3.12 Review Ratios & Proportional Reasoning

Front

What is a ratio?

Back

A ratio is a comparison of two quantities, showing how many times one value contains or is contained within the other.

Front

How do you simplify a ratio?

Back

To simplify a ratio, divide both terms by their greatest common divisor (GCD).

Front

What does it mean for two ratios to be proportional?

Back

Two ratios are proportional if they express the same relationship between quantities, meaning they can be set equal to each other.

Front

If the ratio of triangles to squares is 4:3, how many squares are there if there are 12 triangles?

Back

There are 9 squares.

Front

What is the unit rate?

Back

The unit rate is a ratio that compares a quantity to one unit of another quantity, often expressed as 'per' unit.

Front

How do you find the unit price of an item?

Back

To find the unit price, divide the total price by the number of units.

Front

If 3 pounds of hamburger meat cost $6, what is the cost per pound?

Back

The cost per pound is $2.

Front

What is the ratio of cupcakes to cookies if there are 10 cupcakes and 60 cookies?

Back

The ratio is 1:6.

Front

How do you determine if two ratios form a proportion?

Back

Cross-multiply the ratios; if the products are equal, the ratios form a proportion.

Front

What is the simplest form of the ratio 30:45?

Back

The simplest form is 2:3.