Calculating sales tax
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This document provides instructions for calculating sales tax by converting the tax percentage to a decimal, multiplying the purchase price by that decimal, and rounding the result to the nearest cent. An example is shown of calculating the 6.75% sales tax on a $16.99 CD purchase. Readers are then prompted to calculate the 6.25% sales tax on a $24.50 shirt. The correct answer of $1.53 is provided along with an encouragement to practice. Finally, five additional practice problems are presented with their answers.
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Let’s review!
This document reviews combining like terms and the distributive property through examples and analogies. It explains that like terms have the same variables and exponents, and can be combined by adding or subtracting the coefficients. Examples are provided such as 2x + 5x = 7x and 3bc - 8bc = -5bc. The document also explains that the distributive property involves distributing a term to each part of a binomial, as shown in the examples 2(3x - 4) = 6x - 8 and (5a + 3b)6 = 30a + 18b. An analogy compares combining like terms to combining people with the same last name.
Evaluating expressions
This document provides examples of how to evaluate mathematical expressions, with 6 unlabeled examples presented for the reader to work through without solutions provided. The document appears to be an educational resource focused on teaching how to evaluate different types of mathematical expressions.
Integers adding and subtracting
1) Adding integers follows the rules of keeping the sign if the integers have the same sign or taking the sign of the larger number if they have different signs.
2) Subtracting integers ignores the signs and subtracts the numbers, taking the sign of the larger integer.
3) More examples are provided to illustrate subtracting integers with the same or different signs, including cancelling out negatives.
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Calculating sales tax
- 1. Calculating Sales Tax Financial Management
- 2. To calculate sales tax: • Change the percent to a decimal example: 6.75% = .0675 (Remember to drop the % and move the decimal 2 places to the left.) • Multiply the purchase price by the decimal • Round your answer to the nearest cent
- 3. Example Sue buys a CD that costs $16.99 before sales tax. The sales tax is 6.75%. How much tax does Sue pay? • Change 6.75% to a decimal (.0675) • Multiply $16.99 times .0675 (1.147) • Round to the nearest cent 1.15 • Sue will pay $1.15 sales tax.
- 4. Your turn! Guillermo buys a shirt for $24.50. The sales tax is 6.25%. How much sales tax does Guillermo pay? 6.25% = $24.50 x = Sales tax is
- 5. Let’s see how you did! = .0625 = 1.531 Guillermo paid $1.53 sales tax. Good job!
- 6. Practice makes perfect! Try these: 1. Tax is 5.35%, purchase is $453.22 2. Tax is 6.05%, purchase is $36.98 3. Tax is 6.75%, purchase is $121.03 4. Tax is 4.15%, purchase is $1003.48 5. Tax is 6.12%, purchase is $56.99 Answers: $24.25, $2.24, $8.17, $41.64, $3.49
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