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CAHSEE Math: Algebra I Drill 6, Problem 3. If x ounces of a 10% salt solution are added with 20 ounces of a 50% salt solution to create a comb...

Number Sense: Drill Set 2, Problem 5. By what percent did his percentage grade increase from one test to the other?

Number Sense: Drill Set 3, Problem 1. This is a decrease of, approximately, what percent?

ACT Math: Pre-Algebra Drill 5, Problem 1. Factoring in depreciation, how much is the car worth?

ACT Math: Pre-Algebra Drill 5, Problem 4. What was the percent discount of the sweater?

SAT Math 3.3 Numbers and Operations

This video covers how to use cross products to solve for a missing number in a proportion by setting that proportion with a variable over the produ...

ACT Math: Pre-Algebra Drill 1.2. What proportion of Jenna's day is spent Wii-swimming?

ACT Math: Pre-Algebra Drill 5, Problem 5. How many red cards must be added so that the proportion of red cards is one half?

ACT Math: Pre-Algebra Drill 4, Problem 4. Using the information given, find out how many girls attend the school.

SAT Math 10.3 Geometry and Measurement. What is the ratio of birds to dogs?

SAT Math 8.4 Geometry and Measurement

Approximately 874 people per day wonder what a unit rate is. If you're one of them, check out our video on unit rates and how to use them. (We just...

Algebra and Functions: Drill Set 6, Problem 4. How many miles can Karen run in 12.5 minutes?

SAT Math 2.4 Algebra and Functions