Money

Stage 3 of 23 Strand 3 of 5 4 lessons

4 illustrated lessons, each teaching the why before the how.

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Counting Coins #

Count what the coins are worth, not how many.

Coins are counted by their values, not by how many coins there are

Three 10 cent coins make 30 cents.

Add these values together to make 40 cents.

Now you

What are these coins worth altogether?

A hundred cents trade for one dollar.

One dollar is one hundred cents, and bills count whole dollars

Count up: 25, 50, 75, 100. A hundred cents exactly — one whole dollar.

Those hundred cents trade for one dollar bill. The $ sign counts dollars.

Bills count dollars, coins count cents: 3 dollars and 35 cents.

Now you

How many cents make one dollar?

How many 25¢ coins make one dollar?

Count up from the price to what you paid.

Change is the gap between the price and what you paid, counted up from the price

A pencil costs 65 cents. You pay with a dollar — 100 cents.

Count up from the price: hand over coins until 65 reaches 100.

The coins that filled the gap come back to you: 35 cents of change.

Now you

A sticker costs 15¢. You pay 100¢. How much change?

A pencil costs 45¢. You pay 100¢. How much change?

Dollars with dollars, cents with cents.

Dollars add with dollars and cents with cents, trading 100 cents for a dollar

Add the dollars and the cents in their own columns: $2.45 + $1.30 = $3.75.

When the cents pass 100, a dollar trades up: $2.45 + $1.80 = $4.25.

Short of cents? Break a dollar into 100 of them: $4.25 − $1.80 = $2.45.

Now you

$7.25 − $3.65

$5.50 − $1.75