Solving Percent Equations: Key Concepts and Techniques

This video tutorial covers three types of percent equations. It begins with an introduction to key terms such as 'of', 'equal', 'what number', and 'percent'. The first type of equation discussed is 'what number is X% of Y', where multiplication is used after converting the percent to a decimal. The second type is 'X is Y% of what number', which involves division to isolate the variable. The final type is 'X is what percent of Y', requiring conversion from decimal to percent. Each type is explained with examples, demonstrating the step-by-step process to solve them.

What does the word 'of' signify in percent equations?

• Multiplication

• Division

• Subtraction

• Addition

Which symbol is used for the word 'is' in percent equations?

• =

• x

• +

• -

Tags

CCSS.8.EE.C.7B

In the equation 'What number is 25% of 60?', what is the first step?

• Subtract 25% from 60

• Convert 25% to a decimal

• Divide 60 by 25%

• Add 25% to 60

Tags

CCSS.6.RP.A.3C

What is 25% of 60?

• 20

• 18

• 15

• 12

Tags

CCSS.6.RP.A.3C

In the equation '425 is 85% of what number?', what is the variable representing the unknown number?

• A

• X

• Z

• Y

Tags

CCSS.6.EE.B.6

What is the base number if 425 is 85% of it?

• 400

• 500

• 450

• 550

Tags

CCSS.6.RP.A.3C

In the equation '38 is what percent of 5700?', what is the first step?

• Subtract 38 from 5700

• Add 38 to 5700

• Divide 38 by 5700

• Multiply 38 by 5700

What is the percentage if 38 is what percent of 5700?

• 66%

• 0.66%

• 67%

• 6.6%

How do you convert a decimal to a percentage?

• Multiply by 10

• Move the decimal point two places to the right

• Divide by 10

• Move the decimal point two places to the left

What does the line above a digit in a decimal indicate?

• The digit is incorrect

• The digit is rounded

• The digit repeats

• The digit is an integer

Tags

CCSS.5.NF.B.3