 10

• 40 + 50

• 40 + 10

• 40 - 50

Which expression is illustrated on this number line?

• -20 - 15

• -20 + 15

• -35 + 15

• 15 + 35

Which expressions is illustrated on this number line?

• 35 + 5

• 40 - 5

• 40 + 5

• 35 - 40

Which expression is illustrated on this number line?

• 80 + 0

• 40 + 40

• 40 - 0

• 40 - 40