Percents & Percent Proportions

What is the relationship between fractions, decimals, and percents?

• They are completely unrelated concepts.

• They are different ways to represent the same value.

• They are only used in geometry.

• They are only applicable to whole numbers.

What is 15% of 200?

• 20

• 25

• 30

• 35

What is the formula for finding the percent of a number?

• Percent = (Part / Whole) x 100.

• Percent = (Whole / Part) x 100.

• Percent = Part + Whole.

• Percent = (Part - Whole) x 100.

What is 10% of 50?

• 3

• 5

• 7

• 10

How do you set up a percent proportion?

• Set up the proportion as: part/whole = percent/100.

• Set up the proportion as: part/whole = 100/percent.

• Set up the proportion as: whole/part = percent/100.

• Set up the proportion as: percent/whole = part/100.

What is a percent?

• A ratio expressed as a fraction of 100, representing a part of a whole.

• A way to measure temperature in Celsius.

• A method of calculating distance in kilometers.

• A type of financial interest rate.

If 26 is 5% of a number, how do you find that number?

• Multiply 26 by 20

• Add 5% to 26

• Divide 26 by 0.05

• Subtract 5% from 26

What is the percent decrease formula?

• Percent decrease = ((Original Value - New Value) / Original Value) x 100.

• Percent decrease = ((New Value - Original Value) / Original Value) x 100.

• Percent decrease = (New Value / Original Value) x 100.

• Percent decrease = (Original Value - New Value) x 100.

How do you calculate a percent of a number?

• Multiply the number by the percent in decimal form.

• Add the percent to the number.

• Divide the number by the percent.

• Subtract the percent from the number.

What is a percent proportion?

• A method to calculate the area of a circle.

• An equation that shows two ratios are equal, often used to solve percent problems.

• A technique for converting fractions to decimals.

• A formula for finding the average of a set of numbers.