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Hi there! I am Studyfin, your friendly tutor. Today we will explore US coins and bills and learn how to solve real-world money problems!
Money helps us buy things we need and want. In the United States, we use paper bills and metal coins. Every coin and bill has a specific value that we can add together.
Let us look at coins. A penny is worth 1 cent, a nickel is 5 cents, a dime is 10 cents, and a quarter is 25 cents. We can represent groups of coins by adding their values together.
We can represent and solve subtraction problems with bills. If you have a ten-dollar bill and spend four dollars, you can subtract to find your remaining money. Ten minus four leaves you with six dollars.
We also use multiplication and division for equal groups of money. If you buy three toys that cost five dollars each, you can multiply three times five to get fifteen dollars. This helps us solve problems quickly!
Leo has a 20-dollar bill. He buys 3 notebooks that cost 4 dollars each. How much change does Leo get back?
- First, let us represent the cost of the notebooks. Leo buys 3 notebooks, and each one costs 4 dollars.
- We can multiply to find the total cost: 3 times 4 equals 12 dollars.
- Next, we represent the subtraction problem to find his change.
- We subtract the total cost from his 20-dollar bill: 20 minus 12 equals 8.
- Leo gets back 8 dollars in change!
