how to pronounce numbers

[Wes Loewer]

In British English, it is proper to insert the "and" while in American English it is proper to not insert the "and."

126:
one hundred twenty-six (American)
one hundred and twenty-six (British)

Here's a simply test. How do you remember the move "2001: A Space Odyssey" being pronounced? It probably depends on what country you lived in.
two thousand one (American)
two thousand and one (British)

As far as the decimals go, saying "12 thousandths" for 0.012 is probably more correct, but saying "zero point oh one two" is more common and probably more accurately understood. I'm a math teacher and commonly call out answers to homework problems. One day I decided to call out the answers using words (one hundred twenty-three thousandths). After the first few, the students begged me to please call out the numbers "the normal way."