Part vs. Whole Lesson

Multiple Choice

Which of the following best describes a percent proportion problem?

• A problem where you compare two ratios, one involving a percent.

• A problem where you add two percentages together.

• A problem where you multiply two numbers to get a percent.

• A problem where you divide a number by 100.

Labelling

The zoo has 40 dispensers to buy food to feed the animals. Thirty percent of the dispensers are for land animals. How many food dispensers are for land animals?

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Part

Percent

Whole

Labelling

Mr. Torres tells his class that when they have completed the assignment they may read. Twelve students are reading, which is 40% of the class. How many students are in the class?

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Percent

Whole

Part

Labelling

Of the 250 visitors on Friday, 54% of them stayed until the zoo closed. How many visitors stayed until the zoo closed?

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Whole

Part

Percent

Labelling

Zaine made a 72% on his math test. If he got 18 problems correct, how many questions were on the test?

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Whole

Percent

Part

Fill in the Blank

The zoo has 40 dispensers to buy food to feed the animals. Thirty percent of the dispensers are for land animals. How many food dispensers are for land animals?

Fill in the Blank

Mr. Torres tells his class that when they have completed the assignment they may read. Twelve students are reading, which is 40% of the class. How many students are in the class?

Fill in the Blank

Zaine made a 72% on his math test. If he got 18 problems correct, how many questions were on the test?

Fill in the Blank

An employee’s starting salary is $36,000. The employee will receive a 3% increases in salary after completing several months of training. What is the amount of employee’s salary increase after the training?

Fill in the Blank

In a park, 40% of the trees change color in the fall. There are 500 trees in the park. How many trees in the park change color in the fall?

Fill in the Blank

Of the 250 visitors on Friday, 54% of them stayed until the zoo closed. How many visitors stayed until the zoo closed?

Multiple Choice

When solving percent proportion problems, what is the difference between finding the part and finding the whole?

• Finding the part means calculating a portion of the total based on the percent.

• Finding the whole means calculating the total when given a part and the percent.

• Finding the part means multiplying the percent by the whole.

• Finding the whole means dividing the part by the percent.

Open Ended

Reflecting on today's lesson about percent proportion problems, what is one strategy you found helpful for identifying whether you are solving for the part or the whole?

Multiple Choice

Which of the following steps is NOT part of the process for solving proportion problems as outlined in the images?

• Identify the given information

• Create/label proportion formula

• Guess the answer

• Plug in/Solve