Percent Proportions

Front

What is a percent?

Back

A percent is a way to express a number as a fraction of 100. It is denoted by the symbol '%'. For example, 50% means 50 out of 100.

Front

How do you calculate the percent of a quantity?

Back

To calculate the percent of a quantity, divide the part by the whole and then multiply by 100. Formula: (Part/Whole) x 100.

Front

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

Back

To find the missing part, use the formula: Part = (Percent/100) x Whole.

Front

If a student scores 75% on a test with 40 questions, how many questions did they answer correctly?

Back

30 questions. (75/100) x 40 = 30.

Front

What does it mean if a student answered 90% of the questions correctly?

Back

It means the student answered 90 out of every 100 questions correctly.

Front

How do you find the percent of seats that are empty in a theater?

Back

Subtract the number of sold seats from the total seats, then divide by total seats and multiply by 100.

Front

What is 20% of 50?

Back

10. (20/100) x 50 = 10.

Front

How do you convert a fraction to a percent?

Back

To convert a fraction to a percent, divide the numerator by the denominator and multiply by 100.

Front

What is the percent increase if a price goes from $50 to $75?

Back

50%. Percent Increase = ((New Price - Old Price) / Old Price) x 100 = ((75 - 50) / 50) x 100 = 50%.

Front

If 15 out of 60 students passed a test, what percent passed?

Back

25%. (15/60) x 100 = 25%.