Percentage Calculations and Comparisons

Mr. Holcomb presents a lesson on comparing quantities using percentages. The video includes exercises on calculating percentages in various contexts, such as student enrollment, bracelet production, and cost comparisons. The lesson emphasizes understanding parts and wholes in percentage calculations and provides real-world examples to illustrate these concepts.

If a 10x10 grid represents 100%, what percentage does a single square represent?

• 0.1%

• 100%

• 1%

• 10%

Anna and Emily made 54 bracelets over the weekend. If they need to make 300 in total, what percentage have they completed?

• 30%

• 18%

• 25%

• 20%

Emily made 22 bracelets, and Anna made 32. What percentage of Anna's production is Emily's?

• 75%

• 70%

• 68.75%

• 80%

If Anna's production is 32 bracelets, what percentage of Emily's production is this?

• 145.45%

• 155%

• 160%

• 150%

There are 750 students in the seventh grade and 625 in the eighth grade. What percentage is the seventh grade of the eighth grade?

• 100%

• 130%

• 110%

• 120%

If the seventh grade enrollment exceeds 110% of the eighth grade, will more teachers be needed?

• No, because it's a 10% increase

• Yes, because it's a 20% increase

• No, because it's a 5% increase

• Yes, because it's a 30% increase

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

• 120%

• 130%

• 140%

• 150%

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

• 66.67%

• 50%

• 33.33%

• 25%

A computer is on sale for $398.40, which is 83% of its original price. What was the original price?

• $520

• $480

• $500

• $450

If a sale price is 83% of the original price, what percentage discount was given?

• 17%

• 20%

• 10%

• 15%