For example, take the number 342. It could be written out a number of different ways when spelled out fully.
- Three hundred forty two
- Three hundred and forty two
- Three hundred and forty-two
What is the most correct form for spelling out that number in full text? What is the rule for adding (or leaving out) the and? When does one use hyphens? Does the context matter, e.g. writing out the amount on a check vs. a news article?