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Looking to con someone out of 40% of a pizza? You've come to the right place. Just don't try that on us.

Converting percents to decimals is easy: just move the decimal point two to the left. Yep, that's it. To the left, to the left... convertin' th...

If the value of a painting increases by 15 percent every year, what was it worth 5 years ago? Hold up: why would you want to sell it now? In a few...

How sure are you that this video is going to be about percents? 100%? Good.

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

SAT Math 2.2 Statistics and Probability. What percent of her recommended daily intake of 2000 calories did she consume?

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

SAT Math 2.5 Statistics and Probability

SAT Math 2.4 Statistics and Probability

SAT Math 3.3 Numbers and Operations

SAT Math 4.4 Geometry and Measurement

SAT Math 7.5 Geometry and Measurement 

Mathematical Reasoning Drill 3 Problem 2. Which of the following is the best estimate of the final cost of the dress before sales tax?

SAT Math 9.1 Algebra and Functions

Number Sense: Drill Set 2, Problem 3. What percentage of the total student population are enrolled in these physical education classes?

Number Sense: Drill Set 2, Problem 4. 7 is 3.5% of what number?

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

GED Math 2.5 Rational Numbers. How much time does it take Lucius to get to work?

GED Math 4.5 Rational Numbers. How much did Dez deposit into her savings account?

GED Math 5.4 Rational Numbers. How many gallons of custom color can Marcus create without buying any more paint?