Ratios & Proportions Practice

Front

What is a ratio?

Back

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

Front

What is a proportion?

Back

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

Front

Back

Front

What is the formula to find the percentage of a number?

Back

The formula to find the percentage of a number is: (Part/Whole) x 100.

Front

If 40% of a class takes the bus, how do you find the number of students who do not take the bus?

Back

To find the number of students who do not take the bus, first calculate 40% of the total number of students, then subtract that number from the total.

Front

What is the relationship between ratios and fractions?

Back

Ratios can be expressed as fractions, where the first quantity is the numerator and the second quantity is the denominator.

Front

How do you simplify a ratio?

Back

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

Front

What is the unit rate?

Back

The unit rate is a ratio that compares a quantity to one unit of another quantity, often expressed as 'per' something.

Front

How do you convert a fraction to a percentage?

Back

To convert a fraction to a percentage, divide the numerator by the denominator and then multiply by 100.

Front

If a recipe calls for a ratio of 1:5 for sugar to flour, how much sugar is needed for 25 cups of flour?

Back

For 25 cups of flour, you need 5 cups of sugar, since 1 part sugar to 5 parts flour means 25/5 = 5.