Understanding Tax Calculation and Rounding

This video tutorial explains how to calculate the exact tax on a sale item using a given tax rate, and then demonstrates how to round the tax to the nearest dollar and cent. The process involves converting the tax rate from a percentage to a decimal, multiplying it by the sale price to find the exact tax, and applying rounding rules to determine the final amounts.

What is the main objective of the video?

• To learn how to calculate discounts

• To determine the exact tax and round it

• To calculate interest rates

• To understand profit and loss

How do you convert a percentage to a decimal?

• Subtract 10 from the percentage

• Drop the percent sign and divide by 100

• Add a zero at the end

• Multiply by 100

What is the decimal form of 8.2%?

• 0.082

• 0.82

• 8.2

• 0.0082

What is the exact tax on an item priced at $614.99 with an 8.2% tax rate?

• $50.42

• $51.00

• $50.43

• $50.42918

When rounding to the nearest dollar, what do you do if the digit to the right is 4 or less?

• Subtract 1 from the digit

• Round up

• Round down

• Add 1 to the digit

If the exact tax is $50.42918, what is the rounded amount to the nearest dollar?

• $50.50

• $51

• $50

• $49

What is the rule for rounding to the nearest cent if the digit to the right is 9?

• Subtract 1

• Round down

• Round up

• Keep the same

What is the rounded tax amount to the nearest cent for $50.42918?

• $50.42

• $50.43

• $50.44

• $50.40

What is the midpoint value when rounding to the nearest cent between $50.42 and $50.43?

• $50.425

• $50.42

• $50.43

• $50.424

What should you do if the exact tax is exactly at the midpoint when rounding?

• Always round down

• Always round up

• Keep the same

• Choose randomly