Round Nearest Thousandth. Nearest thousandth is the third digit after the decimal point. If the digit after thousandth is greater than or equal to 5, add 1 to thousandth.
To round a number to the nearest thousandth, first forget all of the numbers left on the thousandths place.
The next digit is 4 which is less than 5, so no change is needed to 7. We want to keep the 7 (it is in the 10s position). 4,180 round to the nearest thousand. Retain the correct number of decimal places (e.g.