The US Dollar can be split into 100 cents. A penny is worth 1 cent. A nickle is worth 5 cents. A dime is worth 10 cents. And a quarter is worth 25 cents. Therefore to make change for a 1 dollar bill you would need 4 quarters, 10 dimes, 20 nickels, or 100 pennies. I know this is more than you asked for but i figured I'd go above and beyond. There is also a nearly endless list of combinations of different coins. i.e. 5 pennies, 2 nickles, 1 dime, and 3 quarters.
1 dime 3 quarters 1 nickel 5 pennies
2 quarters, 1 dime, 5 pennies
You can use: 1 quarter and 75 pennies 2 quarters and 50 pennies 3 quarters and 25 pennies 4 quarters and no pennies 100 pennies and no quarters
6 quarters, 1 nickel and 1 penny.
Two ways. 1 quarter and 10 dimes, or 3 quarters and 5 dimes.
3 quarters 1 dime 1 nickel
3 quarters, 2 dimes, 1 nickel.
4 quarters, 1 dime, and 1 penny 2 half dollars, 1 dime, and 1 penny 4 quarters, 2 nickels, and 1 penny
2 Quarters, 1dime, 1 nickel.
5.
Lets answer this using our understanding of currency. We know for a fact that 4 quarters is equaled to 1 dollar. So if it takes 4 quarters to make 1 dollar we can multiple 600,000 by 4 to discover that amount of quarters we would need. $600,000 * 4 = 2,400,000 quarters to equal $600,000
5 quarters 1 nickel 4 pennies