Did you guess 10? If so, you are correct..there are at least 10.
EVEN() and ODD() round to the nearest even or odd integer.
INT() rounds down to the next lowest integer.
TRUNC() is similar to ROUNDDOWN () but rather then rounding to a specific number of digits, it simply cuts off the specified number of digits.
Below is a spreadsheet showing the results of these different rounding functions:
Click on the spreadsheet to make it larger and easier to see or to access the spreadsheet itself, click here