Ratios

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 mathematical expression that represents the difference between two numbers.

• A ratio is a method of calculating the average of a set of numbers.

• A ratio is a graphical representation of data points in a chart.

What is an equivalent ratio?

• Equivalent ratios are ratios that express the same relationship between two quantities, even if the numbers are different (e.g., 1:2 is equivalent to 2:4).

• Equivalent ratios are ratios that can only be expressed with whole numbers.

• Equivalent ratios are ratios that are always equal to one another.

• Equivalent ratios are ratios that can only be expressed in fractions.

How can you simplify a ratio?

• By multiplying both terms by their least common multiple (LCM).

• By dividing both terms by their greatest common divisor (GCD).

• By adding both terms together.

• By subtracting the smaller term from the larger term.

What is the first step to solving a ratio problem?

• Identify the quantities being compared and express them in ratio form.

• Calculate the total of the quantities involved.

• Convert the quantities to percentages.

• Determine the difference between the quantities.

What does it mean if two ratios are proportional?

• They are equal in value when simplified.

• They have different values when simplified.

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

• They are always whole numbers.

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

How can you use ratios in real-life situations?

• Ratios can be used in cooking, budgeting, and comparing quantities.

• Ratios are only useful in mathematical problems.

• Ratios can be used to measure time only.

• Ratios are not applicable in daily life.

How do you find an equivalent ratio?

• By adding the same number to both terms of the ratio.

• By multiplying or dividing both terms of the ratio by the same non-zero number.

• By subtracting the smaller term from the larger term.

• By finding the greatest common divisor of both terms.

If you earn $5 for every 6 hours of work, what is the ratio of money earned to hours worked?

• 5:6

• 1:2

• 2:3

• 10:12

How do you write a ratio?

• Using a semicolon (e.g., 3;2)

• As a decimal (e.g., 1.5)

• Using a colon (e.g., 3:2)

• In words only (e.g., three to two)