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Math calculators cover percentages, fractions, statistics, algebra, and geometry. Our guides break down the formulas step by step so you understand the math behind every calculation.
Guides
How to Calculate Percentages - Complete Guide
Learn how to calculate percentages step by step. Covers finding a percentage of a number, percentage change, reverse percentages, and real-world applications.
Read guideUnderstanding Standard Deviation - Complete Guide
Learn what standard deviation is, how to calculate it step by step, and why it matters. Covers population vs. sample standard deviation with clear examples.
Read guideHow to Solve Quadratic Equations - Complete Guide
Learn how to solve quadratic equations using factoring, the quadratic formula, and completing the square. Step-by-step methods with worked examples.
Read guideIntroduction to Derivatives - Complete Guide
Learn the fundamentals of derivatives in calculus. Covers the definition, power rule, product rule, chain rule, and practical applications with clear examples.
Read guideHow to Calculate Area of Shapes - Complete Guide
Learn how to calculate the area of common shapes including rectangles, triangles, circles, trapezoids, parallelograms, and ellipses with formulas and examples.
Read guideUnderstanding Fractions and Decimals - Complete Guide
Learn how fractions and decimals work, how to convert between them, and how to perform arithmetic operations. Includes simplification, comparison, and practical tips.
Read guidePythagorean Theorem - Complete Guide
Master the Pythagorean theorem with this comprehensive guide. Learn the formula a² + b² = c², proofs, Pythagorean triples, and real-world applications.
Read guideHow to Calculate Mean, Median, and Mode - Complete Guide
Learn how to calculate mean, median, and mode with clear explanations and examples. Understand when to use each measure of central tendency.
Read guideUnderstanding Logarithms - Complete Guide
Learn what logarithms are, how they work, and how to use them. Covers log rules, common and natural logarithms, change of base, and real-world applications.
Read guideHow to Calculate Probability - Complete Guide
Learn the fundamentals of probability including basic probability, compound events, conditional probability, Bayes' theorem, and expected value with worked examples.
Read guideIntroduction to Matrices - Complete Guide
Learn the fundamentals of matrices including notation, operations, determinants, inverses, and applications in systems of equations, transformations, and data science.
Read guideTrigonometry Basics - Complete Guide
Learn the fundamentals of trigonometry including sine, cosine, tangent, the unit circle, identities, and the laws of sines and cosines with practical examples.
Read guideHow to Simplify Radicals - Complete Guide
Learn how to simplify radical expressions step by step. Covers square roots, cube roots, rationalizing denominators, and operations with radicals.
Read guideUnderstanding Prime Numbers - Complete Guide
Learn what prime numbers are, how to identify them, prime factorization, the Sieve of Eratosthenes, and why primes matter in cryptography and mathematics.
Read guideHow to Calculate Permutations and Combinations - Complete Guide
Learn how to calculate permutations and combinations with clear formulas and examples. Understand when order matters, factorials, and real-world counting problems.
Read guideHow to Calculate Percentages
Learn how to calculate percentages step by step, including finding a percentage of a number, percentage increase or decrease, and converting between fractions and percentages. Master percentage calculations for everyday use in finance, school, and shopping.
Read guideHow to Solve Quadratic Equations
Learn three methods for solving quadratic equations: factoring, completing the square, and the quadratic formula. Understand when to use each approach and how to interpret the solutions.
Read guideHow to Calculate Area and Perimeter
Learn how to calculate the area and perimeter of common shapes including squares, rectangles, triangles, and circles. Step-by-step formulas with worked examples for each shape.
Read guideHow to Calculate Volume of 3D Shapes
Learn how to calculate the volume of common 3D shapes including cubes, rectangular prisms, cylinders, cones, and spheres. Step-by-step formulas with real examples.
Read guideHow to Calculate Mean, Median, and Mode
Learn how to calculate the mean, median, and mode of a data set with clear step-by-step examples. Understand which measure of central tendency to use and why.
Read guideHow to Calculate Standard Deviation
Learn how to calculate standard deviation step by step for both population and sample data sets. Understand what standard deviation measures and how to interpret results.
Read guideHow to Calculate Probability
Learn how to calculate probability using the classical formula, conditional probability, and the addition and multiplication rules. Understand probability with clear, worked examples.
Read guideHow to Work with Fractions
Learn how to add, subtract, multiply, and divide fractions with step-by-step examples. Master simplifying fractions, finding common denominators, and converting between mixed numbers and improper fractions.
Read guideHow to Calculate Ratios and Proportions
Learn how to set up and solve ratios and proportions with clear examples. Understand the difference between ratios and proportions and apply them in real-world situations like recipes, maps, and scaling.
Read guideHow to Calculate Square Roots
Learn how to calculate square roots manually and understand their properties. Covers perfect squares, simplifying radicals, the long division method, and real-world uses of square roots.
Read guideHow to Calculate Exponents and Powers
Learn how exponents and powers work, including the rules of exponents, negative and fractional exponents, and scientific notation. Step-by-step examples for every rule.
Read guideHow to Calculate Greatest Common Factor (GCF)
Learn how to find the Greatest Common Factor (GCF) of two or more numbers using listing factors, prime factorization, and the Euclidean algorithm. Includes step-by-step examples and real-world uses.
Read guideHow to Calculate Least Common Multiple (LCM)
Learn how to find the Least Common Multiple (LCM) of two or more numbers using listing multiples, prime factorization, and the GCF formula. Includes step-by-step examples for each method.
Read guideHow to Calculate Slope of a Line
Learn how to calculate the slope of a line using two points, understand positive and negative slopes, and work with slope-intercept and point-slope forms. Includes real-world examples.
Read guideHow to Use the Pythagorean Theorem
Learn how to apply the Pythagorean theorem to find the sides of a right triangle. Covers the formula, common Pythagorean triples, and real-world applications in construction, navigation, and geometry.
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