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Problem 57

Algebra Difficulty 1.1 Multiple choice CEMC Gauss (Grade 7) · Canada · 2020

In the morning, the temperature was $-3\degree$ C. In the afternoon, the temperature was $5\degree$ C. By how many degrees Celsius did the temperature increase?

Pick one

Official solution

The increase in temperature equals the warmer afternoon temperature minus the colder morning temperature.

The difference between 5 and $-3$ is $5-(-3)=5+3=8$ .
The temperature increased by $8\degree$ C.

Source: CEMC, University of Waterloo, licensed CC-BY-NC-4.0. Statement reproduced verbatim; metadata (topic, difficulty, ordering) added by this project.