Exploring the Concept of Percentages

This video tutorial introduces percentages, explaining their importance in real life, such as calculating sales tax and discounts. It describes percentages as fractions with 100 as the denominator and demonstrates converting percentages to fractions and decimals. The video provides examples and a simple trick for converting percentages to decimals, emphasizing the ease of understanding percentages once fractions are mastered. The tutorial concludes with a summary and encourages viewers to practice exercises to solidify their understanding.

What is a percentage essentially defined as in mathematics?

• An algebraic expression

• A complex number

• A special fraction with 100 as the denominator

• A type of decimal

What does the prefix 'per' in 'percent' signify?

• Subtracted from

• Divided by

• For each

• Multiplied by

What fraction does 25% represent?

• 250/1000

• 2.5/100

• 25/100

• 25/10

What does the root word 'cent' in 'percent' mean?

• One

• Ten

• Hundred

• Thousand

What does 0% equate to as a fraction?

• 0/1

• 1/100

• 0/100

• 1/0

What is the value of 100% as a fraction?

• 100/1

• 1/100

• 100/100

• 10/10

How do you convert 75% to a decimal?

• 0.75

• 7.5

• 0.075

• 75

How is a percentage converted into a decimal?

• Divide by 100

• Multiply by 100

• Add 100

• Subtract 100

What decimal does 142% convert to?

• 0.142

• 142

• 1.42

• 14.2

If you have a decimal 0.38, what is it as a percentage?

• 0.38%

• 380%

• 38%

• 3.8%