Ratios Topic 1 - 4

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 is the ratio of sugar to flour if the recipe calls for 2 cups of sugar and 3 cups of flour?

Back

The ratio of sugar to flour is 2:3.

Front

If there are 30 tenants and the ratio of tenants to cars is 3:5, how many cars are there?

Back

There are 50 cars.

Front

What is a unit rate?

Back

A unit rate is a rate in which the second quantity is 1. For example, $45 per hour is a unit rate.

Front

How do you find the speed of a train if it covers a distance of 240 kilometers in 4 hours?

Back

Speed = Distance ÷ Time. So, Speed = 240 km ÷ 4 h = 60 km/h.

Front

What is the simplest form of the ratio of red LEGOS to yellow LEGOS if there are 3 red and 6 yellow?

Back

The simplest form is 1:2.

Front

If a recipe requires a ratio of 2:3 for sugar to flour, how much sugar is needed for 6 cups of flour?

Back

You need 4 cups of sugar.

Front

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

Back

A rate compares two different units, while a unit rate compares a quantity to one unit of another quantity.

Front

If a car travels 150 miles in 3 hours, what is its speed in miles per hour?

Back

Speed = 150 miles ÷ 3 hours = 50 miles per hour.