Unit 4 Test - Study Guide - 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 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 x 0.20 = 10.

Front

What does a 30% discount mean?

Back

A 30% discount means that the price is reduced by 30 out of every 100 units of currency. For example, if an item costs $100, a 30% discount would reduce the price to $70.

Front

How do you find the amount saved with a discount?

Back

To find the amount saved with a discount, multiply the original price by the discount percentage (in decimal form). For example, for a $620 item with a 30% discount: $620 x 0.30 = $186 saved.

Front

What is the formula to find the new price after a percentage increase?

Back

The new price can be found using the formula: New Price = Original Price + (Original Price x Percentage Increase).

Front

Convert 3/4 to a percentage.

Back

3/4 as a percentage is 75%.

Front

What is 50% of 730?

Back

50% of 730 is 365.

Front

How do you calculate a tip based on a percentage?

Back

To calculate a tip, multiply the total bill by the tip percentage (in decimal form). For example, for a $12 bill with a 25% tip: $12 x 0.25 = $3.

Front

If a price was $450 and it increased by 30%, what is the new price?

Back

The new price is $585.

Front

What is the relationship between fractions and percentages?

Back

Fractions can be converted to percentages by multiplying by 100. For example, 1/2 = 0.5 x 100 = 50%.