Adding Integers

Adding Integers Lesson Closure and Exit Ticket

Multiple Choice

Charlie's freezer is set to -20⁰ C but he accidentally left the door open and the temperature rose by 13⁰C. Which option has the correct equation AND solution?

• -13 + 20 = 7

• -20 + 13 = -7

• -20 + 13 = 7

• -13 + (-20) = -36

Open Ended

A submarine was 400 feet below sea level. If it ascended 150 feet above sea level, how far above or below sea level is it now?