Solving Percent Problems with Proportions

The video tutorial explains how to solve percent problems using the percent proportion method. It covers setting up the proportion as part over whole equals percent over 100, and demonstrates solving for the part, whole, and percent with examples. The tutorial emphasizes using variables for unknowns and cross multiplication to find solutions.

What is the percent proportion formula?

• Whole over percent equals part over 100

• Part over percent equals whole over 100

• Whole over part equals percent over 100

• Part over whole equals percent over 100

In the percent proportion, what should you use to represent the unknown value?

• A fraction

• A symbol

• A variable

• A number

Tags

CCSS.6.RP.A.3C

If 30% of 7th graders visited the science center and there are 500 7th graders, how many visited the science center?

• 100

• 150

• 200

• 250

Tags

CCSS.6.RP.A.3C

What is the coefficient in the equation 100x = 15000?

• 15000

• x

• 100

• 1

Tags

CCSS.6.EE.A.2B

If there are 12 poodles at the park and they make up 15% of the dogs, how many dogs are at the park?

• 60

• 70

• 90

• 80

Tags

CCSS.6.RP.A.3C

In the equation 12 * 100 = 15x, what is the value of x?

• 60

• 70

• 80

• 90

If 25 out of 40 students said their favorite ice cream flavor was Vanilla, what percent is that?

• 50%

• 62.5%

• 55%

• 60%

In the equation 25 * 100 = 40x, what is the value of x?

• 62.5

• 60

• 55

• 50

What is the final step in solving a percent proportion problem?

• Multiplying both sides by the variable

• Dividing both sides by the coefficient

• Adding both sides by the variable

• Subtracting both sides by the coefficient

Tags

CCSS.6.EE.B.6

What method gives the same answers as the percent proportion method?

• Cross multiplication

• Equivalent ratios

• Decimal method

• Fraction method

Tags

CCSS.7.RP.A.2B