Does 50 20s make 1000?

There are fifty twenties in a thousand dollars.

How many Twentys make a thousand?

There would be fifty.

How many twenties does it take to make $2000?

There are 100 $20 in $2000.

How much money is a stack?

The entry provides the phrase “stacks of the ready” to mean “plenty of money”. I think this phrase, in the prevailing years, was shortened to the slang stack, which also took on the meaning of $1000. That is, one stack is equivalent to one grand which is $1000.

How many 100 make a 1000?

10
As there are 3 zeros in thousand. Thus, the number of hundreds in 1000 is 10.