Curriculum placement

Grade 2. This describes the skill, not a learner estimate.

Coins and bills

Calculate amounts with common coins and bills

Problem types

  • Credit and fixed or variable expenses
  • Name a coin and write its value
  • Income, saving and making things
  • Change and cost in dollars and cents
  • Make change with the fewest coins
  • Compare sets of bills and coins
  • Count coins
  • Count bills and coins
  • Make one dollar
  • Pay an exact amount
  • Money left after buying
  • Money totals, then a coupon or a purchase
  • Which expenses change each month

Builds on

  • Adding within 100
  • Compare two-digit numbers · Useful idea

    Two prices compare the same way as two-digit numbers, by comparing the tens place first.

  • Ordering numbers through 10 · Useful idea

    Deciding which of two money amounts is greater compares the numbers of cents or dollars.

  • Making 10 · Useful idea

    Pairs that make ten give pairs of coins that make a dime, and pairs that make 100 cents give a dollar.

Leads to

  • Tenths and hundredths as decimals · Extend the idea

    A cent is one hundredth of a dollar, so 25 cents is 0.25 dollar, a decimal with hundredths.

  • Money with decimals · See it applied

    Counting coins and bills gives a total in dollars and cents, which is a decimal through hundredths.

  • The four operations with decimals · See it applied

    Dollars and cents are hundredths of a dollar. Adding money is adding decimals aligned by place.

  • Percent of a number · See it applied

    A quarter is 25 percent of a dollar, so coin values name percents of a dollar.

  • Finding a unit rate · See it applied

    The price of one item is found by dividing the total cost, which compares prices per unit.

Related skills

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