general round off in exchange rate

Hi,

This is Maria. I have query on decimal values.

i have a decimal value a= 8.34512

when im rounding it or finding the abs … it is giving like 8.35

i would like to get 8.34, i dont want to round off … i want to truncate the remaining decimal. I meant i wanted to get the result as 8.34 and i dont want 0.00512

How should i get these ?

Please advise.