In colonial times, of course, British and American conventions would have coincided, and would have included "and". Somewhere around the turn of the 20th century, American schools started teaching the "andless" number as a written convention, which has been adopted in speech to varying degrees, but "anded" numbers have never been completely suppressed in the American vernacular. Seriously, "One Hundred One Dalmatians"? Or "A Thousand One Arabian Nights"? I have only heard the "and" used in two places: - Within any 3-digit block, "and" may be inserted between a positive hundreds digit and a positive remainder. For example "three hundred *and *twelve" or "seven hundred *and *fifty-six thousand two hundred *and *four". - If there are more than two blocks in a number, if the final block is the "ones" block, and the final block has no hundreds and a positive remainder, "and" can precede the final block. Examples are "one thousand *and *one", "one hundred and seven million *and* twenty-three", but not "five million *and *sixty-seven thousand" (since the last block is not the "ones" block), nor "six thousand *and *three hundred and twenty" (since the last block has positive hundreds). I have heard the andless version spoken, as well as various hybrids between andless and anded versions. Completely andless numbers are almost always in formal speech, for example, reading from a manuscript, while the vernacular almost always includes "and" to some extent. On 9/26/2011 10:15 PM, Tom Karzes wrote:
I was taught not to use "and" in the integer portion of a number when spelling it out, nor to use commas. A quick web check confirmed you should not use "and" for American spelling, but that you should use it for the hundreds portion in British spelling. Example: "seven hundred twenty-seven" (American) vs. "seven hundred and twenty-seven" (British).
Here's a reference:
http://en.wikipedia.org/wiki/American_and_British_English_differences#Number...
Tom