Math 7 Proportions (Flashcard)

Front

What is a proportion?

Back

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

Front

How do you find a missing value in a ratio table?

Back

To find a missing value in a ratio table, set up a proportion using the known values and solve for the unknown.

Front

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

Back

4 cups of sugar.

Front

What is the formula to calculate unit price?

Back

Unit Price = Total Price / Quantity.

Front

If 5 pounds of apples cost $10, what is the cost of 1 pound?

Back

$2 per pound.

Front

What is the relationship between ratios and proportions?

Back

Ratios compare two quantities, while proportions show that two ratios are equivalent.

Front

How do you solve for x in a proportion?

Back

Cross-multiply the terms and then isolate x.

Front

What does it mean if two ratios are equivalent?

Back

It means they represent the same relationship between quantities.

Front

If a car travels 150 miles on 5 gallons of gas, what is the car's miles per gallon?

Back

30 miles per gallon.

Front

What is a ratio?

Back

A ratio is a comparison of two quantities, often expressed as a fraction.