#                  
## Overview
The **`round()` method** can be used to round a number to a specified number of decimal places in Ruby. We can use it without a parameter (`round()`) or with a parameter (`round(n)`). 

**`n`** here means the number of decimal places to round it to.
## Syntax
```ruby
# default rounding
float_value.round
# to n decimal places
float_value.round(n)
```
## Parameters
**`float_value`**: This is the float value we want to round.

**`n`**: Represents the number of decimal places we want to round the `float_value` to.

## Return value
The value returned is a float rounded to the nearest value with a precision of `n` decimal digits or `0` digit if no parameter is passed.

## Example


# create some float values
f1 = 2.3333545
f2 = 1.4445567
f3 = 100.12711
f4 = -0.8889

# round float values
# and print results
puts f1.round     # to 0 decimal place
puts f2.round(3)  # to 3 decimal places
puts f3.round(1)  # to 1 decimal place
puts f4.round(2)  # to 2 decimal places

## Explanation
* **Line 2–5**: We define some float values that we want to round off.
* **Linew 9–12**: We call the `round()` method on the already defined float values and print the results.

How to round float value to the nearest n decimal places in Ruby

Overview

Syntax

Parameters

Return value

Example

Explanation