Ratio Review

Front

What is a unit rate?

Back

A unit rate is a comparison of two different quantities where one of the quantities is expressed as a single unit. It is often used to determine the cost per item or per unit of measurement.

Front

How do you calculate the unit price of an item?

Back

To calculate the unit price, divide the total cost of the item by the number of units. For example, if a 5-pound bag of apples costs $8.95, the unit price is $8.95 ÷ 5 = $1.79 per pound.

Front

What is the formula for finding the ratio of two quantities?

Back

The formula for finding the ratio of two quantities is: Ratio = Quantity A : Quantity B. This can be simplified by dividing both quantities by their greatest common divisor.

Front

How do you determine which option is the better buy?

Back

To determine the better buy, compare the unit prices of the options. The option with the lower unit price is the better buy.

Front

What is the ratio of dogs to all pets if there are 2 dogs, 4 cats, and 5 hamsters?

Back

The ratio of dogs to all pets is 2:11, calculated by adding the total number of pets (2 + 4 + 5 = 11) and comparing it to the number of dogs.

Front

How do you find the total cost for a different number of people based on a known cost?

Back

To find the total cost for a different number of people, first determine the cost per person by dividing the total cost by the number of people. Then multiply the cost per person by the new number of people.

Front

What is the significance of understanding ratios in real-life applications?

Back

Understanding ratios helps in making comparisons, determining proportions, and making informed decisions in various real-life situations, such as shopping, cooking, and budgeting.

Front

What is a proportion?

Back

A proportion is an equation that states that two ratios are equal. For example, if a/b = c/d, then a, b, c, and d are in proportion.

Front

How can you simplify a ratio?

Back

To simplify a ratio, divide both terms of the ratio by their greatest common factor (GCF). For example, the ratio 4:8 can be simplified to 1:2.

Front

What is the relationship between unit rates and proportions?

Back

Unit rates can be used to create proportions, as they allow for the comparison of different quantities on a per-unit basis, making it easier to solve for unknowns.