Calculating Tax in Word Problems

The video tutorial demonstrates how to calculate sales tax in a word problem. It begins by identifying key information, such as the price and tax percentage. The first step involves calculating the tax amount by converting the percentage to a decimal and multiplying it by the price. The second step is rounding the result to two decimal places, as is standard for monetary values. Finally, the rounded tax is added to the original price to find the total cost. The tutorial emphasizes understanding each step and applying mathematical operations accurately.

What is the initial cost of the gingerbread house before tax?

• $15.46

• $17.04

• $10.25

• $1.58

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CCSS.6.RP.A.3C

What is the sales tax rate applied to the gingerbread house?

• 5%

• 15%

• 20%

• 10.25%

How do you convert a percentage to a decimal for calculation?

• Move the decimal one place to the left

• Move the decimal two places to the right

• Add a zero at the end

• Move the decimal two places to the left

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CCSS.7.EE.B.3

What is the calculated tax amount before rounding?

• $1.50

• $1.58

• $1.58465

• $1.60

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CCSS.5.NBT.A.4

Why is it important to round the tax amount?

• To make it easier to calculate

• To increase the tax amount

• To match the format used in monetary transactions

• To reduce the tax amount

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CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Which digit do you look at to decide whether to round up or stay the same?

• The first digit after the decimal

• The last digit

• The second digit after the decimal

• The third digit after the decimal

What is the rounded tax amount added to the gingerbread house price?

• $1.55

• $1.58

• $1.50

• $1.60

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CCSS.6.NS.B.3

What is the final total cost Ms. Quintana will pay for the gingerbread house?

• $16.00

• $18.00

• $17.04

• $15.46

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CCSS.7.EE.B.3

What is the purpose of adding the tax amount to the original price?

• To find the total cost

• To estimate the savings

• To calculate the discount

• To determine the profit

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CCSS.7.EE.B.3

What are the three main steps in solving this tax calculation problem?

• Divide, Add, Subtract

• Multiply, Round, Add

• Calculate, Subtract, Multiply

• Round, Multiply, Subtract

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CCSS.7.EE.B.3