We are told that Jake will pay with a $$ 50$ bill for $2$ flats of petunias, $3$ flats of daisies, and $1$ flat of begonias. We are given the prices of the flowers in a table.

Flower	Price per Flat
Petunia	$$ 5.25$
Daisy	$$ 7.65$
Begonia	$$ 8.40$

Let's first write an expression that represents the total price for

2

flats

of

petunias,

3

flats

of

daisies,

and

1

flat

of

begonias .

Total price = (2 \times 5.25) + (3 \times 7.65) + 8.40

To simplify this, we need to calculate the two products. We can start with

2 \times 5.25 .

To find it, we multiply just as we do with two whole numbers. At first, we ignore any decimal points.

Then we place the decimal point in the product by counting the number of decimal places in each factor.

We found that the first product is

3.66 .

Total price = (2 \times 5.25) + (3 \times 7.65) + 8.40 ⇕ Total price = 10.50 + (3 \times 7.65) + 8.40

Similarly, we can find the other product.

We found that the other product is equal to

22.95 .

Total price = 10.50 + (3 \times 7.65) + 8.40 ⇕ Total price = 10.50 + 22.95 + 8.40

Finally, we will add the decimals together. To add decimals, we line up the decimal points so that place-value positions correspond.

Now we add the decimals, just as we would with whole numbers, and place the decimal point in the answer.

We found that the total price of the flowers is

41.85

dollars.

Total price = 10.50 + 22.95 + 8.40 = 41.85

Finally, to find how much change should Jake receive if he pays with a

$ 50

bill, we will subtract the cost of the flowers,

41.85,

from

50 .

We found that Jake should receive

8.15

dollars of change.

Exercise

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