Setting Up Percent Proportions

Front

What is a percent proportion?

Back

A percent proportion is an equation that states that two ratios are equal, where one ratio compares a part to a whole and the other compares a percent to 100.

Front

How do you set up a percent proportion for the question '18 is 40% of what number?'

Back

The proportion can be set up as 18/x = 40/100, where x is the unknown number.

Tags

CCSS.7.RP.A.2C

Front

What is the formula to find the percent when given a part and a whole?

Back

The formula is Percent = (Part/Whole) x 100.

Front

How do you convert a percent to a decimal?

Back

To convert a percent to a decimal, divide the percent by 100.

Front

What is the first step in solving the problem '43 is what percent of 60?'

Back

The first step is to set up the proportion: 43/60 = x/100.

Front

What does the term 'part' refer to in percent problems?

Back

The 'part' refers to the portion of the whole that is being compared to the whole.

Front

What does the term 'whole' refer to in percent problems?

Back

The 'whole' refers to the total amount or the entire quantity from which the part is taken.

Front

How do you solve the proportion 43/60 = x/100 for x?

Back

Cross-multiply to get 43 * 100 = 60 * x, then solve for x.

Tags

CCSS.7.RP.A.2C

Front

What is the relationship between percent, part, and whole?

Back

The relationship is defined by the equation: Percent = (Part/Whole) x 100.

Front

How do you find 90% of a number using a proportion?

Back

Set up the proportion x/number = 90/100 and solve for x.

Tags

CCSS.6.RP.A.3C