Solving Percent Word Problems Effectively

This video tutorial from Mumu Math and Science focuses on solving percent word problems using the proportion method: part over total equals percent divided by 100. The instructor provides three examples: calculating the total number of lightbulbs installed, determining the number of students who like pop music, and finding the percentage of students wearing hoodies. Each example demonstrates the step-by-step process of setting up the proportion, performing cross-multiplication, and solving for the unknown variable. The video emphasizes the importance of identifying the part, total, and percent in each problem.

What formula is used to solve percent word problems?

• Total over part equals 100 over percent

• Part over total equals percent over 100

• None of the above

• Percent over 100 equals total over part

Tags

CCSS.6.RP.A.3C

How do you determine the 'part' in a percent word problem?

• Subtract the percentage from the total

• Add the percentage to the total

• Divide the total by the percentage

• Multiply the total by the percentage

Tags

CCSS.6.RP.A.3C

In the proportion part/total = percent/100, what does 'total' represent?

• None of the above

• The fraction of the set

• The whole or complete set in the context

• The percentage expressed as a fraction

If 45 lightbulbs represent 30% of the total, how many lightbulbs are needed for the entire job?

• 150 lightbulbs

• 135 lightbulbs

• 100 lightbulbs

• 200 lightbulbs

Tags

CCSS.6.RP.A.3C

What operation is used to isolate the variable in a proportion equation?

• Division

• Multiplication

• Addition

• Subtraction

Tags

CCSS.6.EE.B.7

How is the cross-product used in solving percent word problems?

• Add the products of diagonals

• Subtract the products of diagonals

• Multiply diagonally and equate the products

• Divide the products of diagonals

Tags

CCSS.7.RP.A.3

What is the total number of students if 560 students represent 70%?

• 600 students

• 800 students

• 900 students

• 700 students

Tags

CCSS.6.RP.A.3C

If 800 is the total school population, how many students like pop music when given a 70% preference rate?

• 560 students

• 600 students

• 500 students

• 700 students

Tags

CCSS.6.RP.A.3C

What percentage of students wore hoodies if 6 out of 30 students did?

• 20%

• 10%

• 25%

• 15%

What is the result of 6 times 100 divided by 30?

• 20

• 18

• 22

• 24