Ratios

Front

What is a ratio?

Back

A ratio is a comparison of two numbers, showing how many times one value contains or is contained within the other.

Front

What does it mean for two ratios to be equivalent?

Back

Two ratios are equivalent if they represent the same relationship between numbers, meaning they can be simplified to the same fraction.

Front

Simplify the ratio 10:15.

Back

2:3

Front

Which of the following ratios is equivalent to 4:6? 2:3, 3:4, 8:12

Back

2:3 and 8:12 are equivalent to 4:6.

Front

If a recipe calls for a ratio of 1:4 of sugar to flour, how much sugar is needed for 2 cups of flour?

Back

0.5 cups of sugar are needed.

Front

What is the ratio of red marbles to blue marbles if there are 3 red and 5 blue marbles?

Back

The ratio of red marbles to blue marbles is 3:5.

Front

How do you convert a ratio into a fraction?

Back

To convert a ratio into a fraction, write the first number as the numerator and the second number as the denominator.

Front

What is the ratio of blue circles to the total number of circles if there are 2 blue circles and 3 red circles?

Back

The ratio of blue circles to the total number of circles is 2:5.

Front

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

Back

There are 8 girls in the class.

Front

What is the relationship between ratios and proportions?

Back

A proportion states that two ratios are equal, while a ratio simply compares two quantities.