Ratios

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

• 12

• 14

• 16

• 18

What is a ratio?

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

• A ratio is a method of measuring the size of an object in relation to another object.

• A ratio is a statistical measure that indicates the relationship between two variables.

• A ratio is a type of graph that displays the relationship between different data points.

If a recipe calls for a ratio of 2:3 of sugar to flour, how much sugar is needed for 6 cups of flour?

• 2 cups of sugar

• 3 cups of sugar

• 4 cups of sugar

• 5 cups of sugar

What does it mean for two ratios to be equal?

• They are always the same number.

• They represent the same relationship between quantities, meaning they can be expressed as equivalent fractions.

• They can be added together to form a new ratio.

• They must have the same denominator.

How can you convert a ratio to a fraction?

• Write the first term as the numerator and the second term as the denominator.

• Multiply both terms of the ratio by the same number.

• Add both terms of the ratio together.

• Subtract the second term from the first term.

How do you find missing values in a ratio table?

• By using equivalent ratios and cross-multiplying if necessary.

• By adding the known values together.

• By averaging the known values.

• By subtracting the known values from the total.

How do you convert a ratio to a decimal?

• Multiply the first term by the second term.

• Add the first term to the second term.

• Divide the first term by the second term.

• Subtract the second term from the first term.

What does it mean to complete a ratio table?

• Filling in missing values to show equivalent ratios.

• Creating a new table with random numbers.

• Calculating the average of the ratios.

• Sorting the ratios in ascending order.

What is the ratio of 15 to 10?

• 2 to 1

• 3 to 2

• 5 to 3

• 4 to 3

What is the ratio of 10 to 15 in simplest form?

• 1 to 2

• 2 to 3

• 3 to 5

• 5 to 7