Ratios & Proportions 2022-2023

Front

What is a ratio?

Back

A ratio is a comparison of two quantities that shows the relative size of one quantity to another, often expressed as 'a:b'.

Front

How do you simplify a ratio?

Back

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

Front

What is a proportion?

Back

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

Front

How do you solve a proportion?

Back

To solve a proportion, cross-multiply and then divide to find the unknown value.

Front

If 16 hot dogs are sold each minute, how many are sold in 30 minutes?

Back

480 hot dogs.

Front

If 1 tray of tater tots is needed for every 20 kids, how many trays are needed for 180 kids?

Back

9 trays.

Front

In a ratio of 3:5, if there are 30 tenants, how many cars are there?

Back

50 cars.

Front

True or False: The order of numbers in a ratio does not matter as long as it is in lowest terms.

Back

False.

Front

What is the ratio of red to yellow marbles if there are 2 red and 5 yellow?

Back

2:5.

Front

What does it mean for a ratio to be in lowest terms?

Back

A ratio is in lowest terms when the two numbers have no common factors other than 1.