Maryland Math 2.GR.C.9
The Standard
Count mixed sets of coins and bills to solve problems in context (within $20.00) involving bills, quarters, dimes, nickels, and pennies, using $ and ¢ symbols appropriately.
Maryland College and Career Ready Standards for Mathematics (2025) · WORK WITH TIME AND MONEY.
Teacher's field guide
What This Standard Means
What Students Need to Do
- Students count bills and coins together to find how much money they have, up to $20. They use that total to answer a shopping question and write amounts using $ or ¢ correctly.
What Mastery Looks Like
- A student counts the bills, then the coins, without losing track when the coins reach 100¢. They can write a total such as $12.68 and tell whether it covers a given price.
Common Misconceptions
- Some students count each coin as one cent or think a nickel is worth more than a dime because it is bigger. Others lose track when the coins pass 100¢ or write $5.68¢ instead of $5.68.
How to Assess It
- A notebook costs $5.60. You have a $5 bill, 2 quarters, 1 dime, 1 nickel, and 3 pennies. Can you buy it? Write your total with a $ sign and the amount left with a ¢ sign.
Lesson moves
Ways to Teach It
Give pairs play bills and coins, then have them build and count $8.36 for a pretend bookstore purchase.
Ask students to write how they would count a $10 bill, three quarters, two nickels, and four pennies, then compare methods.
Play cashier: show a $6.47 price tag, have one student make the amount, and another check each bill and coin.
Use a grocery flyer to choose a snack under $20, then have students make its price with play money and write the total.
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Printable 2.GR.C.9 Worksheet
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