Ratios & Rates WS

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 in the form 'a to b' or a:b.

Front

How do you find the equivalent ratio?

Back

To find an equivalent ratio, multiply or divide both terms of the ratio by the same non-zero number.

Front

If the ratio of two quantities is 4:3 and one quantity is known, how can you find the other?

Back

Use cross-multiplication or set up a proportion to find the unknown quantity.

Front

What is a rate?

Back

A rate is a specific kind of ratio that compares two different units, such as miles per hour or cost per item.

Front

How do you calculate unit cost?

Back

To calculate unit cost, divide the total cost by the number of units.

Front

If there are 12 hamburgers and the ratio of hot dogs to hamburgers is 4:3, how many hot dogs are there?

Back

16 hot dogs.

Front

What is the formula to find the number of items created per hour?

Back

Number of items created per hour = Total items / Total hours.

Front

If Jackie and Luke created 250 slides in 8 hours, how many slides did they create per hour?

Back

31.25 slides per hour.

Front

What does it mean if a recipe has a ratio of 2 to 3 for chocolate chips to sprinkles?

Back

It means for every 2 tablespoons of chocolate chips, there are 3 tablespoons of sprinkles.

Front

If you have a ratio of 5 orange Starbursts to 2 red Starbursts, how would you express this ratio in simplest form?

Back

The simplest form is 5:2.