6th Grade ratios

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 an equivalent ratio?

Back

Equivalent ratios are ratios that express the same relationship between quantities, even if the numbers are different.

Front

If the ratio of dogs to cats is 3:2, how many dogs are there if there are 10 cats?

Back

There are 15 dogs. (Using the ratio 3:2, for every 2 cats, there are 3 dogs. 10 cats = 15 dogs.)

Front

What is the cost of 1 cinnamon raisin muffin if 4 muffins cost $6?

Back

The cost of 1 muffin is $1.50. ($6 ÷ 4 = $1.50)

Front

How do you find a missing value in a ratio?

Back

To find a missing value in a ratio, set up a proportion and solve for the unknown.

Front

What is the ratio of green rubber bands if 2 out of every 7 are green?

Back

The ratio of green rubber bands is 2:7.

Front

How many green rubber bands are in a package of 28 if 2 out of every 7 are green?

Back

There are 8 green rubber bands. (28 ÷ 7 = 4; 4 × 2 = 8)

Front

What is the total cost of 3 gallons if each gallon costs $8?

Back

The total cost is $24. (3 × $8 = $24)

Front

If the ratio of boys to girls in a class is 4:5, how many girls are there if there are 20 boys?

Back

There are 25 girls. (Using the ratio 4:5, for every 4 boys, there are 5 girls. 20 boys = 25 girls.)