Rates, Ratios and Unit Rates

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 write a ratio?

Back

Ratios can be written in three ways: using a colon (X:Y), as a fraction (X/Y), or with the word 'to' (X to Y).

Front

Which of the following is NOT a correct way to write a ratio?

Back

X and Y is NOT a correct way to write a ratio.

Front

What is a unit rate?

Back

A unit rate is a ratio that compares a quantity to one unit of another quantity, often expressed as 'per 1'.

Front

Calculate the unit rate: A car travels 440 miles in 8 hours.

Back

55 miles in 1 hour.

Front

Calculate the unit rate: Mr. Keys made $90 in 5 hours.

Back

$18 per hour.

Front

What is the simplest form of the ratio 18 ounces to 3 cups?

Back

6 to 1.

Front

What are the three different kinds of ratios?

Back

Part to Part, Part to Whole, Whole to Part.

Front

True or False: A ratio can only compare two quantities.

Back

False. A ratio can compare more than two quantities.

Front

If a recipe calls for 2 cups of flour and 3 cups of sugar, what is the ratio of flour to sugar?

Back

The ratio of flour to sugar is 2:3.