The temperature was 2 degrees at the beginning of the month and then dropped 8 degrees in the end of the month. What signed number represents the change in temperature that month?
A) +6
B) -6
C) +10
D) -10

Question

Quizplus · Accepted Answer

The change in temperature is calculated by subtracting the ending temperature from the beginning temperature. So the change in temperature is 2 - (-8) = 10, which is a decrease of 10 degrees. Since the temperature decreased, the sign of the answer is negative. Therefore, the best choice is B, -6, which represents the decrease of 10 degrees with a negative sign.

The Temperature Was 2 Degrees at the Beginning of the Month