The temperature is 2 degrees and drops to -15 degrees overnight. Write and then evaluate a subtraction expression to determine the change in temperature.


  1. Answer:

    -17 degrees

    Step-by-step explanation:

    Given that:

    Initial temperature = 2 degrees

    Final temperature = -15 degrees

    To Determine:

    The change in temperature.


    First of all, let us have a look at the method for calculating the change in any quantity.

    Let the initial quantity = a

    Let the final quantity = b

    Change in quantity = Final quantity – Initial quantity = b - a

    Here, we are given the quantity as temperature.

    where a = 2 degrees and

    b = -15 degrees

    Therefore, the change in temperature = -15 – 2 = \bold{-17} degrees

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