How many pennies are in a dollar? How do you make change? Learn how to count, identify, add, and subtract money in the I Like Money Math! series.
"THESE FUN BOOKS GIVE YOUNG READERS A CLEAR AND SIMPLE EXPLANATION OF U.S. COINS AND BILLS, THEIR VALUES, AND RELATIONSHIPS."
Tena L. Roepke, EdD, Associate Professor of
Mathematics/Education, Ohio Northern University
About the Author
Author Rebecca Wingard-Nelson has worked in public, private, and home-school mathematics education. She has been involved in various educational math projects, including developing and writing state assessment tests, exit exams, and proficiency tests, as well as writing and editing textbooks and workbooks.
penny
1
nickel
5
dime
10
quarter
25
one-dollar bill
$1
five-dollar bill
$5
ten-dollar bill
$10
twenty-dollar bill
$20
You can solve word problems about money using four steps. 1.
Read the problem. Jacob has 2 dimes and 3 pennies. How many cents does Jacob have? 2. Plan how to solve the problem. What does the problem ask you to find? How many cents Jacob has. 3. 3.
Follow the plan. Count the value of the coins. First count by tens for the dimes. Then count on by ones for the pennies. Jacob has 23. 4.
Check your work. Did you use the right coins? Yes. Count the value of the coins again. Is your answer the same? Yes.
Read the problem. Ben had 50.
He found a quarter. How much money does Ben have in all? Plan how to solve the problem. What does the problem ask you to find? How much money Ben has in all. How can you find the answer? You can add the amount Ben started with and the amount he found. Follow the plan. How much money did Ben start with? What did Ben find? A quarter.
What is the value of a quarter?
Started with | 50 |
Found | + 25 |
75 |
Ben has 75 in all. Check your work. Did you use the numbers from the problem? Yes, Ben started with 50. Did you use the correct value for a quarter? Yes, a quarter is worth 25.
Read the problem. Sienna had $6.
She used $2 to pay for her lunch. How many dollars does Sienna have left? Plan how to solve the problem. What does the problem ask you to find? How many dollars Sienna has left. How can you find the answer? You can subtract the amount Sienna spent from the amount she started with. Follow the plan.
Sienna started with $6. | $6 |
She spent $2. Subtract $2. | - $2 |
$4 |
Sienna has $4 left. Check your work. Did you start with the right amount? Yes, $6. Did you subtract the right amount? Yes, $2. Check your subtraction using addition.
Read the problem.
Read the problem.
Trina had 3 dimes and 4 pennies. Annie had 1 quarter and 3 nickels. Who had more money? Plan how to solve the problem. What does the problem ask you to find? Who had more money. How can you find the answer? Count how much money each girl had. Then compare to see who had more.
Follow the plan. How much money did Trina have? She had 3 dimes and 4 pennies. Count the value of 3 dimes and 4 pennies. Trina had 34. How much money did Annie have? She had 1 quarter and 3 nickels. Count the value of 1 quarter and 3 nickels.
Annie had 40. Which is more, 34 or 40? 40 is more than 34. Annie had more money than Trina. Check your work. Count the value of each girl's coins again.
Read the problem.
Read the problem.
Barack has 3 dimes and 14 pennies. A marker costs 39. Does he have enough money to buy a marker? Plan how to solve the problem. What does the problem ask you to find? If Barack has enough money to buy a marker. How can you find the answer? First find the value of 3 dimes and 14 pennies by adding the value of the dimes and the pennies. Compare this amount to the price of a marker to find out if Barack has enough to buy the marker.
Follow the plan. How much is 3 dimes and 14 pennies worth?
3 dimes = 30 | 30 |
14 pennies = 14 | + 14 |
44 |
Barack has 44. A marker costs 39. Barack needs 39 or more to buy a marker.44 is more than 39. Barack has enough money to buy a marker. Check your work.
Did you answer the right question? Yes. Count the coins. Did you get the same answer? Yes.
Read the problem. Emily has a ten-dollar bill. A poster costs $5.
A book costs $6. Does she have enough to buy the poster and the book? Plan how to solve the problem. What does the problem ask you to find? If Emily has enough for a poster and a book together. How can you find the answer? You can add the cost of the poster and the cost of the book to find what they cost together. Then compare the cost and the amount Emily has to find out if she has enough. Follow the plan.