Math Riddles with Answers

Use the numbers 2, 3, 4 and 5 and the symbols + and = to make a true equation.

Three people check into a room. The bill is $30. They split it 3 ways. Later on the hotel realizes they should have charged $25 so...

If it takes 5 machines 5 minutes to make 5 widgets, how long would it take 100 machines to make 100 widgets?

A bat and a ball cost $1.10. The bat costs one dollar more than the ball. How much does the ball cost?

An athlete is able to jump FOREVER. However, every time that she jumps she gets a bit more tired, and every jump goes 1/2 as far a...

A person picks up cigarette butts from the ground and can make a cigarette with 4 butts. If he finds 16 cigarette butts, how many...

A child playing on the beach had 6-1/6 sand piles in one place and 3-1/3 in another. If he put them together, how many sand piles...

When is 1500 plus 20 and 1600 minus 40 the same thing?

In a certain country ½ of 5 = 3. If the same proportion holds, what is the value of 1/3 of 10 ?

If you toss a coin 10 times and it lands heads up every time, what are the chances it will land heads up if you toss it again?

What 3 positive numbers give the same result when multiplied and added together?

How can you add eight 8's to get the number 1,000?

What number do you get when you multiply all of the numbers on a telephone's number pad?

There is a chain nailed to the wall. The chain is 10 feet long and the centre of the chain dips down 5 feet from where each side o...

How can you make the following true by changing a single line? 5+5+5=550

If 1+9+8=1, what is 2+8+9?

A basket contains 5 apples. Do you know how to divide them among 5 kids so that each one has an apple and one apple stays in the b...

There are two planes. One is going from New York to London at a speed of 600 MPH. The other is travelling from London to New York...

Mr. Smith has 4 daughters. Each of his daughters has a brother. How many children does Mr. Smith have?