[cocoapuffs7]

Although in juxtaposition from the English pronunciation, it has an advantage:

"If it was written as 1,200.00$ it would be easier to forge it to become, for example, 91,200.00$ by appending a single digit in front."

[101008]

It is the same if it goes before.

$100 can become $1000 or whatever. It is in fact this the reason checks have the quantity written in letters too, and also a dash that occupies the rest of the space.

[whatl3y]

It’s not the same if you complete the amount with cents. 100.00$ can become 9100.00$ much easier than $100.00.

I explicitly and carefully write out my tip and total with a dollar sign and cents and sometimes circle the total in an attempt to prevent the temptation for anyone to alter the amount (I’ve heard this happening to a could of friends back in college at restaurants and bars).