Calculating Percentages and Ratios

The video tutorial covers converting fractions to percentages. It begins with a trivia question about sunken ships, followed by the lesson objective of writing fractions as percentages. A sports example using Tom Brady's pass completion is used to illustrate the concept. Key concepts such as ratios and percentages are explained, and a step-by-step guide is provided for converting fractions to percentages. The video includes practice problems and concludes with the answer to the trivia question and a summary of the lesson.

What is the main topic of today's lesson?

• Converting percentages to fractions

• Solving algebraic equations

• Understanding geometric shapes

• Converting fractions to percentages

What is the target of today's lesson?

• 4.6 B

• 4.6 D

• 4.6 A

• 4.6 C

If Tom Brady completed 34 out of 50 passes, what percentage did he complete?

• 64%

• 66%

• 68%

• 70%

What is a ratio?

• A comparison between two quantities by subtraction

• A comparison between two quantities by division

• A comparison between two quantities by multiplication

• A comparison between two quantities by addition

How can a ratio be expressed when compared to 100?

• As a fraction

• As a decimal

• As a whole number

• As a percentage

What is 67 out of 100 as a percentage?

• 67%

• 87%

• 76%

• 97%

What is the first step in converting a fraction to a percentage using a calculator?

• Subtract 100 from the fraction

• Add 100 to the fraction

• Divide the numerator by the denominator

• Multiply the fraction by 100

After dividing the fraction, what is the next step to find the percentage?

• Multiply by 10

• Move the decimal two places to the right

• Move the decimal two places to the left

• Divide by 10

What is 23/40 as a percentage?

• 59.5%

• 60.5%

• 58.5%

• 57.5%

What is the manual method for converting 12/48 to a percentage?

• Multiply by 100

• Divide 12 by 48 and move the decimal

• Add 48 to 12 and divide by 100

• Subtract 12 from 48 and multiply by 100