Percentage Calculations and Applications

This video tutorial covers the concept of percentages through various examples. It begins with a visual representation using a 10x10 grid to explain how percentages work. The tutorial then moves on to practical problems, such as calculating the percentage of bracelets made by two individuals, comparing student enrollments between grades, and comparing the number of students in band and choir. Additionally, it includes a cost comparison between breakfast and lunch. The video concludes by encouraging students to create their own real-world problems using percentages.

If a 10x10 grid represents 100%, what percentage is represented by a fully shaded grid plus an additional 25 shaded boxes?

• 100%

• 175%

• 125%

• 150%

In a model where 25% represents 10 students, how many students are represented by 125%?

• 30 students

• 40 students

• 50 students

• 60 students

Anna and Emily made 54 bracelets, needing 300 in total. What percentage of the total have they completed?

• 15%

• 18%

• 20%

• 25%

If Anna made 32 bracelets and Emily made 22, what percentage of Emily's production is Anna's?

• 68.75%

• 145.45%

• 50%

• 100%

What percentage of the 8th grade class is the 7th grade class if there are 750 7th graders and 625 8th graders?

• 100%

• 110%

• 120%

• 130%

If the 7th grade class exceeds 110% of the current 8th grade enrollment, will more teachers be needed next year?

• Not enough information

• Maybe

• No

• Yes

At Kent Middle School, if there are 104 students in the band and 80 in the choir, what percentage of the choir is the band?

• 140%

• 130%

• 100%

• 120%

If breakfast costs $1.25 and lunch costs $3.75, what percentage of the lunch cost is the breakfast cost?

• 50%

• 66.67%

• 25%

• 33.33%

What is the repeating decimal representation of 5/11 as a percentage?

• 40.40%

• 50.50%

• 54.54%

• 45.45%

Create a real-world problem using 83% and solve it. What could be a possible scenario?

• Finding tax rate

• Determining attendance

• Calculating discount

• All of the above