Percent of Change

Multiple Choice

Which of the following is equivalent to 0.33 as a percent?

• 3.3%

• 33%

• 0.33%

• 330%

Multiple Choice

Which of these are 49% written as a decimal?

• 49.00

• 4.9

• 0.49

• 0.049

Open Ended

Why do you think understanding percent of change is important in real-life situations?

Multiple Choice

What is the definition of percent of change, and how is percent of increase determined?

• Percent of change is a ratio comparing the change in quantity to the original amount, and percent of increase is when the original amount increases.

• Percent of change is the difference between two numbers, and percent of increase is when the new amount is less than the original.

• Percent of change is a ratio comparing the new amount to the original amount, and percent of increase is when the original amount decreases.

• Percent of change is the sum of two quantities, and percent of increase is when the new amount is equal to the original.

Multiple Select

Which of the following statements are true about percent of increase?

(More than 1 answer)

• It compares the change in quantity to the original amount.

• It is written as a percent.

• It only applies when the original amount decreases.

• It is used when the original amount increases.

Fill in the Blanks

A percent of change is a ratio, written as a percent, which compares the change in amount to the

.

Multiple Select

Which of the following are needed to calculate the percent of increase?

• Original amount

• Amount of increase

• New amount

• Percent of decrease

Multiple Choice

What is considered the 'whole' when calculating the percent of increase?

• The original amount

• The new amount

• The amount of increase

• The difference between new and original amounts

Fill in the Blanks

The new enrollment at the school is

students.

Multiple Choice

Which of the following correctly identifies the part and the whole in the context of percent of increase?

• Original amount is the whole, amount of increase is the part

• New amount is the whole, original amount is the part

• Amount of increase is the whole, new amount is the part

• Original amount is the part, new amount is the whole

Multiple Choice

If the percent of increase in student enrollment is 20%, what was the original number of students if the new number is 780?

• 650

• 130

• 156

• 780

Fill in the Blanks

Fill in the blank: The percent of increase is found by dividing the amount of increase by the

amount.

Open Ended

When finding percent of change, why is it important that the two quantities have the same unit of measure?

Open Ended

Explain the steps involved in finding the percent of increase using equivalent ratios.

Open Ended

Why is the whole 650, and not 780?

Multiple Choice

A certain brand of shampoo contains 12 ounces in a bottle. The company decides to redesign the shape of the shampoo bottle. The new type of bottle contains 15 ounces of shampoo. What is the percent of increase in the amount of shampoo the new bottle contains?

• 10%
• 20%
• 30%
• 25%

Open Ended

What are examples where you might see percent of change in everyday life?

Use whole sentences. (Now, _____ costs_______)

Fill in the Blanks

Before you can find the percent of increase, what value do you need to calculate (find)?

Multiple Select

Which of the following steps are necessary to find the percent of increase?

• Identify the part and the whole

• Multiply the original amount by 2

• Write the part-to-whole ratio

• Divide the part by the whole

Multiple Choice

What is the percent of increase in the cost of a gallon of gas if the price rose from $1.50 to $3.30?

• 80%

• 100%

• 120%

• 150%

Fill in the Blanks

Frankie calculated that she would need 9.5 yards of wallpaper to decorate her room. The wallpaper she chose had a large pattern, so instead she needed 13 yards of that paper. What is the percent of increase, rounded to the nearest percent, in the amount of wallpaper she needs?

(shift 5 makes the %)

Multiple Select

Which of the following statements are true about percent of increase?

• It compares the change in quantity to the original amount.

• It is written as a percent.

• It only applies when the original amount decreases.

• It is used when the original amount increases.

Fill in the Blanks

Jemma's proportion of correct answers on a test was 0.8. What percent of the answers did she get correct?

Multiple Choice

Suppose the cost of a gallon of gas still increased by $1.80, but the original amount was $2.00 instead of $1.50. Would the percent of increase still be 120%?

• Yes, the percent of increase would be 120%.
• No, the percent of increase would be 100%.

• No, the percent of increase would be 150%.

• No, the percent of increase would be 90%.

Open Ended

Reflecting on today's lesson about percent of change, what is one real-life situation where you might use percent of change?

Open Ended

How would you explain the concept of percent of change to a friend who missed today's lesson?