Question

398.574986215 to the nearest ten-thousandth.

Answer 1

Answer: $398.5750$

Step-by-step explanation:

It is important to remember that the fourth digit after the decimal point is in the ten-thousandth place.

Then, given the  following number:

$398.574986215$

You can follow these steps in order ti round it to the nearest ten-thousandth:

1. You can identify that the digit in the ten-thousandth place is:

$9$

2. Identify the digit to the right of $9$. This is:

$8$

3. Since:

 $8>5$

 You must round up. Increase the digit $9$ by 1. (Notice that $9+1=10$, then the digit to the left of  $9$ increases by 1 too). Then:

$398.5750$