### Rounding of Numbers

Rounding is one of the most frequent operations on the numbers. JavaScript provides several built-in functions for rounding which are given in the below table.

|Function|Description|Example|
|-|-|-|
|`Math.floor()`|Rounds off to the lower limit|`3.1` becomes `3`, and `-1.1` becomes `-2`.|
|`Math.ceil()`|Rounds off the number to the upper limit|`3.1` becomes `4`, and `-1.1` becomes `-1`.|
|`Math.round()`|Rounds off the nearest integer when value is equal or greater than `.5`|`3.1` becomes `3`, `3.6` becomes `4`, and `3.5` rounds up to `4` (the middle case)|
||||

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The syntax of the JavaScript programming language is the set of rules that defines how a JavaScript program will be written and interpreted (by both the runtime system and by human readers).

JavaScript is dynamically typed (also called loosely typed) scripting language. That is, in javascript variables can receive different data types over time. Datatypes are basically typed of data that can be used and manipulated in a program.

Function	Description	Example
`Math.floor()`	Rounds off to the lower limit	`3.1` becomes `3`, and `-1.1` becomes `-2`.
`Math.ceil()`	Rounds off the number to the upper limit	`3.1` becomes `4`, and `-1.1` becomes `-1`.
`Math.round()`	Rounds off the nearest integer when value is equal or greater than `.5`	`3.1` becomes `3`, `3.6` becomes `4`, and `3.5` rounds up to `4` (the middle case)

Function	Description	Example
`Math.floor()`	Rounds off to the lower limit	`3.1` becomes `3`, and `-1.1` becomes `-2`.
`Math.ceil()`	Rounds off the number to the upper limit	`3.1` becomes `4`, and `-1.1` becomes `-1`.
`Math.round()`	Rounds off the nearest integer when value is equal or greater than `.5`	`3.1` becomes `3`, `3.6` becomes `4`, and `3.5` rounds up to `4` (the middle case)

Number 2/3

Rounding of Numbers

Soluzione

Number 2/3

Rounding of Numbers

Soluzione