Proportions Review - Absent students

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 two ratios and then solve for the unknown variable.

Front

What does it mean if two ratios form a proportion?

Back

It means that the two ratios are equivalent, meaning they represent the same relationship.

Front

If 12 ounces of shampoo lasts 16 weeks, how long will 18 ounces last?

Back

24 weeks.

Front

If hamburger meat costs $6 for 3 pounds, how much does 10 pounds cost?

Back

$20.

Front

What is the formula for finding a missing value in a proportion?

Back

If a/b = c/d, then ad = bc.

Front

What is the relationship between ratios and proportions?

Back

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

Front

How can you check if two ratios form a proportion?

Back

Cross-multiply the ratios and see if the products are equal.

Front

What is the first step in solving a proportion problem?

Back

Identify the two ratios that are being compared.

Front

If a recipe calls for 1.5 cups of milk for 3 cups of flour, how much milk is needed for 5 cups of flour?

Back

2.5 cups of milk.