25 docs tagged with "Grade 8"

Learn the area of a circle formula (A = pi r squared) and circumference formula (C = 2 pi r) with clear worked examples and practice problems.

Learn how to calculate the area and perimeter of rectangles, triangles, circles, and more with clear formulas, worked examples, and practice problems.

Learn how to find the area of a triangle using the base-times-height formula. Includes worked examples, Heron's formula, and practice problems.

Learn the distance formula with clear derivation, 5 worked examples, and practice problems. Find the distance between any two points on a coordinate plane.

Master every exponent rule — product, quotient, power, zero, and negative — with clear formulas, step-by-step examples, and practice problems for grades 7-8.

Learn exponents and powers with clear rules, KaTeX formulas, worked examples, and practice problems for grade 7-8 students.

Learn the percentage increase and decrease formula with step-by-step examples. Covers markups, discounts, population change, and reverse percentage problems.

Learn how to calculate percentage of a number step by step. Master the percentage formula with worked examples and practice problems for grades 7-8.

Learn the area of a trapezoid formula with clear explanations, step-by-step examples, and practice problems. Master the parallel-bases method.

Learn how to solve equations with fractions by clearing denominators using the LCD. Step-by-step examples and practice for grades 7-8.

Learn how to solve linear equations step by step with clear theory, worked examples, common mistakes, and practice problems for grades 7-9.

Understand negative exponents, learn the reciprocal rule, and practice simplifying expressions with negative powers. Step-by-step examples for grades 8-9.

Practice percentage word problems with step-by-step solutions. Covers discounts, taxes, tips, test scores, and real-life scenarios for grades 7-8.

Learn how to calculate percentages, convert between fractions, decimals, and percents, and solve percentage word problems with step-by-step examples.

Learn how to calculate probability with the basic formula, worked examples using dice, coins, and cards, common mistakes, and practice problems for grades 7-8.

Learn the Pythagorean theorem with clear explanations, a visual proof, worked examples, and practice problems for grades 8-9.

Practice the Pythagorean theorem with 5 worked examples and answers. Find missing sides, verify right triangles, and solve real-world problems step by step.

Solve real-world Pythagorean theorem word problems step by step. Ladders, navigation, construction, and sports — with full worked solutions for grades 8-9.

Learn what Pythagorean triples are, see a list of common triples, and discover how to generate new ones using a simple formula. Worked examples and practice for grades 8-9.

Learn scientific notation step by step — how to convert numbers, multiply, divide, and add in scientific notation. Worked examples and practice for grades 8-9.

Master two-step equations with clear explanations, worked examples, and practice problems. Learn the undo strategy for grades 7-8 algebra.

Learn how to find square roots and cube roots, simplify radicals, and solve root problems step by step. Clear examples and practice for grades 7-8.

Learn statistics basics including mean, median, mode, range, and data analysis with clear formulas, worked examples, and practice problems for grades 6-8.

Learn how to calculate the surface area of prisms, cylinders, pyramids, cones, and spheres with clear formulas, worked examples, and practice.

Learn how to translate word problems into equations and solve them step by step. Real-world examples and practice for grades 7-8 algebra.