Percent Word Problems

Front

What is a percent?

Back

A percent is a ratio expressed as a fraction of 100. It represents how much of something there is out of a total of 100.

Front

How do you calculate a percentage of a number?

Back

To calculate a percentage of a number, multiply the number by the percentage (in decimal form). For example, to find 30% of 60, calculate 60 x 0.30 = 18.

Front

What does it mean if 30% of a group is a certain type?

Back

It means that out of every 100 members of the group, 30 members belong to that type.

Front

If 32% of 125 packs of gum are mint-flavored, how many packs are mint-flavored?

Back

32% of 125 is calculated as 125 x 0.32 = 40 packs.

Front

How do you find the total number of items if you know the percentage and the number of items that represent that percentage?

Back

Divide the number of items by the percentage (in decimal form). For example, if 36 quarters are 45%, then total coins = 36 / 0.45 = 80 coins.

Front

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

Back

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

Front

If Sarah earns $20 a day and spends 30% of it, how much does she spend?

Back

30% of $20 is calculated as $20 x 0.30 = $6.

Front

How do you convert a fraction to a percentage?

Back

To convert a fraction to a percentage, divide the top number (numerator) by the bottom number (denominator) and multiply by 100.

Front

What is a tape diagram?

Back

A tape diagram is a visual model that uses rectangles to represent numbers and their relationships, often used to solve percentage problems.

Front

If a family drives 280 miles out of a total of 400 miles, what percent have they driven?

Back

To find the percentage, use the formula: (280/400) x 100 = 70%.