Roots, exponents, & scientific notation
12 videos
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Pre-algebra - Roots, Exponents & Scientific Notation: Why They Matter
Learn how exponents, roots, and scientific notation simplify working with extremely large or small numbers. These essential math tools make complex calculations manageable.
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Pre-algebra - What Are Square Roots?
Learn what square roots are, how they undo squaring, and identify perfect squares. Understand the principal square root and its radical symbol notation.
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Pre-algebra - What Are Cube Roots?
Learn what cube roots are, how they undo cubing, and why they work with negative numbers. Includes examples like finding the side length of a cube with volume 64.
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Pre-algebra - Solving Equations with Roots
Learn how to solve equations with squared and cubed variables using square roots and cube roots, including why square roots have two solutions while cube roots have one.
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Pre-algebra - Multiplying and Dividing Powers
Learn exponent rules: multiply powers with same base by adding exponents, divide by subtracting. Includes examples and explanations of product and quotient rules.
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Pre-algebra - Negative Exponents Explained
This video explains that negative exponents create fractions, not negative numbers, by showing the pattern of dividing as exponents decrease and demonstrating the reciprocal rule.
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Pre-algebra - Exponent Properties with Integer Exponents
Learn to simplify complex expressions using product, quotient, power rules and negative exponents. Step-by-step example combines all four rules in one problem.
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Pre-algebra - What Is Scientific Notation?
Learn how scientific notation simplifies writing very large and very small numbers using powers of ten. Understand the format a × 10^n and when exponents are positive or negative.
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Pre-algebra - Converting To and From Scientific Notation
Learn how to convert numbers to and from scientific notation using powers of 10. Covers positive and negative exponents with clear examples like 47 million and 0.0000306.
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Pre-algebra - Multiplying and Dividing in Scientific Notation
Learn how to multiply and divide numbers in scientific notation by handling coefficients and powers of 10 separately, with clear examples and step-by-step instructions.
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Pre-algebra - Adding and Subtracting in Scientific Notation
Learn how to add and subtract numbers in scientific notation by matching exponents, combining coefficients, and converting to proper form with a step-by-step example.
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Pre-algebra - Scientific Notation Word Problems
Learn how to use scientific notation to solve a real-world problem: calculating how long it takes to text 8 billion people using division with powers of 10.