Round up a decimal number to one decimal place

[Rashford]

Hello everybody,
I need some help.
My task is to round up a decimal number to one decimal place.
In the picture are a few numbers from many that I have to round up.
As an example, I have to round up the 3.175 to 3.1.
But I have to implement the rounding with a VBA function and cannot use ROUND-DOWN.

 

[Fluff]

Sounds like a homework question to me.
Have a look at the INT function.