401.397: Round off the (terminating) decimal number to the nearest hundredth (2 decimal places)

401.397 rounded to the nearest hundredth (2 decimal places) = ?

How is the number rounded off? Half Up, Half Down, Half Away From Zero, Half Towards Zero, Half to Even, Half to Odd. To Ceiling, To Floor.

Rounding a number means replacing it with a simpler, shorter approximation, while keeping its value close to the initial one. The rounded number will be less accurate, but easier to work with.

How is the number rounded off? Explanation.

Our number is sitting on the axis of numbers between two 2 decimal place consecutive neighboring numbers:
401.39 < 401.397 < 401.4


Our number is to be rounded off to one of these neighbors, the closer one.


The middle of this interval, the number that is equally close to the either neighbor, is: (401.39 + 401.4) ÷ 2 = 401.395


Our number, 401.397, is larger than 401.395, so it is closer to the larger neighbor: 401.4


Except for 'To Ceiling, To Floor', the rounded off number (both the positive and the negative) will be equal only to this larger neighbor.


Rule of thumb:

Rounding digit. Let's call the digit of the position place that is intended to round off to as the 'rounding digit'. The digit is 9: 401.397


In a positive number, if the digit to the right of the 'rounding digit' is larger than 5, then the number is rounded to the larger neighbor.

The digit is 7: 401.397 ≈ 401.4 rounded to the nearest hundredth (2 decimal places).


Or, even simpler.
In any number rounded to decimal places, if the digit to the right of the 'rounding digit' is 5 (but it is not the last non-zero digit to the right) or more than 5, ie. 6, 7, 8 or 9, then increase the 'rounding digit' by 1 and drop all the digits to the right of it, 9 + 1 = 10:

401.397 ≈ 401.4 rounded to the nearest hundredth (2 decimal places)


Below we round off both the positive and the negative:

Half Up, Half Down, Half Away From Zero, Half Towards Zero, Half to Even, Half to Odd. To Ceiling, To Floor.


Number Round Half Up:

Numbers that are halfway between two neighbors are rounded off to the larger neighbor. 401.397 is not halfway between its neighbors.


401.397 ≈ 401.4


- 401.397 ≈ - 401.4


rounded to the nearest hundredth (2 decimal places)


Number Round Half Down:

Numbers that are halfway between two neighbors are rounded off to the smaller neighbor. 401.397 is not halfway between its neighbors.


401.397 ≈ 401.4


- 401.397 ≈ - 401.4


rounded to the nearest hundredth (2 decimal places)


Number Round Half Away From Zero:

Numbers that are halfway between two neighbors are rounded off to the neighbor which is farther away from zero. 401.397 is not halfway between its neighbors.


401.397 ≈ 401.4


- 401.397 ≈ - 401.4


rounded to the nearest hundredth (2 decimal places)


Number Round Half Towards Zero:

Numbers that are halfway between two neighbors are rounded off to the neighbor which is closer towards zero. 401.397 is not halfway between its neighbors.


401.397 ≈ 401.4


- 401.397 ≈ - 401.4


rounded to the nearest hundredth (2 decimal places)


Number Round Half to Even:
(Gaussian Rounding or Banker's Rounding)

Numbers that are halfway between two neighbors are rounded off to the neighbor with an even rounding digit. 401.397 is not halfway between its neighbors.


401.397 ≈ 401.4


- 401.397 ≈ - 401.4


rounded to the nearest hundredth (2 decimal places)


Number Round Half to Odd:
(Gaussian Rounding or Banker's Rounding)

Numbers that are halfway between two neighbors are rounded off to the neighbor with an odd rounding digit. 401.397 is not halfway between its neighbors.


401.397 ≈ 401.4


- 401.397 ≈ - 401.4


rounded to the nearest hundredth (2 decimal places)


Number Round Ceiling:

All the numbers that are between two neighbors are always rounded off to the larger neighbor.


401.397 ≈ 401.4


- 401.397 ≈ - 401.39


rounded to the nearest hundredth (2 decimal places)


Number Round Floor:

All the numbers that are between two neighbors are always rounded off to the smaller neighbor.


401.397 ≈ 401.39


- 401.397 ≈ - 401.4


rounded to the nearest hundredth (2 decimal places)


More operations like this:

Round off the number 401.398. Round off the (terminating) decimal number to the nearest hundredth (2 decimal places)


All Numbers Are Rounded Off: Half Up, Half Down, Half Away From Zero, Half Towards Zero, Half to Even, Half to Odd. To Ceiling, To Floor. Rounding Off Integers, Terminating Decimals, Pure or Mixed Repeating (Recurring) Decimal Numbers

Round off to whole places or decimal places

The latest 13 operations with rounded off numbers:

Round off 401.397 to the nearest hundredth (2 decimal places) Mar 29 13:32 UTC (GMT)
Round off 4.8 to the nearest ten (2 whole places) Mar 29 13:32 UTC (GMT)
Round off 1.06798381394933 to the nearest thousandth (3 decimal places) Mar 29 13:32 UTC (GMT)
Round off 7,491 to the nearest thousand (4 whole places) Mar 29 13:32 UTC (GMT)
Round off 173.8 to the nearest hundred (3 whole places) Mar 29 13:32 UTC (GMT)
Round off 487.8 to the nearest hundredth (2 decimal places) Mar 29 13:30 UTC (GMT)
Round off 0.2666687 to the nearest ten (2 whole places) Mar 29 13:30 UTC (GMT)
Round off 622,054 to the nearest hundred thousand (6 whole places) Mar 29 13:30 UTC (GMT)
Round off 5.567768678 to the nearest one (1 whole place) Mar 29 13:29 UTC (GMT)
Round off 1.06798386398993 to the nearest ten (2 whole places) Mar 29 13:29 UTC (GMT)
Round off 1.06798382077993 to the nearest ten (2 whole places) Mar 29 13:28 UTC (GMT)
Round off 2.33654 to the nearest thousandth (3 decimal places) Mar 29 13:28 UTC (GMT)
Round off 1.06799669 to the nearest ten (2 whole places) Mar 29 13:28 UTC (GMT)
All the operations with the numbers rounded off by users...

How to round off numbers?

1. Rounding off numbers: definition.

2. How to round off a number to whole places?

3. How to round off a number to decimal places?

4. Mathematical explanation of the rules used in numbers rounding.

5. Special cases. Examples.