Learn English – Thousand/thousands

On a check – which is one of the few places where you see such numbers written out in their long form – you might see any of the following conventions used:

• Twenty-three thousand four hundred twenty-eight dollars & thirty-two cents
• Twenty-three thousand four hundred twenty-eight dollars and 32 cents
• Twenty-three thousand four hundred twenty-eight dollars and 32/100

I don't believe too many people would use the top one, though – not when they were writing out the number in longhand – although you might see the number of cents spelled out on a computer-printed check.

In the case where the dollar amount is even, you might see:

• Twenty-three thousand four hundred twenty-eight dollars and no cents
• Twenty-three thousand four hundred twenty-eight dollars and no/100
• Twenty-three thousand four hundred twenty-eight dollars & 0/100
• Twenty-three thousand four hundred twenty-eight dollars only

I think the last one is relatively uncommon, although I've personally used it for decades. (I first saw it as a teenager, thought it was a cool, quirky way to write checks in even amounts, and so I adopted the practice.) Sometimes I'll even use the word exactly, when the dollar amount is more even:

• Twenty-three thousand four hundred dollars exactly

although I don't usually write checks in that large an amount.

If your argument was that thousands means 2000+, then you could show your boyfriend the following dictionaries, which define thousands in your favour:

• merriam-webster
• freedictionary
• collins

Do not show him the following dictionaries, which define thousands in his favour:

• oxford
• dictionary.com
• cambridge

I'd say opinion is well and truly divided.