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# Show Number
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Show a number on the [LED screen ](/device/screen ). It will slide left if it has more than one digit.
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~~~~sig
basic.showNumber(2, 150)
~~~~
### Parameters
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* **value** is a [Number ](/reference/types/number ).
* **interval (ms)** is an optional [Number ](/reference/types/number ). It means the number of milliseconds before sliding the **value** left by one LED each time. Bigger intervals make the sliding slower.
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### Examples:
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To show the number 10:
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~~~~blocks
basic.showNumber(10)
~~~~
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To show the number stored in the `x` variable:
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~~~~blocks
let x = 1
basic.showNumber(x)
~~~~
### Example: count to 5
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This example uses a [for ](/reference/loops/for ) loop to show numbers ``0`` through ``5`` on the screen:
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~~~~blocks
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for (let i = 0; i < 6 ; i + + ) {
basic.showNumber(i)
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basic.pause(200)
}
~~~~
### Other show functions
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* use [show string ](/reference/basic/show-string ) to show a [String ](/reference/types/string ) with letters on the screen
* use [show animation ](/reference/basic/show-animation ) to show a group of pictures on the screen, one after another
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### Lessons
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* [lucky 7 ](/lessons/lucky-7 )
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### See also
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[show string ](/reference/basic/show-string ), [show animation ](/reference/basic/show-animation ), [Number ](/reference/types/number ), [math library ](/reference/math )
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