47 International fifties.
Seven.
9
Twelve of them
There are 20 fifties in 1,000 because = 1,000 divided by 50=20
13
There are 5000 ones in 5000.
5000 of what?
.. 4000/50= 80
There are a thousand fifties in fifty thousand.
The singular of "fifties" is "fifty."
The plural of fifty is fifties. As in "the fifties were a good decade".