Hey! So I was sitting with my notebook the other day, trying to solve some Math Riddles for Teens, and I realized I was stuck on this one tricky problem.
I thought, Okay, I’ve faced tough problems before, I can handle this too. I tried a few different approaches, made some mistakes, but then I figured out a fun way to solve it.
That’s when I thought, why not share these Math Riddles for Teens? I know exactly how frustrating yet exciting it can be.
I promise, these riddles will make solving math feel like a cool challenge rather than a chore.
Let’s dive in!
Easy Math Riddles for Teens
- 🧮 I am a two digit number. The sum of my digits is 9. If you reverse me, the number increases by 9. What am I?
Answer: 36 - 🔢 I am an odd number. Take away one letter and I become even. What number am I?
Answer: Seven - 🟰 What has keys but can’t open locks?
Answer: A calculator - ➕ I am a number that is the product of 3 and 4. What am I?
Answer: 12 - 🧩 Add me to myself and multiply by 4. Then divide by 8, and you get me again. What number am I?
Answer: Any number - 🔢 I am a number. If you multiply me by 2 and then add 6, you get 18. What number am I?
Answer: 6 - 🟰 I am less than 10 but greater than 5. If you square me, you get a number between 25 and 100. What am I?
Answer: 6, 7, 8, or 9 - 🧮 I am a number divisible by both 2 and 3 but not by 5. What am I?
Answer: 6 - ➕ I am a number. Double me and subtract 10, the result is 0. What am I?
Answer: 5 - 🔢 I have three digits. The first digit is twice the second, and the third is the sum of the first two. What number am I?
Answer: 242 - 🧩 A number decreased by 7 becomes 14. What is the number?
Answer: 21 - 🟰 What number do you get if you multiply all the numbers on a phone keypad?
Answer: 0 - 🔢 I am a number. If you add me to 15, you get 30. What number am I?
Answer: 15 - 🧮 Multiply me by myself and the result is 49. What number am I?
Answer: 7 - ➕ I am an even number. If you subtract 4, you get 10. What number am I?
Answer: 14
Tricky Math Riddles for Teens
- 🧮 I am a number between 20 and 30. Divide me by 2 and subtract 5, you get 5. What am I?
Answer: 20 - 🔢 If two’s company and three’s a crowd, what’s four and five?
Answer: Nine - ➕ I am a number. Add me to 11, multiply by 2, subtract 4, and the result is 36. What am I?
Answer: 14 - 🟰 The sum of three consecutive numbers is 72. What are the numbers?
Answer: 23, 24, 25 - 🧩 I am a number. Multiply me by 5, then subtract 15, the result is 10. What am I?
Answer: 5 - 🔢 I am a number. If you subtract 3 from me and multiply by 2, you get 14. What am I?
Answer: 10 - 🧮 I am a number that remains the same when you reverse my digits. I am less than 100. What number am I?
Answer: 11, 22, 33, … 99 - ➕ Multiply me by 3, then subtract 9, you get 12. What number am I?
Answer: 7 - 🔢 I am the only even prime number. What am I?
Answer: 2 - 🟰 I am a number. If you divide me by 2 and add 8, you get 18. What am I?
Answer: 20 - 🧩 A number plus twice itself equals 27. What is the number?
Answer: 9 - 🔢 I am a two digit number. My tens digit is 3 more than my ones digit. What number am I?
Answer: 41 - 🧮 I am a number between 50 and 60. Subtract 7, then divide by 2, and you get 22. What am I?
Answer: 51 - ➕ I am a number. Multiply me by 4 and subtract 10, you get 14. What am I?
Answer: 6 - 🔢 I am a square number less than 50 and greater than 10. What am I?
Answer: 16, 25, 36, 49
Algebra Riddles for Teens
- 🧮 Solve: 2x + 5 = 15. What is x?
Answer: 5 - 🔢 Solve: 3x 7 = 11. What is x?
Answer: 6 - ➕ Solve: 5x + 2 = 17. What is x?
Answer: 3 - 🟰 Solve: 4x 9 = 7. What is x?
Answer: 4 - 🧩 Solve: x/3 + 5 = 12. What is x?
Answer: 21 - 🔢 Solve: 7x 14 = 21. What is x?
Answer: 5 - 🧮 Solve: 9x + 6 = 30. What is x?
Answer: 8/3 - ➕ Solve: 2x + 8 = 18. What is x?
Answer: 5 - 🟰 Solve: 3x + 4 = 19. What is x?
Answer: 5 - 🧩 Solve: 8x 16 = 32. What is x?
Answer: 6 - 🔢 Solve: x/5 + 3 = 7. What is x?
Answer: 20 - 🧮 Solve: 6x + 2 = 20. What is x?
Answer: 3 - ➕ Solve: 10x 5 = 25. What is x?
Answer: 3 - 🟰 Solve: 12x + 6 = 30. What is x?
Answer: 2 - 🧩 Solve: 4x/2 + 3 = 11. What is x?
Answer: 4
Geometry Riddles for Teens
- 🔺 I have 3 sides and 3 angles. What am I?
Answer: Triangle - 🟦 I have 4 equal sides and 4 right angles. What am I?
Answer: Square - 🔷 I am a 3D shape with 6 faces, all squares. What am I?
Answer: Cube - ⭕ I have no corners and no sides. What am I?
Answer: Circle - 🟪 I have 4 sides, opposite sides equal, but angles aren’t right. What am I?
Answer: Rectangle - 🔺 I am a triangle with all sides equal. What am I?
Answer: Equilateral triangle - 🔷 I am a polygon with 5 sides. What am I?
Answer: Pentagon - 🟦 I am a polygon with 6 sides. What am I?
Answer: Hexagon - 🔺 I have 3 sides and one angle of 90 degrees. What am I?
Answer: Right triangle - ⭕ I am a 3D object like a can. What am I?
Answer: Cylinder - 🟪 I have 4 sides, 2 equal lengths opposite, 2 angles equal opposite. What am I?
Answer: Parallelogram - 🔷 I am a shape with no edges, like a bubble. What am I?
Answer: Sphere - 🔺 I am a triangle with 2 equal sides. What am I?
Answer: Isosceles triangle - 🟦 I am a 3D shape with a circular base and pointed top. What am I?
Answer: Cone - 🔷 I am a prism with rectangular sides and two triangular bases. What am I?
Answer: Triangular prism
Number Riddles for Teens
- 🔢 I am a number that when added to 7 equals 12. What am I?
Answer: 5 - 🧮 I am a number. Double me and subtract 6, the result is 8. What am I?
Answer: 7 - ➕ I am the smallest prime number greater than 10. What am I?
Answer: 11 - 🟰 I am an odd number. The sum of my digits is 10. What am I?
Answer: 55 - 🧩 I am a two digit number. My digits add to 11. What am I?
Answer: 29, 38, 47, 56, 65, 74, 83, 92 - 🔢 I am a multiple of 9, less than 50. What am I?
Answer: 9, 18, 27, 36, 45 - 🧮 I am a square number greater than 20 and less than 50. What am I?
Answer: 25, 36, 49 - ➕ I am a cube number less than 50. What am I?
Answer: 1, 8, 27 - 🟰 I am a number divisible by 7 and less than 50. What am I?
Answer: 7, 14, 21, 28, 35, 42, 49 - 🧩 I am a two digit number divisible by 5. What am I?
Answer: 10, 15, 20, 25 … 95 - 🔢 I am a prime number between 50 and 100. What am I?
Answer: 53, 59, 61, 67, 71, 73, 79, 83, 89, 97 - 🧮 I am an odd number between 20 and 40 divisible by 3. What am I?
Answer: 21, 27, 33, 39 - ➕ I am a multiple of 8 between 20 and 50. What am I?
Answer: 24, 32, 40, 48 - 🟰 I am a number. When divided by 4, I leave a remainder of 3. What am I?
Answer: 3, 7, 11, 15 … - 🧩 I am a number. Multiply me by 6, and you get 54. What am I?
Answer: 9
Logic Math Riddles for Teens
- 🧮 I am a three digit number. My hundreds digit is 1 more than my ones digit. My tens digit is 2 less than my hundreds digit. What number am I?
Answer: 231 - 🔢 There are 12 apples. You take away 5. How many do you have?
Answer: 5 - ➕ I am thinking of two numbers. Their sum is 15 and their difference is 5. What are the numbers?
Answer: 10 and 5 - 🟰 If you have 6 eggs and you break 2, fry 2, and eat 2, how many are left?
Answer: 6 (the same eggs were broken, fried, eaten) - 🧩 A farmer has 17 sheep, and all but 9 run away. How many are left?
Answer: 9 - 🔢 I am a number. Multiply me by any number and the answer is always me. What am I?
Answer: 0 - 🧮 I am a number. Add me to 20 and the result is 25. What am I?
Answer: 5 - ➕ You have a basket with 5 apples. You give 2 to a friend. How many apples do you have?
Answer: 3 - 🟰 A clock shows 3 PM. What’s the angle between hour and minute hands?
Answer: 90 degrees - 🧩 I am a number. If you subtract me from 100, the result is 45. What am I?
Answer: 55 - 🔢 Two fathers and two sons sit for breakfast, but only 3 eat. How?
Answer: They are grandfather, father, and son - 🧮 I am a number. When added to itself, I get 18. What am I?
Answer: 9 - ➕ There are 10 birds on a tree. A hunter shoots one. How many are left?
Answer: 0 (others flew away) - 🟰 I am thinking of a number. Multiply me by 3, subtract 4, you get 8. What am I?
Answer: 4 - 🧩 I am a number. The sum of my digits is 6. I am less than 50. What am I?
Answer: 6, 15, 24, 33, 42
Fraction Riddles for Teens
- 🧮 I am half of 2/3. What am I?
Answer: 1/3 - 🔢 I am a number. One fourth of me is 3. What am I?
Answer: 12 - ➕ I am a number. Two thirds of me is 8. What am I?
Answer: 12 - 🟰 I am a fraction. Add 1/2 to me, the result is 3/4. What am I?
Answer: 1/4 - 🧩 I am a fraction. Multiply me by 4 and get 1. What am I?
Answer: 1/4 - 🔢 I am a fraction. 3/5 of me is 9. What am I?
Answer: 15 - 🧮 I am a fraction. 2/7 of me is 6. What am I?
Answer: 21 - ➕ I am a fraction. Add me to 3/8 and get 7/8. What am I?
Answer: 4/8 or 1/2 - 🟰 I am a fraction. Multiply me by 10 and get 5. What am I?
Answer: 1/2 - 🧩 I am a fraction. One third of me is 2. What am I?
Answer: 6 - 🔢 I am a fraction. Subtract 1/6 from me, result is 1/3. What am I?
Answer: 1/2 - 🧮 I am a fraction. Multiply me by 12, get 9. What am I?
Answer: 3/4 - ➕ I am a fraction. Add 2/5 to me, result is 4/5. What am I?
Answer: 2/5 - 🟰 I am a fraction. One fourth of me equals 5. What am I?
Answer: 20 - 🧩 I am a fraction. Multiply me by 6, get 3. What am I?
Answer: 1/2
Multiplication Riddles for Teens
- 🔢 Multiply me by 0, you get 0. What am I?
Answer: Any number - 🧮 Multiply me by 1, you get me. What am I?
Answer: Any number - ➕ Multiply 6 by 7, what do you get?
Answer: 42 - 🟰 Multiply a number by itself to get 81. What is the number?
Answer: 9 - 🧩 Multiply me by 4 to get 28. What am I?
Answer: 7 - 🔢 Multiply 15 by 3, what do you get?
Answer: 45 - 🧮 Multiply 12 by 6, what do you get?
Answer: 72 - ➕ Multiply me by 2, result is 10. What am I?
Answer: 5 - 🟰 Multiply 8 by 9, what do you get?
Answer: 72 - 🧩 Multiply 5 by 5, what do you get?
Answer: 25 - 🔢 Multiply 7 by 11, what do you get?
Answer: 77 - 🧮 Multiply me by 3 to get 27. What am I?
Answer: 9 - ➕ Multiply 14 by 2, what do you get?
Answer: 28 - 🟰 Multiply 9 by 9, what do you get?
Answer: 81 - 🧩 Multiply 6 by 8, what do you get?
Answer: 48
Word Problem Riddles for Teens
- 🧮 John has 12 apples. He gives 5 to Mary. How many apples does he have now?
Answer: 7 - 🔢 A car travels 60 miles in 1 hour. How far in 3 hours?
Answer: 180 miles - ➕ If 5 pencils cost $10, what is the cost of 1 pencil?
Answer: $2 - 🟰 There are 20 students. Half go home. How many stay?
Answer: 10 - 🧩 Sarah has 15 candies. She eats 3. How many left?
Answer: 12 - 🔢 A train moves at 50 km/h. How far in 2 hours?
Answer: 100 km - 🧮 A rectangle has length 10, width 5. Area?
Answer: 50 - ➕ A bus holds 40 passengers. 25 get on. How many empty seats?
Answer: 15 - 🟰 Tom buys 3 books for $12 each. Total cost?
Answer: $36 - 🧩 A bag has 12 balls, 4 red. Fraction red?
Answer: 1/3 - 🔢 A store sells 8 candies per pack. How many packs for 64 candies?
Answer: 8 - 🧮 If a pizza is cut into 8 slices, John eats 3. Fraction left?
Answer: 5/8 - ➕ A bike moves 12 km/hour. How far in 5 hours?
Answer: 60 km - 🟰 Mary has 50 chocolates. She gives 20 to friends. Left?
Answer: 30 - 🧩 If 3 pens cost $9, 7 pens cost?
Answer: $21
Conclusion
Math doesn’t have to be boring! These Math Riddles for Teens sharpen your logical thinking, enhance problem solving skills, and make learning fun.
Challenge yourself, friends, or classmates with these riddles and see who can solve them the fastest.
Keep practicing and soon, numbers will start making a lot more sense and math will feel like a game rather than a chore.
Lover of brain teasers and riddles, sharing fun and thought-provoking puzzles on RiddleSpark.com to engage and challenge curious minds.
