ratios and proportions

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

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 cost per pound of a product?

Back

The cost per pound is calculated by dividing the total cost of the product by its weight in pounds.

Front

If 5 cups of flour are needed for 3 pies, how many cups are needed for 1 pie?

Back

You need 5/3 cups of flour for 1 pie.

Front

If a recipe requires 2 cups of sugar for 4 servings, how much sugar is needed for 10 servings?

Back

You need 5 cups of sugar for 10 servings.

Front

What is the formula to find the unit rate?

Back

The unit rate is found by dividing the quantity by the number of units, expressed as 'quantity per unit'.

Front

How do you find equivalent ratios?

Back

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

Front

What is the relationship between ratios and fractions?

Back

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

Front

If 3 apples cost $1.50, what is the cost of 1 apple?

Back

The cost of 1 apple is $0.50.