Since your numbers are 2 digits max you can try this approach.

First divide the number by **10** then for example if we divide **21** by **10** we get **2** and **some reminder** with **math.floor** we get rid of the reminder just **2** is left then we multiply **2** by **10** we get **20** that is the first part.

The second part just use % on the the number to get the reminder so for example **21 % 10** it would be **1**

```
var numbers = [20, 21, 22];
var numberSeperator = function(number){
return [Math.floor(number / 10) * 10, number % 10];
}
for(var i = 0; i < numbers.length; i++){
console.log(numberSeperator(numbers[i]))
}
```

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solved how to separate number using javascript? [closed]