Decimals, Fractions, Percents, Ratios, Rates, Proportions

Front

What is a decimal?

Back

A decimal is a number that represents a fraction whose denominator is a power of ten, expressed using a decimal point. For example, 0.5 is a decimal that represents 1/2.

Front

How do you convert a fraction to a decimal?

Back

Front

What is a percent?

Back

A percent is a way of expressing 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 convert a decimal to a percent?

Back

To convert a decimal to a percent, multiply the decimal by 100 and add the percent symbol. For example, 0.75 x 100 = 75%.

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. For example, the ratio of 2 to 3 can be written as 2:3.

Front

How do you simplify a ratio?

Back

To simplify a ratio, divide both terms by their greatest common divisor (GCD). For example, the ratio 4:8 can be simplified to 1:2.

Front

What is a rate?

Back

A rate is a specific kind of ratio that compares two different units. For example, speed is a rate that compares distance to time, such as 60 miles per hour.

Front

What is a proportion?

Back

Front

How do you solve a proportion using cross multiplication?

Back

Front

What is 1/4 written as a percent?

Back

1/4 written as a percent is 25%.