Question

Pennsylvania has a land area of 44,816 square miles. What is the land area of Pennsylvania rounded to the nearest hundred? How do you know?

Answer 1

`44,800\ mi^2`

Explanation:

we know that

To Round a number

a) Decide which is the last digit to keep

b) Leave it the same if the next digit is less than
`5` (this is called rounding down)

c) But increase it by
`1` if the next digit is
`5` or more (this is called rounding up)

In this problem we have

`44,816`

We want to keep the digit
`8`

The next digit is
`1` which is less than
`5`, so no change is needed to
`8`

therefore

the answer is

`44,800\ mi^2`