Ivan left home and turned off the heater.
Before turning off the heater, the temperature in the room was 25°C.
When Ivan arrived home from work that night, the temperature in the room was `\-\`2°C.
What was the change in temperature in the room? Write your answer as a directed number. (2 marks)
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Show Worked Solution
`text(Change in temperature) = (25 + 2) = 27text(° decrease)`
`:.\ text(Change in temperature) = -27text(°C)`