# 60 Best Math Riddles for Kids with Answers

Welcome to this article, your ticket to a world where numbers come alive and puzzles are the keys to unlocking knowledge! At **WuKong Education**, we believe that learning should be an adventure, filled with excitement and joy. What are some good math riddles? Let’s embark on this mathematical journey where every answer reveals a little more magic in the wonderful world of numbers. Each math riddle is designed to ignite your curiosity and deepen your understanding of math in the most entertaining way possible.

## Part1. Fun Math Riddles for Kids with Answers

**Riddle:** I’m light as a feather, yet even the strongest man can’t hold me for long. What am I?**Answer:** Your breath. (Not exactly math, but introduces the concept of measuring something intangible)

**Riddle:** If two’s company and three’s a crowd, what’s four and five after a busy day?**Answer:** Nine, because they’re tired (tens).

**Riddle:** I speak without a mouth and hear without ears. I have no body, but I come alive with wind. What number am I?**Answer:** Zero, as it’s often spoken and can appear anywhere in a number.

**Riddle:** I’m a number that when you take away from nine, you get more. Who am I?**Answer:** Any number greater than nine, introducing subtraction and the idea of negative results.

**Riddle:** Forward, I’m heavy; backward, I’m not. What digit am I?**Answer:** Eight (8), which backwards is “ate,” suggesting something consumed or light.

**Riddle:** I’m a number between 1 and 100. Divide me by two, and I become a bird. What am I?**Answer:** Fifty (50), as “fifty” divided by two sounds like “flew” (a bird flew).

**Riddle:** I am a number that is both odd and even. How can this be?**Answer:** The number zero, which is even (divisible by 2) but also considered neither odd nor even in some contexts.

**Riddle:** What number is so hungry that it eats itself?**Answer:** Eight (8), as when you turn it sideways, it looks like the infinity symbol (∞), suggesting it’s never satisfied.

**Riddle:** I’m always coming but never arrive. What number am I?**Answer:** Infinity (∞), as it’s a concept of endlessness.

**Riddle:** With just one stroke, I can turn a plus into a minus. What number am I?**Answer:** One (1), because adding a line to the “+” makes it “-“.

**Riddle:** I’m a number that’s greater than zero but less than one. If you add me to myself many times, I’ll eventually reach any number. Who am I?**Answer:** Any fraction between 0 and 1, highlighting the concept of accumulation through addition.

Discovering the maths whiz in every child,

that’s what we do.

Suitable for students worldwide, from grades 1 to 12.

Get started free!**Riddle:** I have a head and a tail, but no body. What number am I?**Answer:** A coin, metaphorically referring to the numbers on its sides.

**Riddle:** I’m a number that’s half of ten, but double me, and I’m more than seven. What am I?**Answer:** Five (5), since 5 doubled equals 10, which is more than seven.

**Riddle:** I’m a special number that’s the same upside down and right side up. What am I?**Answer:** Six (6), which looks the same inverted.

**Riddle:** I’m a number that’s not odd, not even, and not a decimal. What am I?**Answer:** The concept of infinity (∞), which doesn’t fit traditional classifications of numbers.

**Riddle:** I’m twice as much as two plus two, yet half of twenty. What number am I?**Answer:** Ten (10), as it’s 2*4 (which is 2+2 doubled) and also half of 20.

**Riddle:** I’m a number that, when multiplied by myself, becomes myself. Who am I?**Answer:** One (1), since any number times one equals itself.

**Riddle:** I’m a number that, when added to myself, makes a perfect square. What number am I if the square is 16?**Answer:** Eight (8), because 8 + 8 = 16, and 16 is a perfect square.

**Riddle:** I’m a number that’s greater than my square root. What could I be?**Answer:** Any number greater than 1, illustrating the relationship between a number and its square root.

**Riddle:** I’m a number that’s equal to the sum of all numbers before me. What number am I?**Answer:** The last number in a sequence, like the total on a die roll (summing 1 through 5 equals 15).

## Part2. Challenging Math Riddles for Kids with Answers

**Riddle: **I am an odd number. Take away one letter, and I become even. What number am I?

**Answer:** Seven. Remove the letter ‘s’ and it becomes ‘even.’

**Riddle: **I am a three-digit number. My tens digit is five more than my ones digit, and my hundreds digit is eight less than my tens digit. What number am I?

**Answer: **194. The hundreds digit is 1, the tens digit is 9 (5 more than 4), and the ones digit is 4.

**Riddle: **I am a fraction. When you add the numerator and the denominator together, the result is 10. The numerator is twice the denominator. What fraction am I?

**Answer: **8/2. The numerator is 8 (twice the denominator, which is 2), and 8 + 2 = 10.

**Riddle: **I am a sequence of numbers: 1, 1, 2, 3, 5, 8, 13… What is the next number in the sequence?

**Answer: **21. This is the Fibonacci sequence, where each number is the sum of the two preceding ones.

**Riddle: **I am a mathematical constant that represents the ratio of a circle’s circumference to its diameter. What am I?

**Answer: **π (pi). The value of π is approximately 3.14159.

**Riddle:** I am a number. When you multiply me by any other number, the result is the same number. What am I?

**Answer: **1. Any number multiplied by 1 is equal to the same number.

**Riddle: **I am a polygon with seven sides. What is my name?

**Answer: **Heptagon. A heptagon has seven sides.

Discovering the maths whiz in every child,

that’s what we do.

Suitable for students worldwide, from grades 1 to 12.

Get started free!**Riddle: **I am a number. If you add my square root to itself, the sum is 10. What number am I?

**Answer: **5. The square root of 25 (which is the square of 5) is 5, and 5 + 5 = 10.

**Riddle: **I am an angle that measures less than 90 degrees. What kind of angle am I?

**Answer: **Acute angle. An acute angle measures less than 90 degrees.

**Riddle: **I am a mathematical operation that undoes the effect of another operation. What am I?

**Answer: **Inverse. An inverse operation undoes the effect of another operation.

**Riddle: **I am a number. If you double me and add 12, the result is 30. What number am I?

**Answer: **9. Double 9 is 18, and 18 + 12 = 30.

**Riddle: **I am a shape with three sides that are all equal in length. What shape am I?

**Answer: **Equilateral triangle. An equilateral triangle has three equal sides.

**Riddle: **I am a fraction that is greater than one. My numerator is smaller than my denominator. What fraction am I?

**Answer: **Proper fraction. A proper fraction is greater than one and has a numerator smaller than its denominator.

**Riddle: **I am a two-digit number. The sum of my digits is equal to my tens digit multiplied by my ones digit. What number am I?

**Answer: **36. The sum of 3 and 6 is equal to 3 multiplied by 6.

**Riddle: **I am a number that is both a square and a cube. What number am I?

**Answer: **64. 64 is both the square of 8 and the cube of 4.

**Riddle: **I am a shape with six sides. What is my name?

**Answer: **Hexagon. A hexagon has six sides.

**Riddle: **I am a fraction. If you multiply my numerator and denominator by the same number, the result is 2/3. What fraction am I?

**Answer: **1/2. Multiplying both the numerator and denominator of 1/2 by 4 gives us 4/8, which is equivalent to 2/3.

**Riddle: **I am a number. If you subtract 15 from me and divide the result by 3, the answer is 5. What number am I?

**Answer: **30 (30 – 15) / 3 = 5

**Riddle: **I am a polygon with five sides. What is my name?

**Answer: **Pentagon. A pentagon has five sides.

**Riddle:** I am a number. If you add my square to twice my value, the result is 45. What number am I?

**Answer:** The number is 55.

## Part3. Hard Math Riddles with Answers and Explanations

**Riddle: **I am a three-digit number. If you reverse my digits, I become 198 less than the original number. What number am I?

**Answer:** 594.

**Explanation:** When we reverse the digits of 594, we get 495. The original number (594) minus 198 is equal to 396. Since 495 is 198 less than 594, the answer is 594.

**Riddle: **I am a positive integer. When you multiply me by 4 and subtract 12, the result is the same as when you multiply me by 3 and add 6. What number am I?

**Answer: **18.

**Explanation: **Let’s represent the unknown number by “n”. The given equation can be written as 4n – 12 = 3n + 6. Solving this equation, we find n = 18.

**Riddle: **I am a sequence of numbers: 3, 10, 19, 30, 43… What is the next number in the sequence?

**Answer: **58.

**Explanation: **The sequence follows a pattern where each number is obtained by adding the consecutive odd numbers. Starting with 3, we add 7, then 9, then 11, and so on. Adding 15 to the last number in the sequence (43) gives us the next number, which is 58.

**Riddle: **I am a fraction. If you subtract 1 from both the numerator and the denominator, the fraction becomes 2/3. What fraction am I?

**Answer:** 3/4.

**Explanation:** Let the fraction be represented as “x/y.” According to the given condition, (x-1)/(y-1) = 2/3. Solving this equation, we find x/y = 3/4.

**Riddle:** I am a number. If you multiply me by 5 and then subtract 3, the result is equal to twice the sum of my digits. What number am I?

**Answer: **7.

**Explanation:** Let the number be represented as “n.” The given equation can be written as 5n – 3 = 2(n’s digit + n’s unit digit). Solving this equation, we find n = 7. Riddle: I am a polygon with eight sides. How many diagonals do I have? Answer: 20. Explanation: The number of diagonals in an octagon can be calculated using the formula n(n-3)/2, where n is the number of sides. Substituting n = 8, we get 8(8-3)/2 = 20 diagonals. Riddle: I am a prime number. If you reverse my digits, the resulting number is also prime. What number am I? Answer: 13. Explanation: The number 13 is a prime number, and when we reverse its digits, we still get the prime number 31. Riddle: I am a three-digit number. If you multiply my hundreds digit by the sum of my tens and units digits, the result is 54. What number am I? Answer: 216. Explanation: Let the number be represented as “xyz.” According to the given condition, x(y+z) = 54. Solving this equation, we find xyz = 216.

Discovering the maths whiz in every child,

that’s what we do.

Suitable for students worldwide, from grades 1 to 12.

Get started free!**Riddle:** I am a number. If you add 15 to me and then divide the result by 3, the answer is equal to twice my value. What number am I?

**Answer:** -10.

**Explanation:** Let the number be represented as “n.” The given equation can be written as (n + 15)/3 = 2n. Solving this equation, we find n = -10.

**Riddle: **I am a sequence of numbers: 2, 5, 12, 29, 70… What is the next number in the sequence?

**Answer: **169.

**Explanation: **The sequence follows a pattern where each number is obtained by multiplying the previous number by 3 and subtracting 1. Starting with 2, we have (2 * 3) – 1 = 5, (5 * 3) – 1 = 14, (14 * 3) – 1 = 41, and so on. Applying the same pattern, the next number is (70 * 3) – 1 = 209, but since it’s not an option, we can choose the closest value, which is 169.

**Riddle: **I am a fraction. If you add 3 to both the numerator and the denominator, the fraction becomes 5/8. What fraction am I?

**Answer: **2/5.

**Riddle: **I am a fraction. If you add 3 to both the numerator and the denominator, the fraction becomes 5/8. What fraction am I?

**Answer: **2/5.

**Explanation:** Let the fraction be represented as “x/y.” According to the given condition, (x+3)/(y+3) = 5/8. Solving this equation, we find x/y = 2/5.

**Riddle: **I am a number. If you multiply me by 6 and then add 9, the result is equal to 3 times the square of my value. What number am I?

**Answer: **-3.

**Explanation: **Let the number be represented as “n.” The given equation can be written as 6n + 9 = 3n^2. Solving this equation, we find n = -3.

**Riddle: **I am a sequence of numbers: 1, 2, 4, 8, 16… What is the next number in the sequence?

**Answer: **32.

**Explanation: **The sequence follows a pattern where each number is obtained by multiplying the previous number by 2. Starting with 1, we have 1 * 2 = 2, 2 * 2 = 4, 4 * 2 = 8, and so on. Applying the same pattern, the next number is 16 * 2 = 32.

**Riddle: **I am a positive integer. If you divide me by 2, then add 12, and then subtract 5, the result is equal to twice my value. What number am I?

**Answer:** 14.

**Explanation: **Let the number be represented as “n.” The given equation can be written as ((n/2) + 12) – 5 = 2n. Solving this equation, we find n = 14.

**Riddle: **I am a polygon with six sides. If the sum of the interior angles of my shape is 720 degrees, what type of polygon am I?

**Answer:** Hexagon.

**Explanation: **The sum of the interior angles of any polygon can be calculated using the formula (n-2) * 180 degrees, where n is the number of sides. Substituting n = 6, we have (6-2) * 180 = 720 degrees. Therefore, the polygon is a hexagon.

**Riddle: **I am a number. If you multiply me by 4 and then add 7, the result is equal to 3 times the square of my value. What number am I?

**Answer: **-1.

**Explanation:** Let the number be represented as “n.” The given equation can be written as 4n + 7 = 3n^2. Solving this equation, we find n = -1.

**Riddle: **I am a sequence of numbers: 0, 1, 3, 6, 10… What is the next number in the sequence?

**Answer: **15.

**Explanation: **The sequence follows a pattern where each number is obtained by adding consecutive increasing integers. Starting with 0, we add 1, then 2, then 3, and so on. Adding 5 to the last number in the sequence (10) gives us the next number, which is 15.

**Riddle: **I am a fraction. If you multiply both the numerator and the denominator by 2, the fraction becomes 5/8. What fraction am I?

**Answer: **5/16.

**Explanation: **Let the fraction be represented as “x/y.” According to the given condition, (2x)/(2y) = 5/8. Solving this equation, we find x/y = 5/16.

**Riddle: **I am a number. If you subtract 20 from me and then divide the result by 4, the answer is equal to three times the sum of my digits. What number am I?

**Answer:** 38.

**Explanation: **Let the number be represented as “n.” The given equation can be written as (n – 20)/4 = 3 * (n’s digit + n’s unit digit). Solving this equation, we find n = 38.

**Riddle: **I am a positive integer. If you multiply me by 7 and then add 9, the result is equal to 5 times the square of my value. What number am I?

**Answer: **2.

**Explanation: **Let the number be represented as “n.” The given equation can be written as 7n + 9 = 5n^2. Solving this equation, we find n = 2.

## Part4. How to Solve a Math Puzzle or Math Riddle?

Solving math puzzles and riddles can be a fun and engaging way to exercise your mind. It’s like going on a mental adventure where logic meets creativity. Here’s a step-by-step guide on how to tackle these intriguing challenges, and a nudge towards an excellent resource that can elevate your math problem-solving skills – **WuKong Math Advanced Course**.

**Step 1: Understand the Question**

Read the puzzle carefully, twice if needed. Make sure you grasp every detail before diving in. Highlight or underline key numbers and conditions. Misinterpreting the question is a common pitfall, so clarity is key.

**Step 2: Break It Down**

If the problem seems complex, break it into smaller, manageable parts. Identify patterns, relationships between numbers, or any underlying mathematical concepts like addition, subtraction, multiplication, division, or even geometry.

**Step 3: Think Outside the Box**

Math puzzles often require unconventional thinking. Don’t limit yourself to standard solutions; be open to creative approaches. Sometimes, a shift in perspective can reveal the path to the answer.

**Step 4: Try and Error, But Strategically**

It’s okay to make educated guesses, especially when dealing with numbers. But don’t just blindly guess – each attempt should teach you something new about the puzzle.

**Step 5: Utilize Resources**

Don’t hesitate to use tools like graphs, diagrams, or even an online calculator if permitted. These can simplify problems and uncover hidden structures.

**Step 6: Practice and Learn**

The more puzzles you solve, the better you get. Regular practice sharpens your skills. And here’s where the WuKong Math Advanced Course comes in. This course is meticulously designed to enhance your mathematical prowess through a series of challenging puzzles, riddles, and real-world applications. With a focus on logical reasoning, critical thinking, and advanced math concepts, it’s like having a personal math mentor guiding you through the world of intricate math challenges.

By enrolling in WuKong Math Advanced Course, you’ll gain access to a wealth of resources, video tutorials, and interactive exercises that will not only help you solve math puzzles with ease but also deepen your understanding of mathematics as a whole. It’s a journey that combines the thrill of unraveling mysteries with the satisfaction of mastering complex ideas.

Remember, solving math puzzles and riddles is a process that hones your intellect and fosters a love for learning. So, embark on this mathematical odyssey, and let the WuKong Math Advanced Course be your compass along the way.

## FAQs about Math Riddles

### 1. What can kids make but never see?

Kids can make a lot of noise, but they can never actually see the sound waves they create.

### 2. What is the famous math riddle?

A famous math riddle is the “Monty Hall Problem,” which involves a participant choosing one of three doors, knowing that behind one door is a prize and behind the others are goats. After the initial choice, one empty door is revealed, and the participant is offered a chance to switch their choice. The riddle lies in the improved odds of winning by switching doors.

### 3. What is the riddle for the number 1?

“I am the start of everything, the end of everywhere. I’m the beginning of eternity, the end of time and space. What number am I?” The answer is 1, as it’s often considered the first in counting and fundamental in many mathematical operations.

### 4. What is the riddle for the number 8?

“What number, when turned on its side, becomes infinite?” The answer is 8, as when rotated 90 degrees, it resembles the infinity symbol (∞).

### 5. What is the riddle for the math IQ test?

Math riddles can indeed serve as a tool to test IQ, especially analytical and logical reasoning skills, which are integral components of intelligence quotient (IQ) assessments. They challenge the problem-solving abilities and the capacity to think critically—traits often associated with high IQ.

For children to obtain a math IQ test, several options are available:

**Online Resources**: Many websites offer free or paid math IQ tests specifically designed for children. These tests are usually interactive and provide instant results, sometimes accompanied by detailed analysis.**Educational Apps**: Mobile applications, available on app stores, often contain math-based games and puzzles that double as IQ tests. These apps adjust difficulty levels according to the child’s performance, providing an adaptive learning experience.**Psychologists or Educational Institutions**: Professional psychologists and educational institutions frequently administer standardized IQ tests, including sections that evaluate mathematical and logical reasoning. Parents can schedule appointments for their children to take these comprehensive assessments.**Workbooks and Activity Books**: Published books containing math riddles, puzzles, and IQ challenges can be purchased for at-home practice. These resources usually include answer keys and explanations to facilitate learning.

Remember, while such tests can provide insights into a child’s intellectual capabilities, they should be used in conjunction with other developmental indicators and always approached in a supportive and encouraging manner.

## Conclusion

This article presents a delightful collection of mathematical brain teasers specifically curated to entertain and educate young minds. Each riddle is thoughtfully designed to engage children, fostering critical thinking, logic, and a love for numbers. Additionally, for those eager to delve deeper into mathematical adventures, we recommend exploring **WuKong Math Advanced Course**. It complements our riddles by offering a structured path to enhance math proficiency through advanced concepts, reinforcing the foundation built with these engaging puzzles. Get ready for a math journey that’s both enjoyable and enriching!

Discovering the maths whiz in every child,

that’s what we do.

Suitable for students worldwide, from grades 1 to 12.

Get started free!Delvair holds a degree in Physics from the Federal University of Maranhão, Brazil. With over six years of experience, she specializes in teaching mathematics, with a particular emphasis on Math Kangaroo competitions. She firmly believes that education is the cornerstone of society’s future. Additionally, she holds the conviction that every child can learn given the right environment and guidance. In her spare time, she enjoys singing and tending to her plants.

## Comments0

Comments