Mathematics Trivia With Answer Key

Math Trivia Popular Topics
Games	Mnemonics	Math Tricks
Math Riddles	Math Quotes	Math Jokes
Math Puzzles	Math Doodles	Interesting Math Questions

Browse our extensive collection of math trivia and math fun stuff - math games, math tricks, math jokes, riddles, funny quotes, brain teasers, puzzles, mnemonics, humor and many more, to chase the math blues away!

You'll find that mathematics need not be dry and boring. Enjoy the lighter side of math with these collections of Math Games, Math Mnemonics, Mental Math, Math Tricks, Math Riddles, Math Quotes, Math Jokes, Brain Teasers, Math Puzzles, Logic Puzzles, Math Doodles, Saying and Quotes.

Math Games & Math Mnemonics

Math Games: A collection of fun and cool math games sorted by categories: Algebra, Arithmetic, Decimals, Factors, Fractions, Geometry, Integers Probability, Statistics etc. You can find games for all grade levels here.
Math Mnemonics: Some Math Mnemonics to help you remember math facts and formulas. We have put them in the following categories: Pre-Algebra, Algebra, Geometry and Trigonometry.

Mental Math and Math Tricks

Impress your friends, or spice up your math classes using these mental math and math tricks. Or simply improve your skills and confidence in handling numbers and have fun at the same time.

Mental Math & Math Tricks

Math Riddles

Math riddles like "What happens once in a minute, twice in a week, and once in a year?" and many more help you to think "out of the box", improve your observation and deductive skills. These math riddles are arranged in the following categories because often you need to know some of the subject matter before you can appreciate the riddle.

Math Riddles

Math Quotes

A collection of funny math quotes and one-liners, including quips like "One person's constant is another person's variable," and many more. These are indispensable for any math teacher to have handy.

Math Quotes

Math Jokes

These are the longer math jokes which are useful resources to liven up any math class.

Math Bloopers & Jokes

Brain Teasers

Brain Teasers and Puzzles for a good, solid brain workout with fun!

Matchstick & Matching Puzzles
Brain Teasers
Brain Teasers I
Liar Truth teller Brain Teaser, Toggler Brain Teaser, Alien Abduction Brain Teaser, Brain Teaser: Blue Forehead Room
Brain Teasers II
Forehead Numbers Brain Teaser, Light Bulb Switching Brain Teaser, Path Counting Brain Teaser, 3-D Path Counting Brain Teaser

Math Puzzles And Logic Puzzles

Come try out these math puzzles and logic puzzles and sharpen your deductive thinking.

Math & Logic Puzzles

Math Puzzles from Lewis Carroll

A Tribute to Lewis Carroll, a.k.a. the mathematician, C. L. Dodgson (Lewis Carroll is the pseudonym of the English writer and mathematician Charles Lutwidge Dodgson, known especially for the children's books "Alice's Adventures in Wonderland" and "Through the Looking Glass").

Occasionally, the witty writer and the mathematician would be reconciled, and this part of the site is dedicated to those moments. You may peruse witty Math-related Quotations from his work, or try untangling his math puzzles here.

Tangled Tales

Math Doodles

How about some math doodles and math music?

Math Doodles
Math, Music and Doodles
The Gauss Christmath Special, Möbius Music Box, Möbius Story: Wind and Mr. Ug, Pachelbel's Music Box Canon in D.
Math Doodles
Doodling in Math Class: Binary Trees, Doodling in Math Class: Stars, Doodling in Math Class: Snakes + Graphs, Doodling in Math Class: Infinity Elephants.

Math-Themed Sayings And Quotes

Funny sayings and quotes for you to ponder and enjoy.

Sayings & Quotes

Interesting Math Questions

Here some interesting math questions and their answers.

Why is negative times positive negative?
Why is negative times negative positive?

Why are we not allowed to divide by zero?
Why is dividing by a fraction the same as multiplying by the reciprocal?
Why zero factorial equals one?

Why is a number raised to the zeroth power one?
What does raising a number to a negative power actually mean?
What is a number raised to the half mean?
What is zero raised to the zeroth power?
What is i to the i-th power?
Does 0.999… equal one or does it not?

Divisibility Rule for 3, 9, 7 and 11 - Why they work?

Logarithms: Brief history and Explanation

Monty Hall Problem Explained

Mobius Strip Explained

Why are all Quadratic Graphs U shaped?
Graphing Quadratics made Ridiculously Easy
Graphing Factored Polynomials

Basic Transformations of Graphs: Translations
The Graph of an Inverse Function is a Reflection
Graphing Complex Numbers

Pascal's Triangle and Binomial Theorem

What is a vector?
The Medians of a Triangle are Concurrent: Use Vectors to Proof

What is the number e?
The number e and Compound Interest
e^ix: Deriving Euler's Formula

Euclidean Algorithm
Are Factor Trees Unique?
Euclidean Algorithm and Jug Filling
Fundamental Theorem of Arithmetic: Proof

On Pythagoras' Theorem
Generating Pythagorean Triples
Pythagoras in 3-D: Two Ways

Wrapping a Rope around the Earth Puzzle
Dots on a Circle Puzzle
Bertrand's Paradox
A Harmonic Series Paradox

25 People in a Square Grid Puzzle
When does Perimeter equal Area?
What is Fractional Dimension and What is a Fractal?
Pi for a Square

Multi-Choosing Puzzle
Pile Splitting Puzzle
Derangements and Hats
Dots and Dashes

Sum of Cubes
Geometric Series Formula
The Basel Problem / The value of zeta two / Wallis' Product
Benford's Law

Standard Deviation Formula Explained
Fibonacci Formula
Completing the Square
Deriving the Quadratic Formula

Viviani's Theorem
Proof of Heron's Formula for the Area of a Triangle
On 30-60-90 and 45-90-45 Triangles
Finding the Center of a Circle
Radian Measure

Mersenne Primes
Perfect Numbers
Finger Multiplication Trick
Square Roots - and Addition
The Truth About "Rationalizing the Denominator"

Why is tangent called "tangent" in trigonometry?
The Complex Number i is NOT the square root of negative one
Fitting Exponential Functions to Data
Pigeon Hole Principle

Sums of Consecutive Numbers Puzzle
Fractions take up No Space: Rationals Have Measure Zero
Fitting Exponential Functions to Data
Fibonacci Puzzle

Angles in a 5-pointed Star
Magic Magic Squares!
Equidistance and Circles in Triangles
Law of Sines: A Little Curiosity About It

Curry's Paradox and the Notion of Area

Partition Numbers

Partitions and Fibonacci Numbers

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