Ratio

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 to b' or a:b.

Front

How do you write the ratio of 5 apples to 3 oranges?

Back

5 to 3 or 5:3

Front

If the ratio of boys to girls is 2:3, how many boys are there if there are 12 girls?

Back

8 boys (since 2/3 = x/12, x = 8).

Front

What does a ratio table display?

Back

A ratio table displays pairs of numbers that form equivalent ratios.

Front

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

Back

2 to 3 or 2:3

Front

In a class of 30 students, if the ratio of boys to girls is 1:2, how many boys are there?

Back

10 boys (since 1 part boys and 2 parts girls means 1/3 of 30 is boys).

Front

What is the ratio of 10 to 5 simplified?

Back

2 to 1 or 2:1

Front

If there are 15 red marbles and 5 blue marbles, what is the ratio of blue to red marbles?

Back

1 to 3 or 1:3

Front

What is an equivalent ratio to 4:6?

Back

2:3 (both can be simplified by dividing by 2).

Front

If the ratio of cats to dogs is 3:4, how many dogs are there if there are 9 cats?

Back

12 dogs (since 3/4 = 9/x, x = 12).