Making 1 Dollar with Combinations of Coins
Time and Money, and more...

 1 EASY How many dimes do you need to make a dollar?

 2 EASY Do 9 dimes and 2 nickels make a dollar?

 3 MEDIUM How many nickels would you need to add to 2 quarters if you want exactly $1 in total?  4 MEDIUM How could you make one dollar with 3 quarters and the least amount of other coins possible? 3 quarters and 5 nickels3 quarters, 2 dimes, and 1 nickel3 quarters, 1 dime, and 3 nickels3 quarters, 2 dimes, and 5 pennies3 quarters and 25 pennies  5 MEDIUM How many nickels do you need to make a dollar?  6 MEDIUM How could you make one dollar with 2 quarters, 2 dimes, and 10 nickels? With 2 quarters, 2 dimes, and 6 nickelsWith 2 quarters, 2 dimes, and 2 nickelsWith 2 quarters, 2 dimes, and 4 nickelsWith 2 quarters and 10 nickelsA and D  7 HARD Laura wants to buy a$1 popsicle. But Laura has a lot of heavy change in her wallet, so she wants to get rid of some coins. If Laura has 20 pennies, 10 quarters, 10 dimes, and 13 nickels, in which way could Laura pay for the $1 popsicle and use as many coins as possible? Using 20 pennies, 12 nickels, and 2 dimesUsing 20 pennies, 13 nickels, and 1 quarterUsing 20 pennies, 10 quarters, 10 dimes, and 13 nickelsUsing 4 quartersUsing 20 pennies, 11 nickels, and 1 quarter  8 HARD Jessica's mom has to pay for parking at the restaurant, which costs$1. However, the machine for paying does not give you change. Jessica's mom has 10 pennies, 5 dimes, 3 quarters, and 3 nickels in her wallet. How could select coins to muster exactly \$1? Using 10 pennies, 3 quarters, and 3 dimesUsing 10 pennies, 3 quarters, and 3 nickelsUsing 5 dimes and 2 quartersBoth A and BBoth B and C

 9 HARD If you had 1 half-dollar, 1 quarter, 1 dime, 3 nickels, and 6 pennies, what is the least number of coins you need to make one dollar?

 10 HARD If you had 1 half-dollar, 1 quarter, 1 dime, 3 nickels, and 6 pennies, what is the most number of coins you could use to make one dollar?