find the discount
find the sales tax
adding with decimals
subtracting with decimals
sales tax and discounts
100

20% off $17.99 

answers: $14.39

100

$13.78 plus 5% tax

$14.47

100

115.48 + 6.92 =

$122.40

100

$39.00 - 9.75 =

$29.25

100

When you find a discount do you add, subtract, multiply or divide?

subtract

200

40% off $ 7.25, what is the total price to pay? 

$4.35

200

$53.00 plus 6% tax

$56.18

200
$349 + $22.69 =
$371.69
200
$35 - $14 =
$21
200

when you find sales tax do you add, subtract, multiply or divide the original price?\\hint: step # 2

add

300

10% of $358.79, what is the total price?

$ 322.91

300

$18.45 and 4.5% tax, whats the total price?

$19.28

300
300 + 160.50 =
$460.50
300
16.99 - .86 =
$16.14
300

Explain how to find where the decimal goes when you are multiplying a number like 3.2 X 2.5 =

There are 2 places (numbers) behind the decimal in the problems, so you move the decimal 2 places to the left in your answer.

400

54% increase of $16.70, what is the total price?

$25.71

400

$22.65 and 7% tax, whats the total cost?

$24.24

400
620.75 + 25.25 =
$646
400
-$56.18 - 3.18=
$59.36
400

When adding or subtracting decimals what must you do before you fill in the numbers? Hint: like buttons on a shirt

line up the decimals

500

80% off $ 9.95

$ 1.99

500

Charlene's lunch bill was $18.70. Estimate the total cost for lunch with 5% tax and a 15% tip.

$22.58

500

190 + -16.77 =

$173.23

500

-167.45 - 28.54 =

$-195.99

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