Percent pro

The Percent Proportion

This set-up can be used to solve ANY percentage problem that gives you 2 numbers (the 100 is automatically input).

What is 25% of 300?

The 25 has a % sign, so it goes above the 100.

The 300 has OF in front, so it goes on the bottom left.

What is 25% of 300?

Next, we cross-multiply the numbers diagonal from each other.

300 x 25 = 7500

And then divide by the last number (does not have someone diagonal to it).

7500 / 100

Two steps; Multiply and Divide to get your answer ... 75

​Dividing by 100..... move decimal 2 times right

Multiple Choice

What is 33% of 187

• 17.6

• 61.71

• 566.67

• 75.21

Poll

Optometrists estimate that up to 75% of adults wear eyeglasses or contacts. In a lecture hall, 50 college students are wearing either glasses or contacts. About how many students are in the hall?

WHAT'S THE MISSING PIECE OF INFORMATION?

• PART

• WHOLE

• A PERCENT

Multiple Choice

Identify what you are solving for in this situation: 20% of students in class are wearing red. There are 30 students in the class. How many are wearing red?

• Finding the part

• Finding the whole

• Finding a percent

Multiple Choice

Identify what you are solving for in this situation: Five out of 10 cake slices have been eaten. What percent of the cake was eaten?

• Finding the part

• Finding the whole

• Finding the percent

Multiple Choice

Identify what you are solving for in this situation: 300 students have pets that attend school. If 30% of all students have pets, how many students are there in the school?

• finding the part

• finding the whole

• finding the percent

Multiple Choice

Martin's class has 28 students in it. 25% of those students are home sick today. How many students are home sick?

• 7

• 11

• 4

• 13

Multiple Choice

A restaurant has a sign by the door that says "Maximum occupancy: 75 people." What percent of its capacity is 9 people?

• 9%

• 75%

• 12%

• 21%

Multiple Choice

A 20 ounce drink contains 80% fruit juice. How many ounces of fruit juice are in the drink?

• 16 ounces

• 8 ounces

• 14 ounces

• 8.2 ounces

Multiple Choice

60% of toys at a toy store require batteries. If there are 42 toys that require batteries, then how many toys are there altogether?

• 40%

• 70

• 60

• 72