Percentages

Front

What is a percentage?

Back

A percentage is a way of expressing a number as a fraction of 100. It is often used to compare proportions.

Front

How do you calculate the percentage of a part compared to a whole?

Back

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

Front

What is 50% of 180?

Back

90

Front

If there are 4 girls in a class of 16 students, what percent of the class are boys?

Back

75% (There are 12 boys, which is 12/16 = 0.75 or 75%).

Front

What is 6% as a fraction?

Back

6/100

Front

How do you convert a percentage to a decimal?

Back

To convert a percentage to a decimal, divide by 100. For example, 25% = 0.25.

Front

What is 78 as a percentage of 450?

Back

17% (78/450 = 0.1733, which is approximately 17%).

Front

What is the formula to find the percentage increase?

Back

Percentage Increase = ((New Value - Old Value) / Old Value) x 100.

Front

How do you find 25% of a number?

Back

To find 25% of a number, divide the number by 4.

Front

What is the relationship between fractions and percentages?

Back

Fractions can be converted to percentages by multiplying by 100. For example, 1/4 = 0.25 = 25%.