Math Riddles

A collection of Math Riddles for fun and pleasure! Tease your brain with these riddles, then click click for answer to show or hide the answer. (Note: You may need to enable JavaScript on your browser for the answers to show properly.)

Also visit our Math Trivia page for more arithmetic riddles, algebra riddles, geometry riddles, statistics riddles etc.


  1. Why should you never mention the number 288 in front of anyone? click for answer
  2. Which weighs more?  A pound of iron or a pound of feathers? click for answer
  3. How is the moon like a dollar? click for answer
  4. What is alive and has only 1 foot? click for answer
  5. When do giraffes have 8 feet? click for answer
  6. How many eggs can you put in an empty basket? click for answer
  7. What coin doubles in value when half is deducted? click for answer
  8. What is the difference between a new penny and an old quarter? click for answer
  9. If you can buy eight eggs for 26 cents, how many can you buy for a cent and a quarter? click for answer
  10. Where can you buy a ruler that is 3 feet long? click for answer


  11. If there were 9 cats on a bridge and one jumped over the edge, how many would be left? click for answer
  12. If you take three apples from five apples, how many do you have? click for answer
  13. What has 4 legs and only 1 foot? click for answer
  14. How many times can you subtract 6 from 30? click for answer
  15. If one nickel is worth five cents, how much is half of one half of a nickel worth? click for answer
  16. How many 9's between 1 and 100? click for answer
  17. Which is more valuable - one pound of $10 gold coins or half a pound of $20 gold coins? click for answer
  18. It happens once in a minute, twice in a week, and once in a year. What is it? click for answer
  19. How can half of 12 be 7? click for answer
  20. When things go wrong, what can you always count on? click for answer


  21. Which month has 28 days? click for answer
  22. What’s the easiest way to double your money? click for answer
  23. What occurs twice in a week, once in a year but never in a day? click for answer
  24. Where do fish keep their money? click for answer
  25. Why is the longest human nose on record only 11 inches long? click for answer
  26. Why are diapers like 100 dollar bills? click for answer
  27. A street that is 40 yards long has a tree every 10 yards on both sides. How many trees are there on the entire street? click for answer
  28. What goes up and never comes down? click for answer
  29. What did one math book say to the other math book? click for answer
  30. I am an odd number; take away a letter and I become even. What number am I? click for answer


  31. As I was going to St. Ives
    I met a man with seven wives.
    Each wife had seven sacks,
    Each sack had seven cats,
    Each cat had seven kits;
    Kits, cats, sacks and wives,
    How many were going to St. Ives? click for answer


  32. You want to cross a bridge to get to the other side of the crevice, but there's a problem. The bridge, which takes an hour to walk across, is guarded in the middle by a guard who wakes up every half hour and carries back anybody crossing the bridge back to where he or she came from. How long does it take for me to get to the other side? click for answer




  33. What are the 10 types of people in the world? click for answer

  34. Why didn't the quarter roll down the hill with the nickel? click for answer

  35. What happened to the plant in math class? click for answer

  36. Why did the chicken cross the mobius strip? click for answer

  37. Why did I divide sin by tan? click for answer

  38. Where do math teachers go on vacation? click for answer

  39. What do you call a number that can't keep still? click for answer

  40. Why did the mutually exclusive events break up? click for answer

  41. How does a mathematician induce good behavior in her children? click for answer

  42. How do you know when you've reached your Math Professors voice-mail? click for answer




  43. Why did the 30-60-90 triangle marry the 45-45-90 triangle? click for answer

  44. Why didn't the Romans find algebra very challenging? click for answer

  45. Why couldn't the angle get a loan? click for answer

  46. What do you call an angle that is adorable? click for answer

  47. What do you call a destroyed angle? click for answer

  48. Why did the student get upset when his teacher called him average? click for answer

  49. Why does nobody talk to circles? click for answer

  50. Which triangles are the coldest? click for answer

  51. What do you call a dead parrot? click for answer

  52. What's the difference between a diameter and a radius? click for answer

  53. How do deaf mathematicians communicate? click for answer

  54. What do organic mathematicians throw into their fireplaces? click for answer

  55. Why shouldn't you argue with a decimal? click for answer

  56. How many mathematicians does it take to change a light bulb? click for answer

  57. Why did the chicken cross the road? click for answer

  58. What did the circle say to the tangent line? click for answer

  59. Why do mathematicians like parks? click for answer

  60. What kind of tree could a math teacher climb? click for answer



  61. OML Search

    We welcome your feedback, comments and questions about this site or page. Please submit your feedback or enquiries via our Feedback page.


OML Search