Math Riddles
How many times can you subtract the number 5 from 25?
Once - after that you're subtracting from twenty.
There are 2 ducks in front of 2 other ducks. There are 2 ducks behind 2 other ducks. There are 2 ducks beside 2 other ducks. How many ducks are there?
Four, in a square formation.
This five letter word becomes shorter when you add two letters to it. What is the word?
Short.
I am the first on earth, the second in heaven. I appear twice in a week, though you can only see me once in a year. What am I?
The letter E.
If it took 6 people 9 hours to build a barn, how long would it take 12 people to build the same barn?
None - the barn is already built!
When my father was 31, I was 8. Now he is twice as old as me. How old are we?
He is 46, I am 23.
(The difference between 31 and 8 is 23.)
There are ten fish in a tank. Two drown, four swim away, three die. How many fish are in the tank?
Ten.
You walk into a room and see a bed. On the bed there are two dogs, four cats, a giraffe, five cows, and a duck. There are also three chickens flying above the bed. How many feet are on the floor?
Four.
Many have heard me, but no one has seen me. I will not speak unless spoken to. What am I?
An echo.
Some months have 30 days, some have 31. What month has 28 days?
All of them!
I am an odd number. Take away one letter and I become even. What number am I?
Seven.
I have no wings, but I can fly. I don't have eyes, but I will cry. What am I?
A cloud.
What can you hold in your right hand, but not your left?
Your left hand.
I never ask questions, but I get answered. What am I?
A doorbell.
What weighs more - a ton of bricks or a ton of feathers?
Neither - they both weigh a ton!
Emma was running a 5-mile race. At the end of the race, Emma sprinted past Chloe, who was in second place. Why didn't Emma win the race?
She was in second place - she didn't pass the first place runner.
Where do turkeys go to dance?
The Butter Ball.
What has six faces, but wears no makeup? And 21 eyes, but cannot see?
A Dice.
I have hands, but cannot clap. What am I?
A clock.
What is at the end of a rainbow?
The letter W.
What has a foot on each side, and one in the middle?
A yardstick.
What has a mouth, but cannot eat; and has a bank, but cannot put money in it?
A river.
Before Mt. Everest was discovered, what was the tallest mountain on Earth?
Mt. Everest.
The more of me there is, the less you see. What am I?
I'm full of holes, but I can hold water without leaking. What am I?
A sponge.