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Sales tax is calculated by finding the percent of the
total purchase.
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To find the amount of sales tax on a purchase, you
multiply the tax rate by the sum of the prices of the
items purchased.
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You will first need to change the amount of tax
from percent to the decimal equivalent.
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When changing the tax rate from a percent to a decimal, first change the percent to a fraction with a denominator
of 100.
6 % = 100
6= 0.06
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6 % =
Find the amount of tax on a purchase of $25.99 if
the tax rate is 6 %.
100
6= 0.06
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6 % = 100
6= 0.06
Using a calculator multiply $25.99 times 0.06 by
entering the following into the calculator:
25.99 X 0.06 =
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25.99 X 0.06 = 1.5594
Use the calculator to round 1.5594 to the hundredths
place by using the Fix function key.
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The Fix function key selects the calculator’s rounding
function and the 2 key tells the calculator how many
decimal places to round the number in the calculator
display.
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With the 1.5594 in the calculator display press the
Fix key and the 2 key.
1.5594 rounds to 1.56
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To find the total amount of your purchase including
tax, add the total amount of the items to be purchased to the calculated tax rate.
$25.99 + 1.56 = $27.55
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If the number displayed in the calculator is ever less than 2 decimal places in a money
amount, use the Fix function key to display the number
with 2 decimal places.
$159.9 = $159.90
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To find sales tax:
price X tax rate = Sales Tax
$8.55 X 0.05 = $0.43
To find total cost:
price + sales tax = Total Cost
$8.55 + $0.43 = $8.98
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If the tax rate contains a decimal or a fraction, change
the tax rate to a complex fraction and then to the
equivalent decimal.
5.8 % = = 0.058 100
8.5
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If the tax rate contains a decimal or a fraction, change
the tax rate to a complex fraction and then to the
equivalent decimal.
% = = 0.065
10021
62
16
100
5.6=