AI Tutor
If you open up a wallet, you might find green paper money instead of heavy coins. How can you tell how much each green bill is worth just by looking at it?
Every paper bill gives you clues: a big number in the corners and a famous leader's portrait right in the middle.
What is the smallest paper bill we use every day?

The One Dollar Bill ($1)

The one dollar bill has the number 1 in every corner and features George Washington, the very first president of the United States.
We write it as $1, and it has the exact same value as 100 pennies.
What if you need to pay for something that costs five single dollars all at once?

The Five Dollar Bill ($5)

The five dollar bill has the number 5 in the corners and features Abraham Lincoln, the famous president known for wearing a tall stovepipe hat.
We write this amount as **5∗∗.Onefive−dollarbillcanbuythesamethingsasfiveseparate5**. One five-dollar bill can buy the same things as five separate 1 bills.