Ratio and Proportions Review

Front

What is a ratio?

Back

A ratio is a relationship between two numbers indicating how many times the first number contains the second.

Front

How do you simplify a ratio?

Back

To simplify a ratio, divide both terms by their greatest common divisor (GCD).

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

How can you find an equivalent ratio?

Back

To find an equivalent ratio, multiply or divide both terms of the ratio by the same non-zero number.

Front

What is a proportion?

Back

A proportion is an equation that states that two ratios are equal.

Front

How do you solve a proportion?

Back

To solve a proportion, cross-multiply the terms and then solve for the unknown variable.

Front

What is the formula for finding the total number of parts in a ratio?

Back

The total number of parts in a ratio is the sum of the parts of the ratio.

Front

If a class has 30 students and the ratio of boys to girls is 3:2, how many girls are there?

Back

There are 12 girls in the class.

Front

What is the method to find the number of items in a ratio when given one part?

Back

To find the number of items in a ratio when given one part, use the formula: (given part / ratio part) * total parts.

Front

How do you convert a fraction to a ratio?

Back

To convert a fraction to a ratio, express the numerator and denominator as a ratio of two numbers.