Percent Word Problems

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, 25% means 25 out 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 20% of 50, calculate 50 x 0.20 = 10.

Front

What does it mean if 20% of a group voted in favor?

Back

It means that out of the total group, 20 out of every 100 members supported the decision.

Front

If 36 quarters represent 45% of a collection, how do you find the total number of coins?

Back

Set up the equation: 0.45 * total coins = 36. Solve for total coins: total coins = 36 / 0.45 = 80.

Front

What is the formula to find the total number of items when given a percentage?

Back

Total items = Number of items / (Percentage in decimal form). For example, if 25% of teachers are math teachers and there are 50 math teachers, total teachers = 50 / 0.25 = 200.

Front

How do you find 32% of 125 packs of gum?

Back

Multiply 125 by 0.32: 125 x 0.32 = 40 packs of mint gum.

Front

If a test has 20 questions and a student answers 80% correctly, how many questions did they get right?

Back

Calculate 80% of 20: 20 x 0.80 = 16 questions correct.

Front

What is a tape diagram and how is it used in percent problems?

Back

A tape diagram is a visual representation that helps to illustrate the relationship between parts and the whole, making it easier to solve percent problems.

Front

What does it mean if 25% of teachers teach basic math?

Back

It means that out of every 100 teachers, 25 are basic math teachers.

Front

How do you convert a percentage to a decimal?

Back

To convert a percentage to a decimal, divide by 100. For example, 75% becomes 0.75.