100+ Challenging math riddles to keep your mind sharp

If you want to improve your mathematical skills and challenge your brain, these 100+ math riddles are for you. From basic arithmetic to advanced algebra, these math puzzles and math equations will test your problem solving abilities and help you hone your math skills. These riddles are a fun and engaging way to improve your math skills. Check your answers against the provided solutions or try to solve them all on your own. Either way, you'll be sure to have a good time while you're at it.

Three Positive Number -Math riddle

61.Math Riddles

You are given 3 positive numbers. You can add these numbers and multiply them together. The result you get will be the same. Which are the numbers?


                  

    • 1, 2, and 3.
      Explanation :  
      1,2 and 3 As:
      1+2+3=6
      and
      1*2*3=6
      1,2 and 3 are the positive integers and the result of their addition and their multiplication is same.

John,Mark and Henry Age -Math riddle

62.Math Riddles

John, Mark, and Henry are three brothers. Interestingly, their current age is prime. What's more interesting is that difference between their ages is also prime. How old are they?


                  

    • Mark is 2, John is 5, 
      and Henry is 7. 
      
      Explanation :  Age diff 7 – 2 = 5 is prime;  7 – 5 = 2 is prime; 5 – 2 = 3 is prime.

The Wedding Shower Gift -Math riddle

63.Math Riddles

Janie's friends were chipping in to buy her a wedding shower present. At first, 10 friends chipped in, but 2 of them dropped out. Each of the 8 had to chip in another dollar to bring the amount back up. How much money did they plan to collect?


                  

    • 
                              
                              
      Explanation :  $40 (10 at $4, or 8 at $5)

John was six years old -Math riddle

64.Math Riddles

When John was six years old he hammered a nail into his favorite tree to mark his height. Ten years later at age sixteen, John returned to see how much higher the nail was. If the tree grew by five centimeters each year, how much higher would the nail be?


                  

    • 
                              
                              
      Explanation :  The nail would be at the same height since trees grow at their tops.

How many circles -Math riddle

65.Math Riddles

How many circles contain the black dots?


                  

  • A.12
  • B.17
  • C.20
  • D.6
A.12
    • Explanation :  See the image carefully for answer

Duck Rabit Dog Weight-Math riddle

66.Math Riddles

Duck rabbit 10kgs, Dog rabbit 20kgs, Dog duck 24kgs, Duck dog rabbit =?


                  

  • A.25
  • B.35
  • C.27
  • D.40
C.27
    • Explanation :  27,
      Let the duck be ?Du?
      The dog be ?Do?
      The rabbit be ?R?.
      From the above picture,
      we can form equations as,
      R + Du = 10kg.?equation (1)
      R + Do = 20kg?.equation (2)
      Do + Du = 24kg?equation (3)
      & R + Do + Du = ?
      Rearranging the equations,
      equation (1) = R + Du = 10kg
      Du = 10kg ? R
      equation (2) = R + Do = 20kg
      Do = 20kg ? R
      Putting the values of Do & Du in equation (3),
      Do + Du = 24kg
      20kg ? R + 10kg ? R = 24kg
      30kg ? 2R = 24kg
      2R = 6
      Rabbit, R = 3kg
      Substituting the value of R, in equation (1) & equation (2)
      We get,
      equation (1), R + Du = 10kg
      3 + Du = 10kg
      Duck, Du = 7kg
      Also, equation(2), R + Do = 20kg
      3 + Do = 20kg
      Dog, Do = 17kg.
      Adding the values of,
      Do + Du + R = 3 + 7 + 17
      Dog + Duck + Rabbit = 27kg.

Move just 2 matchsticks - Math Riddle

68.Math Riddles

Move just 2 matchsticks to make the equation Correct.


                  

  • A.8
  • B.3
  • C.3
  • D.8
A.8
    • Explanation :  A (+ 8)
      9-9=0. Move one from the addition sign to make it a subtraction sign, and put it to 3 to make 9, 2. move one from 8 to make it 9.

Find the missing number- Math Puzzle

69.Math Riddles

Can you find the missing number?


                  

  • A. 4
  • B. 3
  • C. 5
  • D. 8
B. 3
    • Explanation :  horizontal multiplication - vertical multiplication
      6*6 - 7*5 = 1
      for answer 7*3 - 9*2 = 3

Photo Math With Answer - Math Riddle

70.Math Riddles

Can you find the missing number?


                  

  • A.14
  • B.20
  • C.15
  • D.25
C.15
    • Explanation :  just put the values of the balls and add them you will get 15

How many triangles - Math Riddle

71.Math Riddles

How many triangles can you count in this shape?


                  

  • A.13
  • B.10
  • C.15
  • D.9
A.13
    • Explanation :  Count step by step without leaving any triangle formation

10 small boxes into a carton- Math Riddle

72.Math Riddles

A merchant can place 8 large boxes or 10 small boxes into a carton for shipping. In one shipment, he sent a total of 96 boxes. If there are more large boxes than small boxes, how many cartons did he ship?


                  

  • A.106
  • B.90
  • C.115
  • D.96
D.96
    • Explanation :  7 large boxes (7 x 8 = 56 boxes)
      4 small boxes (4 x 10 = 40 boxes)
      So the answer is 11 total cartons for 96 boxes

A 35 year old woman - Math Riddle

73.Math Riddles

A 35 year old woman has 3 children. If you multiply the 3 children's ages, you get 36. If you add up the children's ages it's 13. And her oldest child plays basketball for 3 years. How old are the kids?


                  

    • They are 2, 2, and 9.
      
      Explanation :  If you list out the trio of factors that multiply to 36, you get: 1 1 36 = 38 1 2 18 = 21 1 3 12 = 16 1 4 9 = 14 6 6 1 = 13 2 2 9 = 13 2 3 6 = 11 3 3 4 = 10 If the sum is 13, as you can see, there are 2 options. When she sa ys her 'oldest' you know it cannot be {6, 6, 1} since she would have two 'older' sons, not an 'oldest'.

Find the value - Math Riddle

74.Math Riddles

Can you find the value of the missing number?


                  

  • A. 14
  • B. 9
  • C. 11
  • D. 16
A. 14
    • Explanation :  The outer number is the sum of the numbers in the two segments immediately across the line connecting big Circle to small Circle.

Find The Number - Math Riddle

75.Math Riddles

Can you find the number?


                  

  • A.169
  • B.926
  • C.849
  • D.846
A.169
    • Explanation :   first digit * first digit
      third digit * third digit 
      398 = 964 (3*3 8*8). So 423 = 169 (4*4 3*3)