Fun Facts (Hints)
Different types of riddles have challenged people for centuries, here are a few facts about them that may give you some hints in solving these challenging questions:
Riddles in math are used by math teachers in many different cultures.
Many teachers promote the idea that giving students mathematical riddles helps to encourage their pupils to think more creatively and strategically.
These riddles are considered especially helpful in classrooms where students have emotional problems, as it pulls them away from their problems, and forces them to think creatively about what is before them.
Detectives are sometimes forced to solve riddles involving math when searching for psychopaths and serial killers.
Math riddles are used at home by many parents seeking to help their students become more engaged in their math schoolwork/homework.
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Fun Math Riddles

Mathematical riddles are a great way for math students and enthusiasts to stay excited and motivated. This collection of the best math questions from around the net ranges in difficulty, from the fairly easy to tough, while some are extremely difficult.
Are you ready to get your math on? Put on those thinking caps and go full speed ahead.
I Am A 3 Digit Number Between 400 And 800 Riddle
I am a 3 digit number between 400 and 800. My digits add up to 15. My ten's digit is twice my hundreds digit. What number am i?
Hint:
When Jake Was 9 Years Old Riddle
When Jake was 9 years old, Alice was 3 times younger than him. Now Jake is 30 years old, how old is Alice?
Hint:
Alice is now 3.
Alice wasn't born yet when Jake was 9 (3x9=27)
Jake is now 30 and Alice is 3 Did you answer this riddle correctly?
YES NO
Alice wasn't born yet when Jake was 9 (3x9=27)
Jake is now 30 and Alice is 3 Did you answer this riddle correctly?
YES NO
How Many Days In 4 Years Riddle
Hint:
1461
The answer to the riddle is 1461. The riddle asks for 4 years.Therefore,
(365 x 4) + 1 = 1461.
One is added because one of the 4 years is a leap year. Hence, 1461 is the answer. Did you answer this riddle correctly?
YES NO
The answer to the riddle is 1461. The riddle asks for 4 years.Therefore,
(365 x 4) + 1 = 1461.
One is added because one of the 4 years is a leap year. Hence, 1461 is the answer. Did you answer this riddle correctly?
YES NO
8 College Students Riddle
There was a group of 8 college students who all belonged to the mountain climbing club. One day, during the Winter, they decided to climb the tallest mountain in the area. During the ascent, the weather took a turn for the worse. They ran into trouble and were stranded near the top for two weeks.
Eventually, a rescue team managed to reach them. There were only 7 survivors. They were airlifted to a nearby hospital. After a few days, 6 of them made a full recovery, but the seventh survivor was so traumatized by the experience that he lost his mind and was put in a mental hospital.
The police questioned the remaining 6 about what happened during the two weeks they were stranded on the mountain. They asked what happened to the missing climber.
He just wandered off and never came back, they said. The police questioned each of the 6 survivors and they all told the same story.
Then, they went to the mental hospital to question the 7th survivor, but they couldnt get any sense out of him. When they asked him what happened to the missing climber, he just kept banging his head against the padded walls and repeating over and over, 8.. 8 8...
What does this mean?
Eventually, a rescue team managed to reach them. There were only 7 survivors. They were airlifted to a nearby hospital. After a few days, 6 of them made a full recovery, but the seventh survivor was so traumatized by the experience that he lost his mind and was put in a mental hospital.
The police questioned the remaining 6 about what happened during the two weeks they were stranded on the mountain. They asked what happened to the missing climber.
He just wandered off and never came back, they said. The police questioned each of the 6 survivors and they all told the same story.
Then, they went to the mental hospital to question the 7th survivor, but they couldnt get any sense out of him. When they asked him what happened to the missing climber, he just kept banging his head against the padded walls and repeating over and over, 8.. 8 8...
What does this mean?
Hint:
How Many 9 In 100 Riddle
Hint:
There are total 20 nine's between 1 and 100. 9, 19, 29, 39, 49, 59, 69, 79, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99. you can count total 9 in these series. Did you answer this riddle correctly?
YES NO
YES NO
Shoe Guy Scarf Riddle
Hint:
43. Shoe (5) + Man, two scarves and two shoes (19) times scarf (2).
19 x 2 is 38. 38 + 5 is 43. Did you answer this riddle correctly?
YES NO
19 x 2 is 38. 38 + 5 is 43. Did you answer this riddle correctly?
YES NO
12 = 6 And 6 = 3 Riddle
Hint:
12 (Twelve) has 6 letters,
6 (Six) has 3
Therefore,
10 (Ten) will be equal to 3 Did you answer this riddle correctly?
YES NO
6 (Six) has 3
Therefore,
10 (Ten) will be equal to 3 Did you answer this riddle correctly?
YES NO
Divide The Sun Riddle
Hint:
A Stubborn Angle Riddle
Hint:
Two Angles Collided Riddle
Hint:
In geometry, an angle is the figure formed by two rays, called the sides of the angle, sharing a common endpoint, called the vertex of the angle. "Collided" is not a situation that applies to angles. Did you answer this riddle correctly?
YES NO
YES NO
The Upset Sergeant Riddle
Hint:
1500 Plus 20 And 1600 Minus 40 Riddle
Hint:
Mermaid Math Class Riddle
Hint:
Math Therapy Riddle
Hint:
Late Home Work Riddle
Hint:
Post Your Math Riddles Puns Below
Can you come up with a cool, funny or clever Math Riddles of your own? Post it below (without the answer) to see if you can stump our users.
1. Why was the math book sad? Because it had too many problems.
2. Why don’t mathematicians sunbathe at the beach? Because they use imaginary numbers.
3. What did the math teacher say to her students on Valentine’s Day? "Let’s make some propositions!"
4. Why do math teachers love geometry? Because it’s plane fun.
5. Why was six afraid of seven? Because seven eight nine.
6. Why do mathematicians love parks? Because of all the natural logarithms.
7. What’s the best way to impress a math teacher? Multiply yourself and add your standard deviation.
8. What do you get when you cross a math teacher and a clock? Time tables.
9. How can you tell if a math teacher is hungry? They start talking about Pie.
10. Did you hear about the math expert who’s afraid of negative numbers? He will stop at nothing to avoid them.
11. How do construction workers do math? With a calculator-i!
12. What do you get when you cross a math teacher and a train? A geometric progression.
13. Why do math teachers love chicken? Because it’s a good source of pi protein.
14. What did the calculus teacher say to her students who were failing? "Don’t integrate yourself into a problem that you can’t differentiate your way out of."
15. Why was the math book sad after prom? All its angles were acute, and the book felt so…almost right-angled.
16. What did the math teacher say to his students who were having trouble understanding fractions? "The key to understanding fractions is to pick up the pieces."
17. Why was the geometry class always tired? Because they were constantly finding the hypotenuse.
18. What is the plural of "summit"? Math teachers would tell you it’s "summation."
19. What do you say when you see a math teacher eating a sandwich? Square root of ‘yum’?
20. What do you call a number that can’t keep still? A roamin’ numeral!
21. Why did the math professor take out a loan? To sine on the dotted line.
22. Why couldn’t the bicycle stand up by itself? Because it was two-tired!
23. Why did the math student fail his exam? He couldn’t solve any of the problems on the standard deviation curve.
24. Why was the math book so tense? Because it had too many problems to solve.
25. Why do mathematicians like stories? Because they always have a good plot and sets of numbers.
26. Why did the math teacher go to the circus? To see the math-tractions!
27. Why don’t mathematicians ride motorcycles? They don’t like to take chances with angles.
28. What’s a math teacher’s favorite day of the week? Pi Day!
29. What do you call the number 7 and the number 3 when they go on a date? A product of their times.
30. Why did the math teacher cross the road? To get to the calculator on the other side.
31. Why was the math book so afraid of the circle? Because it was perfectly round.
32. What do you call a group of math teachers? Geometree.
33. Why was the math student’s dream so vivid? Because it was linear.
34. Why do mathematicians like nature? Because it’s full of exponential growth.
35. What do you call a math teacher who teaches addition? A sum-thing genius.
36. Why was the calculator feeling sad? Because it had no friends to divide by.
37. Why did the math teacher go to the beach? To catch some rays.
38. What do you call a math teacher who knows how to party? The Calculus of Fun.
39. Why can’t a bike stand up by itself? Because it’s two-tired!
40. What do you call a number that can keep a secret? A cryptonumber!
41. Why did the math book get a detention? It couldn’t keep its digits to itself.
42. How can you tell if a math teacher is happy? They’re always positively charged.
43. What do you call a mathematician who’s always cold? An absolute zero.
44. Why can’t a pirate do math? He always forgets the Aye on Pi-Day.
45. What do you get when you cross a math teacher and an elephant? Trunkated numbers.
46. Why did the math teacher need a ladder? To find the square root of the roof.
47. What do you call a math teacher who loves puns? A funny-tioning.
48. What did the right triangle say to the isosceles triangle? "You’re so acute!"
49. What did the math teacher say when her student got a C+? "You’ll do better next time, don’t be so negative."
50. Why do math teachers hate fractions? Because they’re always getting mixed up.
1. Why was the math book sad? Because it had too many problems.
2. Why don’t mathematicians sunbathe at the beach? Because they use imaginary numbers.
3. What did the math teacher say to her students on Valentine’s Day? "Let’s make some propositions!"
4. Why do math teachers love geometry? Because it’s plane fun.
5. Why was six afraid of seven? Because seven eight nine.
6. Why do mathematicians love parks? Because of all the natural logarithms.
7. What’s the best way to impress a math teacher? Multiply yourself and add your standard deviation.
8. What do you get when you cross a math teacher and a clock? Time tables.
9. How can you tell if a math teacher is hungry? They start talking about Pie.
10. Did you hear about the math expert who’s afraid of negative numbers? He will stop at nothing to avoid them.
11. How do construction workers do math? With a calculator-i!
12. What do you get when you cross a math teacher and a train? A geometric progression.
13. Why do math teachers love chicken? Because it’s a good source of pi protein.
14. What did the calculus teacher say to her students who were failing? "Don’t integrate yourself into a problem that you can’t differentiate your way out of."
15. Why was the math book sad after prom? All its angles were acute, and the book felt so…almost right-angled.
16. What did the math teacher say to his students who were having trouble understanding fractions? "The key to understanding fractions is to pick up the pieces."
17. Why was the geometry class always tired? Because they were constantly finding the hypotenuse.
18. What is the plural of "summit"? Math teachers would tell you it’s "summation."
19. What do you say when you see a math teacher eating a sandwich? Square root of ‘yum’?
20. What do you call a number that can’t keep still? A roamin’ numeral!
21. Why did the math professor take out a loan? To sine on the dotted line.
22. Why couldn’t the bicycle stand up by itself? Because it was two-tired!
23. Why did the math student fail his exam? He couldn’t solve any of the problems on the standard deviation curve.
24. Why was the math book so tense? Because it had too many problems to solve.
25. Why do mathematicians like stories? Because they always have a good plot and sets of numbers.
26. Why did the math teacher go to the circus? To see the math-tractions!
27. Why don’t mathematicians ride motorcycles? They don’t like to take chances with angles.
28. What’s a math teacher’s favorite day of the week? Pi Day!
29. What do you call the number 7 and the number 3 when they go on a date? A product of their times.
30. Why did the math teacher cross the road? To get to the calculator on the other side.
31. Why was the math book so afraid of the circle? Because it was perfectly round.
32. What do you call a group of math teachers? Geometree.
33. Why was the math student’s dream so vivid? Because it was linear.
34. Why do mathematicians like nature? Because it’s full of exponential growth.
35. What do you call a math teacher who teaches addition? A sum-thing genius.
36. Why was the calculator feeling sad? Because it had no friends to divide by.
37. Why did the math teacher go to the beach? To catch some rays.
38. What do you call a math teacher who knows how to party? The Calculus of Fun.
39. Why can’t a bike stand up by itself? Because it’s two-tired!
40. What do you call a number that can keep a secret? A cryptonumber!
41. Why did the math book get a detention? It couldn’t keep its digits to itself.
42. How can you tell if a math teacher is happy? They’re always positively charged.
43. What do you call a mathematician who’s always cold? An absolute zero.
44. Why can’t a pirate do math? He always forgets the Aye on Pi-Day.
45. What do you get when you cross a math teacher and an elephant? Trunkated numbers.
46. Why did the math teacher need a ladder? To find the square root of the roof.
47. What do you call a math teacher who loves puns? A funny-tioning.
48. What did the right triangle say to the isosceles triangle? "You’re so acute!"
49. What did the math teacher say when her student got a C+? "You’ll do better next time, don’t be so negative."
50. Why do math teachers hate fractions? Because they’re always getting mixed up.