Rates, Ratios, Percentages

Front

What is a ratio?

Back

A ratio is a comparison of two quantities by division. It shows how many times one value contains or is contained within the other.

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How do you simplify a ratio?

Back

To simplify a ratio, divide both terms by their greatest common divisor (GCD).

Front

What is a percentage?

Back

A percentage is a way of expressing a number as a fraction of 100. It is denoted using the symbol '%'. For example, 50% means 50 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 * 0.20 = 10.

Front

What is the formula to find the percentage increase?

Back

Percentage Increase = ((New Value - Original Value) / Original Value) * 100.

Front

What is the formula to find the percentage decrease?

Back

Percentage Decrease = ((Original Value - New Value) / Original Value) * 100.

Front

How do you convert a fraction to a percentage?

Back

Front

What is a rate?

Back

A rate is a specific kind of ratio that compares two different kinds of quantities, often expressed per unit of time, distance, or other measures.

Front

How do you find the equivalent ratio?

Back

To find an equivalent ratio, multiply or divide both terms of the ratio by the same non-zero number.

Front

What is the simplest form of a ratio?

Back

The simplest form of a ratio is when the two quantities are expressed in the smallest whole numbers possible.