Percent Equivalents and Conversions

This video tutorial introduces the concept of percents, explaining how they are ratios comparing numbers to 100. It uses real-life examples, such as basketball free throw ratios, to illustrate how to convert ratios to percents using grid models. The tutorial also connects fractions and percents using bar models and demonstrates how to use benchmarks to simplify percent calculations. Finally, it provides practice problems to reinforce the concepts learned.

What is a percent?

• A number compared to 10

• A number compared to 50

• A number compared to 100

• A number compared to 1000

How do you convert a ratio to a percent using a grid model?

• Multiply the ratio by 10

• Divide the ratio by 10

• Write the ratio with a denominator of 100

• Add 100 to the ratio

Which player had the highest free throw ratio?

• Player 3

• Player 2

• Player 1

• All players had the same ratio

How do you find the percent equivalent of one-fourth using a bar model?

• Multiply by 2

• Divide by 4

• Multiply by 100

• Divide by 25

What is the percent equivalent of one-third?

• 50%

• 75%

• 25%

• 33.33%

What is the benchmark percent for one-tenth?

• 10%

• 5%

• 15%

• 20%

How can benchmarks help in estimating percents?

• By simplifying calculations

• By complicating the process

• By providing exact values

• By increasing the number of steps

What is the percent equivalent of nine-tenths?

• 80%

• 85%

• 90%

• 95%

How do you convert a ratio to a percent?

• Add 100 to the ratio

• Subtract 10 from the ratio

• Multiply the ratio by 50

• Write the ratio as a fraction with a denominator of 100

What is the percent equivalent of two-fifths?

• 20%

• 40%

• 30%

• 50%