Converting Between Fractions, Decimals, and Percentages

This video introduces Unit 4, focusing on percents and scaling. It begins with a review of converting fractions, decimals, and percentages, using visual aids to represent fractions over 100. The video provides step-by-step instructions for converting between these forms and includes practice problems to reinforce learning. Advanced examples demonstrate simplification techniques, and the session concludes with mental math exercises to enhance understanding of percentages.

What is the main focus of Unit 4?

• Geometry and Shapes

• Percents and Scaling

• Statistics and Probability

• Algebra and Equations

How many boxes should be filled in a 10x10 grid to represent 30/100?

• 30

• 40

• 20

• 10

What is the decimal form of the fraction 1/4?

• 0.1

• 0.75

• 0.25

• 0.5

How do you convert a decimal to a percentage?

• Divide by 100

• Divide by 10

• Multiply by 10

• Multiply by 100

What is the simplest fraction form of 50%?

• 1/10

• 1/4

• 1/2

• 1/5

What is the percentage form of the decimal 0.05?

• 0.05%

• 0.5%

• 5%

• 50%

What is 50% of 20?

• 5

• 10

• 20

• 15

What is 25% of 48?

• 12

• 10

• 20

• 15

21 is what percent of 210?

• 15%

• 10%

• 20%

• 5%

450 is what percent of 900?

• 25%

• 50%

• 75%

• 100%