Percent & rational number word problems
7 videos
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5
Pre-algebra - The Percent Equation: Part, Percent, and Whole
Learn the one equation that solves every percent problem: Part = Percent × Whole. See how to identify each component and apply it to real examples.
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Pre-algebra - Percent Increase and Decrease Word Problems
Learn two methods to calculate percent decrease, including a faster one-step approach. Master percent increase and decrease problems with practical examples.
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Pre-algebra - How to Calculate Tax and Tip
Learn how to calculate sales tax and tips using a simple formula: multiply the price by the rate (as a decimal), then add to the original price to get the total.
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1
Pre-algebra - Finding the Original Price from a Discount
Learn how to calculate the original price of an item from its sale price and discount percentage. This video explains the math behind working backwards from discounts.
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Pre-algebra - Markup and Commission: Percents in Business
Learn how markup and commission work using real-world examples. Understand the formulas for calculating retail prices and sales commissions with percentages.
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Pre-algebra - Percents with Fractions: Ice Expansion Problem
Learn how to calculate volume expansion when water freezes using fractions and percentages. Step-by-step guide to solving real-world math problems with rational numbers.
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7
Pre-algebra - Multi-Step Word Problems with Rational Numbers
Learn to solve multi-step word problems involving decimals and fractions. Calculate Maya's earnings after working 3¾ hours at $9.50/hour and subtracting supply costs.