Percent Proportion Word Problems

Front

What is the formula to calculate the percentage of a part compared to a whole?

Back

Percentage = (Part / Whole) × 100

Front

If a student answers 15 out of 20 questions correctly, what percent did they get right?

Back

75% (15/20 × 100 = 75%)

Front

What does it mean if 40% of a group is a certain color?

Back

It means that 40 out of every 100 members of the group are that color.

Front

How do you find 20% of a number?

Back

Multiply the number by 0.20 (or divide by 5).

Front

If there are 50 jellybeans and 30% are red, how many red jellybeans are there?

Back

15 red jellybeans (50 × 0.30 = 15).

Front

What is the relationship between fractions and percentages?

Back

A percentage is a fraction out of 100.

Front

If a team wins 80% of its games, what does that mean?

Back

It means the team won 80 out of every 100 games played.

Front

How do you convert a fraction to a percentage?

Back

Divide the numerator by the denominator and multiply by 100.

Front

What is the percentage of yellow marbles if there are 30 yellow out of 60 total marbles?

Back

50% (30/60 × 100 = 50%)

Front

If a class has 25 students and 12 are girls, what percent of the class are girls?

Back

48% (12/25 × 100 = 48%)