Math Puzzles

Math puzzles sorted by the idea they turn on: number properties, algebra, geometry, ratios, and logic. Every puzzle comes with a worked solution.

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Geometry Puzzle – Challenge 77

Geometry Puzzle – Challenge 77

Geometry Puzzle – Challenge 77 is a multiple-choice math challenge from Effortless Math. Read the problem, choose from the answer options below, then open the solution to see the full step-by-step working and check your reasoning against it. The Best Books to Ace Algebra

Geometry Puzzle – Challenge 76

Geometry Puzzle – Challenge 76

An equilateral triangle has perimeter 2x and area x (numerically). Each side is (2x)/3. Use the equilateral area formula A = s^2 sqrt(3)/4, set equal to x, and solve for x. Substitute back to get side length = 2 sqrt(3) meters. Key takeaways: Perimeter of equilateral triangle = 3 times side, so side s = […]

Geometry Puzzle – Challenge 75

Geometry Puzzle – Challenge 75

Geometry Puzzle – Challenge 74

Geometry Puzzle – Challenge 74

Geometry Puzzle – Challenge 73

Geometry Puzzle – Challenge 73

Geometry Puzzle – Challenge 71

Geometry Puzzle – Challenge 71

Geometry Puzzle – Challenge 72

Geometry Puzzle – Challenge 72

Geometry Puzzle – Challenge 70

Geometry Puzzle – Challenge 70

Geometry Puzzle – Challenge 69

Geometry Puzzle – Challenge 69

Geometry Puzzle – Challenge 68

Geometry Puzzle – Challenge 68

Geometry Puzzle – Challenge 67

Geometry Puzzle – Challenge 67

Geometry Puzzle – Challenge 66

Geometry Puzzle – Challenge 66