Practice Using & Converting 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 convert a percentage to a decimal?

Back

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

Front

How do you convert a decimal to a percentage?

Back

To convert a decimal to a percentage, multiply the decimal by 100. For example, 0.5 becomes 50%.

Front

What does it mean if 75% of a group has a certain characteristic?

Back

It means that 75 out of every 100 members of the group have that characteristic.

Front

What is 50% of 200?

Back

100

Front

How do you find the percentage of a number?

Back

To find the percentage of a number, multiply the number by the percentage (as a decimal). For example, to find 20% of 50, calculate 50 * 0.20 = 10.

Front

What is the decimal equivalent of 100%?

Back

1.0

Front

If 30% of a class are girls, what fraction of the class are girls?

Back

30% can be expressed as 30/100, which simplifies to 3/10.

Front

What is 10% of 50?

Back

5

Front

Convert 250% into a decimal number.

Back

2.5