Unit 3: Unit Rates and Percentages

Front

What is a unit rate?

Back

A unit rate is a comparison of two different quantities when they are combined together. It is expressed as a quantity per one unit of another quantity.

Front

How do you calculate a percentage discount?

Back

To calculate a percentage discount, divide the amount saved by the original price and then multiply by 100. Formula: (Amount Saved / Original Price) x 100.

Front

What is the formula to convert gallons to milliliters?

Back

1 gallon = 3,785 mL.

Front

What is the meaning of 'per' in mathematics?

Back

'Per' means 'for each' and is used to express rates.

Front

How do you find 80% of a number?

Back

To find 80% of a number, multiply the number by 0.80.

Front

What is speed in terms of distance and time?

Back

Speed is the distance traveled divided by the time taken. Formula: Speed = Distance / Time.

Front

If a game costs $65 and is on sale for $7.80 off, what is the sale price?

Back

Sale Price = Original Price - Discount = $65 - $7.80 = $57.20.

Front

What is the relationship between unit rates and ratios?

Back

Unit rates are a specific type of ratio that compares a quantity to one unit of another quantity.

Front

How do you convert milliliters to quarts?

Back

To convert milliliters to quarts, divide the number of milliliters by 946.25.

Front

What is the percentage formula?

Back

Percentage = (Part / Whole) x 100.