Standard

Solve word problems involving dollar bills, quarters, dimes, nickels, and pennies, using $ and ¢ symbols appropriately. Example: If you have 2 dimes and 3 pennies, how many cents do you have?

Student language:

• "I can count money to help me solve word problems."

Explanation

About the Math, Learning Targets, and Rigor

This standard calls for students to solve word problems involving either dollars or cents. Since students have not been introduced to decimals, problems should either have only dollars or only cents.

Note: Since money is not specifically addressed in kindergarten, first grade, or third grade, students should have multiple opportunities to identify, count, recognize, and use coins and bills in and out of context.

Example

What are some possible combinations of coins (pennies, nickels, dimes, and quarters) that equal 37 cents?

Example

What are some possible combinations of dollar bills ($1, $5 and $10) that equal 12 dollars?

Guidelines for 2.MD.8

• “Dollar bills” should include denominations up to one hundred ($1, $5, $10, $20, $100).
• Addition and subtraction word problems should be one or two-steps and contain problems from ally types in Table 1.
• Students use drawings and equations with a symbol for the unknown number to represent the problem.
• The dollar sign, $, is used for labeling whole-dollar amounts without decimals, such as $29.
• Students need to learn the relationships between the values of a penny, nickel, dime, quarter and dollar bill. For example, 5 pennies is the same as 1 nickel.

Common Misconceptions

• Sometimes students will record twenty-nine dollars as 29$. Remind them that the dollar sign goes in front.
• The cent sign goes after the number and there is no decimal point used with the cent sign nor can both signs be used in the same amount.
• Some students think that the value of a coin is directly related to its size, so the bigger the coin, the more it is worth.

Resources

Videos

• Khan Academy
  • scroll to find 2.MD.8, click on a skill, watch videos on left side in each skill
• Learn Zillion

EngageNY Lessons

Extra Practice

• North Carolina Tasks
• Illustrative Math Tasks
• Howard County Tasks
  • Click on 2nd grade at bottom, then 2.MD.8
• Common Core Sheets

Released Assessment Questions

2.MD.8 Student Example

Back to 2nd grade homepage