Are you hunting for fun and tricky math riddles to challenge your brain? You’ve probably searched everywhere, trying to find riddles that are just right not too easy, not too hard, and perfect for adults. Well, your search ends here! This article is packed with the best math riddles for adults, sorted into eight exciting categories.
Each one comes with clear answers and emojis to make it super fun. Get ready to solve, smile, and share these with your friends!
Number Puzzles ๐งฎ
Number puzzles are a great way to test your math skills. These riddles play with digits and patterns to make you think!
- I am a three-digit number. My tens digit is 5, and my ones digit is 8. I am divisible by 4. What am I?
Answer: 548 ๐ - What number is twice the sum of its digits?
Answer: 18 ๐ - I am a two-digit number. My digits add up to 9, and I am divisible by 3. What am I?
Answer: 36 ๐ - What number comes next in the sequence: 2, 4, 8, 16?
Answer: 32 ๐ - I am a number between 20 and 30. I am divisible by 4 and 6. What am I?
Answer: 24 ๐ - What is the smallest number that is divisible by 1, 2, 3, 4, and 5?
Answer: 60 ๐ - My digits are 7 and 2. I am a two-digit number greater than 50. What am I?
Answer: 72 ๐ - What number is equal to the product of its digits plus the sum of its digits?
Answer: 135 ๐ฅณ - I am a number. If you add 5 to me and then divide by 2, you get 10. What am I?
Answer: 15 ๐ - What is the sum of the first five odd numbers?
Answer: 25 ๐
Logic and Reasoning Riddles ๐ง
These riddles make you think step-by-step to find the answer. Theyโre like little brain games!
- If 3 apples cost 15 cents, how much do 5 apples cost?
Answer: 25 cents ๐ - A book costs $10 plus half its price. How much is it?
Answer: $20 ๐ - If you have 4 coins and each is worth twice the previous one, and they total $15, what are the coins?
Answer: $1, $2, $4, $8 ๐ - I have 3 boxes. One has 2 coins, one has 1 coin, and one is empty. If I pick a box and take a coin, whatโs the chance itโs the box with 2 coins?
Answer: 2/3 ๐ - If a train leaves at 2 p.m. and travels 60 mph, when does it reach a station 120 miles away?
Answer: 4 p.m. ๐ - You have 8 bags of gold coins, but one bag has fake coins. Using a scale twice, how do you find the fake bag?
Answer: Weigh 3 bags against 3. If equal, weigh 1 of the remaining 2 against a real coin. ๐ - If 5 cats catch 5 mice in 5 minutes, how long for 1 cat to catch 1 mouse?
Answer: 5 minutes ๐ - A farmer has 17 sheep, and all but 9 run away. How many are left?
Answer: 9 ๐ฅณ - If you buy a rooster to lay eggs, how many eggs will you get?
Answer: 0, roosters donโt lay eggs ๐ - What is half of two plus two?
Answer: 3 ๐
Geometry Riddles ๐
Geometry riddles are all about shapes, sizes, and spaces. Theyโre fun and make you picture the problem!
- A square has a side of 4. What is its area?
Answer: 16 ๐ - A circle has a radius of 3. What is its circumference? (Use ฯ = 3.14)
Answer: 18.84 ๐ - A rectangle has a length of 6 and an area of 30. What is its width?
Answer: 5 ๐ - A triangle has a base of 10 and an area of 20. What is its height?
Answer: 4 ๐ - If a cube has a volume of 27, what is the length of one side?
Answer: 3 ๐ - A room is 12 feet by 10 feet. How many square tiles, each 2 feet by 2 feet, cover the floor?
Answer: 30 ๐ - A pizza is cut into 8 equal slices. If the pizza has a diameter of 16 inches, what is the area of one slice? (Use ฯ = 3.14)
Answer: 25.12 square inches ๐ - A ladder is 10 feet long and reaches 8 feet up a wall. How far is the ladderโs base from the wall?
Answer: 6 feet ๐ฅณ - A square and a circle have the same area. If the squareโs side is 4, what is the circleโs radius? (Use ฯ = 3.14)
Answer: 2.26 ๐ - A rectangleโs perimeter is 20, and its length is twice its width. What is its area?
Answer: 24 ๐
Sequence and Pattern Riddles ๐ข
These riddles are about spotting the next number or shape in a sequence. Theyโre like solving a puzzle!
- What is the next number in 1, 3, 6, 10?
Answer: 15 ๐ - Find the next number in 5, 10, 20, 40.
Answer: 80 ๐ - What comes next in 2, 6, 12, 20?
Answer: 30 ๐ - The sequence is 1, 4, 9, 16. What is the 5th term?
Answer: 25 ๐ - What is the next number in 3, 9, 27, 81?
Answer: 243 ๐ - Find the next number in 7, 14, 28, 56.
Answer: 112 ๐ - What comes next in 1, 2, 4, 7, 11?
Answer: 16 ๐ - The sequence is 10, 8, 6, 4. What is the next number?
Answer: 2 ๐ฅณ - What is the next number in 2, 5, 11, 23?
Answer: 47 ๐ - Find the next number in 4, 12, 36, 108.
Answer: 324 ๐
Word Problem Riddles ๐
Word problems turn math into a story. Youโll need to read carefully to solve these!
- A shirt costs $12 after a 20% discount. What was the original price?
Answer: $15 ๐ - If you save $5 every week, how many weeks to save $100?
Answer: 20 weeks ๐ - A car travels 240 miles in 4 hours. What is its speed?
Answer: 60 mph ๐ - You buy 3 books for $9 each and get a $6 discount. What is the total cost?
Answer: $21 ๐ - A bakery sells 12 cupcakes for $24. How much for 5 cupcakes?
Answer: $10 ๐ - If 2 workers build a wall in 6 days, how long for 3 workers?
Answer: 4 days ๐ - A tank fills in 10 minutes with one pipe. How long with two pipes?
Answer: 5 minutes ๐ - You spend $50 and have $30 left. How much did you have before?
Answer: $80 ๐ฅณ - A movie ticket is $8 for kids and $12 for adults. If 5 tickets cost $48, how many are for kids?
Answer: 3 ๐ - If 4 friends share $16 equally, how much does each get?
Answer: $4 ๐
Probability Riddles ๐ฒ
Probability riddles are about chance and odds. Theyโre exciting because they test your thinking!
- You roll a die. What is the chance of getting a 4?
Answer: 1/6 ๐ - A bag has 3 red and 2 blue marbles. What is the chance of picking a red one?
Answer: 3/5 ๐ - You flip two coins. What is the chance of getting two heads?
Answer: 1/4 ๐ - A deck has 52 cards. What is the chance of drawing a heart?
Answer: 1/4 ๐ - You pick a number from 1 to 10. What is the chance itโs even?
Answer: 1/2 ๐ - A box has 4 chocolates, 1 is dark. What is the chance of picking the dark one?
Answer: 1/4 ๐ - You roll two dice. What is the chance their sum is 7?
Answer: 1/6 ๐ - A jar has 10 candies: 6 lemon, 4 cherry. What is the chance of not picking lemon?
Answer: 2/5 ๐ฅณ - You spin a wheel with 8 equal sections. What is the chance of landing on section 1?
Answer: 1/8 ๐ - A bag has 5 balls: 2 green, 3 red. You pick 2 without replacing. What is the chance both are green?
Answer: 1/10 ๐
Time and Distance Riddles โฐ
These riddles are about clocks, speed, and travel. They make you think about time and space!
- A clock shows 3:00. What time is it after 40 minutes?
Answer: 3:40 ๐ - A car travels 100 miles at 50 mph. How long does it take?
Answer: 2 hours ๐ - Two trains leave at 9 a.m., one at 60 mph, the other at 80 mph in opposite directions. When are they 280 miles apart?
Answer: 11 a.m. ๐ - You walk 3 miles in 1 hour. How long to walk 9 miles?
Answer: 3 hours ๐ - A plane flies 600 miles in 2 hours. What is its speed?
Answer: 300 mph ๐ - If itโs 10 a.m. now, what time was it 90 minutes ago?
Answer: 8:30 a.m. ๐ - A boat travels 20 miles upstream in 2 hours and downstream in 1 hour. What is the riverโs current speed?
Answer: 5 mph ๐ - You bike 12 miles at 6 mph. How long does it take?
Answer: 2 hours ๐ฅณ - A runner finishes a 400-meter race in 80 seconds. What is their speed in meters per second?
Answer: 5 m/s ๐ - Two cars start 100 miles apart and drive toward each other at 25 mph each. When do they meet?
Answer: 2 hours ๐
Money and Shopping Riddles ๐ฐ
Money riddles are about buying, selling, and saving. Theyโre fun and practical!
- A toy costs $15 after a 25% discount. What was the original price?
Answer: $20 ๐ - You buy 2 pens for $3 each and get $1 off. What is the total cost?
Answer: $5 ๐ - A store has a buy 2, get 1 free deal. If one shirt is $10, how much for 3 shirts?
Answer: $20 ๐ - You have $50 and spend 40%. How much is left?
Answer: $30 ๐ - A meal costs $24 with a 20% tip. What is the total cost?
Answer: $28.80 ๐ - If 3 candies cost $6, how much for 5 candies?
Answer: $10 ๐ - A jacket is $80 after a 20% discount. What was the original price?
Answer: $100 ๐ - You save $2 every day. How many days to save $20?
Answer: 10 days ๐ฅณ - A book is $12, and you get 2 for the price of 1. How much for 2 books?
Answer: $12 ๐ - You spend $18 and have $7 left. How much did you have before?
Answer: $25 ๐
Conclusion
This article is your one-stop place for the best math riddles for adults! With 80 riddles across eight fun categories, youโve got plenty to challenge your brain and share with friends.
Each riddle is simple enough for anyone to understand, but tricky enough to make you think. Whether you love numbers, shapes, or stories, these riddles will keep you entertained. So, grab a pencil, start solving, and have fun!
