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What is a googol? The number 1 followed by 100 zeros fun-math-fun-facts
What is pi? About 3.14159, the ratio of a circle's circumference to its diameter fun-math-fun-facts
When is Pi Day? March 14 (3/14) fun-math-fun-facts
What is the only even prime number? 2 fun-math-fun-facts
What is a prime number? A number greater than 1 with only two factors: 1 and itself fun-math-fun-facts
What are the first five prime numbers? 2, 3, 5, 7, 11 fun-math-fun-facts
What is a perfect number? A number equal to the sum of its smaller factors, like 6 (1+2+3) fun-math-fun-facts
What is the next perfect number after 6? 28 fun-math-fun-facts
What is a square number? The result of a number times itself, like 25 fun-math-fun-facts
What are the first five square numbers? 1, 4, 9, 16, 25 fun-math-fun-facts
What is a cube number? A number times itself twice, like 27 fun-math-fun-facts
What is the Fibonacci sequence? 1, 1, 2, 3, 5, 8, 13... each number is the sum of the previous two fun-math-fun-facts
Where do Fibonacci numbers show up in nature? In spirals of sunflowers, pinecones and shells fun-math-fun-facts
What is the golden ratio? About 1.618, a special ratio found in art and nature fun-math-fun-facts
Who is the father of geometry? Euclid fun-math-fun-facts
What is the Pythagorean theorem? In a right triangle, a squared plus b squared equals c squared fun-math-fun-facts
How many degrees in a circle? 360 fun-math-fun-facts
How many degrees in a triangle's angles? 180 fun-math-fun-facts
How many degrees in a right angle? 90 fun-math-fun-facts
How many sides does a hexagon have? Six fun-math-fun-facts
How many sides does an octagon have? Eight fun-math-fun-facts
What shape is a honeycomb cell? A hexagon fun-math-fun-facts
What is a polygon? A closed shape with straight sides fun-math-fun-facts
What is a number with no end after the decimal and no pattern? An irrational number, like pi fun-math-fun-facts
What is zero? The number that means none, invented in India fun-math-fun-facts
Who invented our digits 0 to 9? They came from India and spread through the Arab world (Hindu-Arabic numerals) fun-math-fun-facts
What number system do computers use? Binary, using 0 and 1 fun-math-fun-facts
What is 1,000,000 called? A million fun-math-fun-facts
What is 1,000,000,000 called? A billion fun-math-fun-facts
What is 1,000,000,000,000 called? A trillion fun-math-fun-facts
What is a dozen? Twelve fun-math-fun-facts
What is a gross? 144, or twelve dozen fun-math-fun-facts
What is a score? Twenty fun-math-fun-facts
How many seconds in a minute? 60 fun-math-fun-facts
How many minutes in an hour? 60 fun-math-fun-facts
How many hours in a day? 24 fun-math-fun-facts
How many days in a year? 365 (366 in a leap year) fun-math-fun-facts
How many weeks in a year? 52 fun-math-fun-facts
What are Roman numerals for 1, 5, 10, 50, 100? I, V, X, L, C fun-math-fun-facts
What is the Roman numeral for 500? D fun-math-fun-facts
What is the Roman numeral for 1,000? M fun-math-fun-facts
What is 12 x 12? 144 fun-math-fun-facts
What is 9 x 9? 81 fun-math-fun-facts
What is 7 x 8? 56 fun-math-fun-facts
What happens when you add the digits of a multiple of 9? The digits add up to a multiple of 9 fun-math-fun-facts
What is the 9s trick on fingers? Fold down the finger for the number; fingers left of it are tens and right are ones fun-math-fun-facts
What is a tessellation? A pattern of shapes that fit together with no gaps fun-math-fun-facts
What shape tiles a floor without gaps? Squares, triangles and hexagons fun-math-fun-facts
What is symmetry? When one half of a shape mirrors the other fun-math-fun-facts
How many lines of symmetry does a square have? Four fun-math-fun-facts
How many lines of symmetry does a circle have? Endless fun-math-fun-facts
What is an average? The sum of numbers divided by how many there are fun-math-fun-facts
What is a mean, median and mode? Average, middle value, and most common value fun-math-fun-facts
What does 'infinity' mean? Without end fun-math-fun-facts
What is the symbol for infinity? A sideways eight fun-math-fun-facts
What is the Möbius strip? A one-sided loop made by twisting a paper strip and joining its ends fun-math-fun-facts
Who was Ada Lovelace? An early thinker about computer programs in the 1840s fun-math-fun-facts
Who was Carl Friedrich Gauss? A German mathematician; as a boy he quickly added 1 to 100 fun-math-fun-facts
What is the sum of 1 to 100? 5,050 fun-math-fun-facts
What is 1 + 2 + 3 + 4 + 5? 15 fun-math-fun-facts
Why is a circle special? Every point on it is the same distance from the center fun-math-fun-facts
How many cents in a dollar? 100 fun-math-fun-facts
What is a percent? Out of 100 fun-math-fun-facts
What is 50 percent of 80? 40 fun-math-fun-facts
What number is half of 100? 50 fun-math-fun-facts
What is the biggest 3-digit number? 999 fun-math-fun-facts