In this Grade 4 Eureka Math lesson from Chapter 33, students learn to express money amounts — including pennies, dimes, quarters, and combinations of coins — as decimal numbers using dollar notation. Students connect coin values to fractions of a dollar, such as recognizing that 1 dime equals one-tenth of a dollar and writing it as $0.10, and that 1 penny equals one-hundredth of a dollar written as $0.01. The lesson builds on prior knowledge of fractions with tenths and hundredths to help students fluently convert between cent amounts, fractional dollar notation, and decimal form.
Section 1
Expressing Coin Values as Fractions of a Dollar
The value of a coin can be expressed as a fraction of a dollar by using its value in cents as the numerator and 100 as the denominator.
Section 2
Calculate the Total Value of a Combination of Coins
To find the total value of a group of coins in cents, multiply the quantity of each coin type by its value in cents and then add the results.
Total Value in Cents =
Section 3
Convert Cents to Dollars (Amounts Greater Than 100)
To convert a total number of cents greater than 100 to a decimal dollar amount, write the total cents as the numerator of a fraction with a denominator of 100. This improper fraction can be converted to a mixed number, which directly corresponds to the decimal dollar amount.
Section 4
Add and Regroup Money Amounts
To add money amounts, add the dollars and cents separately. If the sum of the cents is 100 or more, regroup by converting every 100 cents into 1 dollar.
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Section 1
Expressing Coin Values as Fractions of a Dollar
The value of a coin can be expressed as a fraction of a dollar by using its value in cents as the numerator and 100 as the denominator.
Section 2
Calculate the Total Value of a Combination of Coins
To find the total value of a group of coins in cents, multiply the quantity of each coin type by its value in cents and then add the results.
Total Value in Cents =
Section 3
Convert Cents to Dollars (Amounts Greater Than 100)
To convert a total number of cents greater than 100 to a decimal dollar amount, write the total cents as the numerator of a fraction with a denominator of 100. This improper fraction can be converted to a mixed number, which directly corresponds to the decimal dollar amount.
Section 4
Add and Regroup Money Amounts
To add money amounts, add the dollars and cents separately. If the sum of the cents is 100 or more, regroup by converting every 100 cents into 1 dollar.
Book overview
Jump across lessons in the current chapter without opening the full course modal.
Continue this chapter