<span>To provide consistent ways to identify and classify organisms as they are being studied.</span>
Answer:
5
Explanation:
Look at the number line and count the number of increments needed to get from point A to B.
In the real world you are not going to have a calculator on you 24/7. Nor will you have a pencil or paper to do longhand. You need to know how to accurately estimate your answers in order to be successful.
