Converting Between Fractions, Decimals, and Percentages

Professor Dave explains how to convert between fractions, decimals, and percentages. He demonstrates converting 30% to a fraction and a decimal, and provides tips for direct conversion between percentages and decimals. Practical applications, such as calculating sales tax, are discussed. The video also covers converting decimals to percentages and fractions to percentages, and concludes with an exercise on ordering values using conversions.

What is the fraction equivalent of 30%?

• 3/10

• 1/3

• 30/100

• 10/3

How do you convert 30% to a decimal?

• 3.3

• 0.03

• 3.0

• 0.3

What is the decimal representation of an 8.25% sales tax?

• 0.825

• 0.00825

• 0.0825

• 8.25

How do you convert a decimal to a percentage?

• Move the decimal two places to the right

• Divide by 100

• Move the decimal one place to the left

• Multiply by 10

What is the percentage form of 0.84?

• 840%

• 0.84%

• 84%

• 8.4%

How can you convert 3/5 to a percentage?

• 60%

• 30%

• 50%

• 75%

What is the decimal equivalent of 3/5?

• 0.5

• 0.3

• 0.8

• 0.6

Which of the following is the correct order from least to greatest: 45%, 21/50, 0.43?

• 21/50, 45%, 0.43

• 21/50, 0.43, 45%

• 0.43, 21/50, 45%

• 45%, 0.43, 21/50

What is the percentage form of 21/50?

• 84%

• 42%

• 21%

• 50%

How do you convert 0.43 to a percentage?

• 43%

• 430%

• 0.43%

• 4.3%