1,178: Round off the integer number to the nearest one (1 whole place)

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.

Note: An integer rounded to the nearest one (1 whole place) remains the same. There is no other digit to the right of the units place, based on which to round off the number.

Number rounded to the nearest one (1 whole place):

1,178 = 1,178

Counting by ten thousands (5 whole places at a time), our number is sitting on the axis of numbers between two consecutive neighboring numbers:
0 < 1,178 < 10,000

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: (0 + 10,000) ÷ 2 = 5,000

Our number, 1,178, is smaller than 5,000, so it is closer to the smaller neighbor: 0

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

Note: Because the number does not have enough whole digits, we add zeros to its left, up to the rounding position place. The number value is not changing.

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 0: 01,178

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

The digit is 1: 01,178 ≈ 0 rounded to the nearest ten thousand (5 whole places).

Or, even simpler.
In any number rounded to whole places, if the digit to the right of the 'rounding digit' is less than 5 (0 to 4), then leave the 'rounding digit' as it is and replace all the digits to the right of it with zeros:

01,178 ≈ 0 rounded to the nearest ten thousand (5 whole places)

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 bigger neighbor. 01,178 is not halfway between its neighbors.

1,178 ≈ 0

- 1,178 ≈ 0

rounded to the nearest ten thousand (5 whole places)

Number Round Half Down:

Numbers that are halfway between two neighbors are rounded off to the smaller neighbor. 01,178 is not halfway between its neighbors.

1,178 ≈ 0

- 1,178 ≈ 0

rounded to the nearest ten thousand (5 whole 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. 01,178 is not halfway between its neighbors.

1,178 ≈ 0

- 1,178 ≈ 0

rounded to the nearest ten thousand (5 whole places)

Number Round Half Towards Zero:

Numbers that are halfway between two neighbors are rounded off to the neighbor which is closer towards zero. 01,178 is not halfway between its neighbors.

1,178 ≈ 0

- 1,178 ≈ 0

rounded to the nearest ten thousand (5 whole 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. 01,178 is not halfway between its neighbors.

1,178 ≈ 0

- 1,178 ≈ 0

rounded to the nearest ten thousand (5 whole 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. 01,178 is not halfway between its neighbors.

1,178 ≈ 0

- 1,178 ≈ 0

rounded to the nearest ten thousand (5 whole places)

Number Round Ceiling:

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

1,178 ≈ 10,000

- 1,178 ≈ 0

rounded to the nearest ten thousand (5 whole places)

Number Round Floor:

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

1,178 ≈ 0

- 1,178 ≈ - 10,000

rounded to the nearest ten thousand (5 whole places)