1/3/25 practice 2-1 Ratios, Rates, and Unit Rates

Front

What is a unit price?

Back

The unit price is the cost for one item or one unit of a product, calculated by dividing the total price by the number of units.

Front

How do you calculate the unit price of a product?

Back

To calculate the unit price, divide the total cost by the number of items. For example, if 8 bottles cost $4.00, the unit price is $4.00 ÷ 8 = $0.50.

Front

What is a ratio?

Back

A ratio is a comparison of two quantities that shows the relative size of one quantity to another.

Front

How can a ratio be expressed?

Back

A ratio can be expressed in three ways: as a fraction (1/2), with a colon (1:2), or with the word 'to' (1 to 2).

Front

What is a unit rate?

Back

A unit rate is a rate that compares a quantity to one unit of another quantity, such as miles per gallon.

Front

How do you find the unit rate?

Back

To find the unit rate, divide the total quantity by the number of units. For example, if 92 miles are driven using 4 gallons of gas, the unit rate is 92 ÷ 4 = 23 miles per gallon.

Front

What is a proportion?

Back

A proportion is an equation that states that two ratios are equal.

Front

How can you determine if two ratios form a proportion?

Back

Two ratios form a proportion if their cross products are equal. For example, if a/b = c/d, then a*d = b*c.

Front

What is the relationship between ratios and rates?

Back

Ratios compare two quantities, while rates compare two quantities with different units, such as speed (miles per hour).

Front

What is the difference between a ratio and a unit rate?

Back

A ratio compares two quantities, while a unit rate expresses a quantity in relation to one unit of another quantity.