Determine if a submitted value contains digits after the decimals

[RyanDLG1 (Ryan de la Garza)]

I had someone looking to determine if a submitted value contained digits after the decimal point or not. I’ve been racking my brain on this because I know there’s not a function for it, but I feel like there’s probably a way to check this in the calculator. Any ideas on how we could check for this?

Decimals • Activity Builder by Desmos

[Daniel_Grubbs]

Does this thread help?

String length and substrings

There aren’t really any string methods. If you’re actually doing something with numbers, there are ways to achieve the same objective. Not sure about length, but this finds the 3rd place value. v = 10011 p3 = numericValue("\floor( \mod(${v},1000) /100 ) ")