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Lesson · Grade 4 · Mathematics

Making change by counting up

  • Grade 4
  • Mathematics
  • 1 min 2 s
  • British Columbia
  • BC4-MA-29

A book costs $36.75 and you pay with a $50 bill, so you count up on a number line from the price to $50 in easy jumps: $0.25 to $37, $3 to $40 and $10 to $50. Adding the jumps gives $13.25 in change, the check $36.75 + $13.25 = $50 confirms it, and the recap says to count up from the price to what you paid.

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In one sentence

The question this lesson answers

A book costs 36 dollars and 75 cents.

You pay with a 50 dollar bill.

Transcript

What the lesson says

A book costs 36 dollars and 75 cents.

You pay with a 50 dollar bill.

How much change do you get back?

Count up from the price to 50 dollars.

First, 25 cents more makes 37 dollars.

Next, 3 dollars more makes 40 dollars.

Then, 10 dollars more makes 50 dollars.

Now add up the jumps.

25 cents plus 3 dollars plus 10 dollars is 13 dollars and 25 cents.

So your change is 13 dollars and 25 cents.

To check, add the change to the price.

36 dollars and 75 cents plus 13 dollars and 25 cents is 50 dollars, the amount you paid.

You can find the change by counting up from the price to what you paid.

Curriculum

Where this fits

British Columbia, Grade 4

Mathematics, Financial literacy: financial literacy: monetary calculations, including making change with amounts to 100 dollars and making simple financial decisionsBC4-MA-29

Previous: Dollars and Cents: Writing Money with a Decimal PointNext: Earn, Spend, Save and Give

British Columbia, Grade 5

Mathematics, Financial literacy: financial literacy: monetary calculations, including making change with amounts to 1000 dollars and developing simple financial plansBC5-MA-38

Next: A Simple Budget: Income, Expenses and a Savings Goal

This lesson is also listed in Grade 5.

The outcomes and strands follow the British Columbia curriculum.

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