Math Riddles

riddles 1

100

A farmer has 15 sheep. All but 8 run away. How many sheep are left?

8

200

If two's company and three's a crowd, what are four and five?

Nine

300

I am an odd number. Take away one letter and I become even. What number am I?

Seven (remove the 's' and left with even)

400

I have 3 digits. My hundreds digit is 1 less than my tens digit. My ones digit is 2 less than my tens digit. The sum of my digits is 15. What number am I?

564

500

I am thinking of a number. If you multiply me by 4 and then subtract 12, you get 20. What number am I?

8

riddles 2

100

What has four sides, but is not a square or rectangle, and all four sides are equal?

Rhombus

200

I am a number. Double me and add 10, and you get 30. What number am I?

10

300

What is heavier: 100 pounds of feathers or 100 pounds of bricks?

they weigh the same

400

When can you add two to eleven and get one?

when talking about a clock, 11:00 + 2 hours is 1:00pm

500

There are 5 houses. Each house has 5 cats. Each cat chases 5 mice. How many houses are there?

5- only worry about the houses

riddles 3

100

Why was six afraid of seven?

because 7-ate-9

200

A rooster lays an egg on the roof of a barn. Which side does it roll down?

roosters don't lay eggs

300

I am a three-digit number. My digits add to 9. My hundreds digit is 3. My tens digit is twice my ones digit. What number could I be?

342

400

Two fathers and two sons go fishing. They catch 3 fish and each person gets one fish. How is this possible?

they are grandfather, father and son

500

Using only addition, how can you make 1,000 from eight 8s?

888+88+8+8+8= 1000

riddles 4

100

what month has 28 days

all of them

200

If you count by fives starting at 5, what is the 6th number you say?

30

300

I am a shape with 3 sides and 3 corners. What am I?

a triangle

400

Two numbers multiply to 48 and add to 14. What are they?

6 and 8

500

I am a number. My digits multiply to 18 and add to 9. What number could I be?

36 or 63

riddles 5

100

I am greater than 20 but less than 30. My digits add up to 7. What number could I be?

25

200

What comes once in a minute, twice in a moment, and never in a thousand years?

the letter M

300

I have three digits. My digits add to 12. My hundreds digit is 5. My tens digit is 3. What is my ones digit?

4

400

A rectangle's length is twice its width. If the width is 6, what is the perimeter?

36

500

What number am I?

• I am greater than 50.
• I am less than 70.
• I am divisible by 3 and 4.

60