Question

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

Answer 1

-17 degrees

Explanation:

Given that:

Initial temperature = 2 degrees

Final temperature = -15 degrees

To Determine:

The change in temperature.

Solution:

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