Math Riddles for Kids

Each number after the first two is the sum of the two before it: 1, 1, 2, 3, 5, 8. What comes next?

13.

Today is Monday. What day will it be three days from today?

"Three days from today" means you start counting with tomorrow.

Thursday.

I am a whole number greater than 20 and less than 30. I divide exactly by both 3 and 4. What am I?

24.

I am a solid shape with exactly six faces, all squares. What am I?

A cube.

With one straight cut, snip a small triangle off one corner of a square. The cut crosses the two sides that meet at that corner. How many corners does the bigger piece have now?

The cut crosses each of the two sides partway along, not through another corner, and only the bigger piece's corners are counted.

Five.

A snail climbs 3 meters each day and slips 2 meters each night. Starting at the bottom, on which day does it first reach the top of a 10-meter wall?

The snail starts at the bottom in the morning, climbs 3 meters every day and slips 2 meters every night. Once it reaches the top, it stops and does not slip.

Day eight. It reaches the top that day, so it never slips back down.

A bat and a ball cost $1.10 altogether. The bat costs $1 more than the ball. What does the ball cost?

The bat and the ball are the only two things, and the prices are in whole cents.

Five cents. The bat costs $1.05.

In a three-digit number, the tens digit is two more than the ones digit. The hundreds digit is one less than the tens digit. The digits add to 12. What is the number?

453.

A pen holds only chickens and rabbits. There are 20 heads and 56 legs. How many rabbits are there?

Every chicken has 2 legs, every rabbit has 4 legs, and each animal has one head.

Eight rabbits and twelve chickens.