The number \(5.1492\) has four decimal places, while \(4.34\) has two decimal places. To round a number to a given number of decimal places, look at the number in the next decimal place.

If you’re getting a little more busy with geometry, science, or engineering, you might have tacked on a few extra decimal places in your usual calculations. But what about the big dogs?

The precision of a double in Java is 10-324 decimal places, although true mathematical precision can suffer due to issues with binary arithmetic. To simplify display, you can use %d printf notation to ...

Precede the letter f with a decimal and number to specify precision. It is a common requirement to format currencies to two decimal places. /* Code example to print a double to two decimal places with ...

However, one last point is worth mentioning: If you are working with more than two decimal places, don't be surprised if you don't see the same number of decimal places on the spreadsheet as you do on ...