How many nickels make 500 dollars?

Answer 1

A nickel is 5 cents.

There are 100 cents in a dollar.

So the number of nickels in a dollar is (100/5) = 20

You have 500 dollars, each worth 20 nickels, so the total number of nickels is the product.
500/0.05 = 10,000

Answer 2

There are 100 cents in a dollar, so to make $500, you would need 50000 cents. Since a nickel is worth 5 cents, you would need 10000 nickels to make $500.