Conversions 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 a comparison of values using these conversions.

What is the fraction equivalent of thirty percent?

• 10/30

• 1/3

• 30/100

• 3/10

How do you convert a percentage to a decimal?

• Divide by 10

• Move the decimal point two places to the right

• Multiply by 10

• Move the decimal point two places to the left

What is the decimal form of 8.25%?

• 0.00825

• 8.25

• 0.0825

• 0.825

How do you convert a decimal to a percentage?

• Add 100

• Multiply by 100

• Divide by 100

• Move the decimal point two places to the left

What is the percentage form of 0.84?

• 8.4%

• 84%

• 0.84%

• 840%

What is the decimal equivalent of three-fifths?

• 0.8

• 0.5

• 0.3

• 0.6

What is the percentage equivalent of three-fifths?

• 80%

• 30%

• 50%

• 60%

Why is it important to understand conversions between fractions, decimals, and percentages?

• They are only used in math class

• They are used in different scenarios

• They are only used in science

• They are not important

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

• 21/50, 45%, 0.43

• 45%, 0.43, 21/50

• 0.43, 21/50, 45%

• 21/50, 0.43, 45%

What is the fraction form of 43%?

• 43/10

• 0.43/1

• 4.3/10

• 43/100