Percent Problems

Front

What is a percentage?

Back

A percentage is a fraction expressed as a part of 100. It represents how much of a whole is being considered.

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 * 0.20 = 10.

Front

What is the formula to find the total when given a percentage and the part?

Back

The formula is: Total = Part / (Percentage / 100). For example, if 20 is 40% of a total, the total is 20 / 0.40 = 50.

Front

How do you convert a fraction to a percentage?

Back

To convert a fraction to a percentage, divide the numerator by the denominator and then multiply by 100. For example, 1/4 = (1 ÷ 4) * 100 = 25%.

Front

What does it mean if a student scored 80% on a test?

Back

It means the student answered 80 out of 100 questions correctly, or the score is equivalent to 80 out of the total possible points.

Front

How do you find the discount price of an item?

Back

To find the discount price, multiply the original price by the discount percentage (in decimal form) to find the discount amount, then subtract that amount from the original price.

Front

What is the relationship between percentages and proportions?

Back

Percentages are a way to express proportions. A percentage represents a part of a whole in terms of 100, while a proportion compares two quantities.

Front

How do you find what percent one number is of another?

Back

To find what percent one number (A) is of another number (B), use the formula: (A / B) * 100. For example, to find what percent 72 is of 150, calculate (72 / 150) * 100 = 48%.

Front

What is the importance of understanding percentages in real life?

Back

Understanding percentages is important for making informed decisions in finance, shopping, statistics, and many other areas of daily life.

Front

How do you calculate the percentage increase or decrease?

Back

To calculate percentage increase: ((New Value - Old Value) / Old Value) * 100. For percentage decrease: ((Old Value - New Value) / Old Value) * 100.