Percent Proportions

Front

What is a percent proportion?

Back

A percent proportion is a way to express a relationship between a part and a whole in terms of percentage, typically represented as part/whole = percent/100.

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How do you find what number a certain percentage is of?

Back

To find what number a certain percentage is of, divide the part by the percentage (in decimal form) and then multiply by 100.

Front

What is the formula to calculate a percentage of a number?

Back

The formula to calculate a percentage of a number is: (percentage/100) * total number.

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 the result by 100.

Front

What is the relationship between percentages, fractions, and decimals?

Back

Percentages, fractions, and decimals are different ways to represent the same value. A percentage is a fraction out of 100, a decimal is a fraction expressed in base 10.

Front

How do you calculate the percentage increase or decrease?

Back

To calculate percentage increase, use the formula: ((new value - old value) / old value) * 100. For decrease, use: ((old value - new value) / old value) * 100.

Front

What does it mean if 30 is 75% of a number?

Back

It means that 30 is three-quarters of that number, which can be found by dividing 30 by 0.75.

Front

How do you find the percentage when given a part and a whole?

Back

To find the percentage, divide the part by the whole and then multiply by 100.

Front

What is the formula for finding the whole when given a part and a percentage?

Back

The formula is: whole = part / (percentage/100).

Front

How do you express 20% as a decimal?

Back

To express 20% as a decimal, divide by 100, resulting in 0.20.