Maths Trivia Questions for Anyone Who Loves a Good Challenge

Maths trivia has a sneaky way of making people very confident right before they get humbled by a question about zero, prime numbers, or a shape they haven’t thought about since school. That’s part of the fun. One minute you’re breezing through easy ones, and the next you’re arguing with your cousin about whether a square is technically a rectangle.

This set of maths trivia questions is great for classroom breaks, family game night, road trips, team competitions, or that one friend who still gets weirdly excited about fractions. Some questions are easy enough to answer in seconds, and others might make the whole room go quiet in the most competitive way possible.

The best part is that maths trivia doesn’t have to feel like homework. It works surprisingly well as a party game, a quick brain warm-up, or even a group chat challenge when everyone wants to prove they’re the smartest person in the thread.

Before you start, one small tip

A mixed round usually plays better than an all-hard round. Start with a few easy wins, throw in some pattern questions, then finish with the tougher stuff. People stay engaged longer when they feel like they actually have a shot.

Easy math trivia questions

What is the only even prime number?
Answer: 2

What is 7 multiplied by 8?
Answer: 56

How many sides does a triangle have?
Answer: 3

What is half of 100?
Answer: 50

What do you call a number that cannot be divided evenly by 2?
Answer: An odd number

What is the value of 9 squared?
Answer: 81

What is the sum of the angles in a triangle?
Answer: 180 degrees

What is 15 plus 27?
Answer: 42

What is the next number after 999?
Answer: 1000

What is the Roman numeral for 10?
Answer: X

What is 144 divided by 12?
Answer: 12

What shape has four equal sides and four right angles?
Answer: A square

What is the place value of the 5 in 5,432?
Answer: Thousands

How many months are there in a year?
Answer: 12

What is the answer to 20 minus 13?
Answer: 7

What do you call the answer to an addition problem?
Answer: The sum

What is 1,000 plus 1?
Answer: 1,001

How many zeros are in one hundred?
Answer: 2

What is one quarter of 20?
Answer: 5

What is the smallest whole number?
Answer: 0

Number trivia questions

What number comes next in this pattern: 2, 4, 8, 16, 32?
Answer: 64

What number is known as a dozen?
Answer: 12

How many digits are in a standard phone number in many countries before area code symbols or separators?
Answer: 10

What is the smallest prime number?
Answer: 2

Which number is not prime: 11, 13, 15, or 17?
Answer: 15

What is the next prime number after 7?
Answer: 11

What do you call a number with more than two factors?
Answer: A composite number

What is the least common multiple of 3 and 4?
Answer: 12

What is the greatest common factor of 12 and 18?
Answer: 6

Which number is larger: 0.5 or 0.05?
Answer: 0.5

What fraction is equal to 50%?
Answer: 1/2

What is 10 to the power of 2?
Answer: 100

What is 10 to the power of 3?
Answer: 1,000

What kind of number is 3.14 usually used to represent?
Answer: Pi

Is zero a positive number, a negative number, or neither?
Answer: Neither

What is the absolute value of -9?
Answer: 9

What is the next number in this sequence: 1, 1, 2, 3, 5, 8?
Answer: 13

What is the square root of 64?
Answer: 8

What is the cube of 3?
Answer: 27

What is the decimal equivalent of 3/4?
Answer: 0.75

Geometry trivia questions

How many sides does a pentagon have?
Answer: 5

How many sides does a hexagon have?
Answer: 6

What do you call a triangle with all three sides equal?
Answer: An equilateral triangle

What do you call a triangle with one angle greater than 90 degrees?
Answer: An obtuse triangle

How many degrees are in a right angle?
Answer: 90 degrees

What is the name of a shape with eight sides?
Answer: An octagon

What do you call the distance around a circle?
Answer: Circumference

What is the formula for the area of a rectangle?
Answer: Length × width

What is the formula for the area of a triangle?
Answer: 1/2 × base × height

What is the name for a line that goes through the center of a circle and touches both sides?
Answer: Diameter

How many faces does a cube have?
Answer: 6

How many vertices does a cube have?
Answer: 8

What do you call a four-sided shape with exactly one pair of parallel sides?
Answer: A trapezoid

How many degrees are in a full circle?
Answer: 360 degrees

What do you call an angle smaller than 90 degrees?
Answer: An acute angle

What is the perimeter of a square with side length 5?
Answer: 20

What is the area of a square with side length 4?
Answer: 16

A triangle has angles of 50 degrees and 60 degrees. What is the third angle?
Answer: 70 degrees

What is the radius of a circle with diameter 10?
Answer: 5

What 3D shape is a ball?
Answer: A sphere

Algebra and operations trivia

If x + 5 = 12, what is x?
Answer: 7

If 3x = 21, what is x?
Answer: 7

If y – 9 = 4, what is y?
Answer: 13

What is 12 ÷ 3 × 2?
Answer: 8

What is 5 + 6 × 2?
Answer: 17

What is 30 ÷ 5 + 7?
Answer: 13

Solve: 4(3 + 2)
Answer: 20

Solve: 18 – 6 ÷ 2
Answer: 15

What property is shown in 3 + 5 = 5 + 3?
Answer: Commutative property of addition

What property is shown in 2 × (3 × 4) = (2 × 3) × 4?
Answer: Associative property of multiplication

If a = 4 and b = 3, what is a + b?
Answer: 7

If a = 10 and b = 2, what is a – b?
Answer: 8

What is the product of 9 and 6?
Answer: 54

What is the quotient of 45 and 5?
Answer: 9

If 2x + 1 = 9, what is x?
Answer: 4

What is 11 squared?
Answer: 121

What is 100 divided by 25?
Answer: 4

What is the opposite of addition?
Answer: Subtraction

What is the opposite of multiplication?
Answer: Division

What is 2 to the power of 5?
Answer: 32

Famous mathematicians and math history trivia

Who is often called the “Father of Geometry”?
Answer: Euclid

Which mathematician is closely associated with the theorem about right triangles?
Answer: Pythagoras

Who is famous for the formula E = mc²?
Answer: Albert Einstein

Which English mathematician is widely linked with the development of calculus?
Answer: Isaac Newton

Which mathematician gives us the “Cartesian” plane?
Answer: René Descartes

Which ancient Greek scholar shouted “Eureka!” according to legend?
Answer: Archimedes

What female mathematician and writer from ancient Alexandria is often remembered for her work in mathematics and astronomy?
Answer: Hypatia

Which Indian mathematician became famous for remarkable work in number theory, infinite series, and continued fractions?
Answer: Srinivasa Ramanujan

Which Swiss mathematician has a famous number, formula, and identity all named after him?
Answer: Leonhard Euler

What is the name of the ancient mathematical text written by Euclid?
Answer: Elements

Symbols, terms, and trickier math trivia

What symbol means “not equal to”?
Answer: ≠

What symbol is used for multiplication in algebra besides ×?
Answer: *

What does the symbol π represent?
Answer: Pi, the ratio of a circle’s circumference to its diameter

What does the symbol % mean?
Answer: Percent

What kind of number is √2?
Answer: An irrational number

What is the name for a fraction with a larger numerator than denominator?
Answer: An improper fraction

What do you call a letter used to represent an unknown number?
Answer: A variable

If you divide 30 by 1/2 and then add 10, what do you get?
Answer: 70

Which is heavier: 1,000 pounds of feathers or 1,000 pounds of bricks?
Answer: Neither. They weigh the same.

What is the only whole number that has the same number of letters as its value?
Answer: Four

A quick way to use these in a group

If you want this to feel less like a test and more like an actual good time, try this order:

• Start with 10 easy questions
• Mix in 10 geometry or number questions
• Save the mathematician questions for the middle
• End with the trick questions because they usually get the biggest reactions

Math trivia works best when the round has range. A few people will love the formulas, a few will love the patterns, and somebody will absolutely get too confident and miss the feathers-versus-bricks question. That is part of the fun.