Percent Expressions

Front

What is a percent expression?

Back

A percent expression is a way to represent a number as a fraction of 100. It is often used to describe proportions, increases, decreases, and comparisons.

Front

How do you calculate a 10% increase on a number?

Back

To calculate a 10% increase on a number, multiply the number by 0.10 and then add that result to the original number.

Front

What does multiplying a number by 1.1 represent?

Back

Multiplying a number by 1.1 represents a 10% increase of that number.

Front

How do you find the final price after a 15% discount on a price B?

Back

To find the final price after a 15% discount, multiply B by 0.85 (final price = 0.85B).

Front

What does the expression 0.70x represent?

Back

The expression 0.70x represents a 30% decrease from the original value of x.

Front

How can you express a 20% tip on a total amount p?

Back

To express a 20% tip on a total amount p, you can calculate the total amount as 1.2p.

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) * number.

Front

If a tutor's hourly wage is d dollars, what is the new wage after a 10% increase?

Back

The new wage after a 10% increase is 1.1d.

Front

What does a 5% increase mean in terms of a number x?

Back

A 5% increase means the new value is 1.05x.

Front

How do you calculate a 30% decrease on a number?

Back

To calculate a 30% decrease, multiply the number by 0.70.