Elementary Math Puzzles

#11 - Find the angle of a triangle

In the image below, can you find the the value of an angle(y)

#12 - Funny Answer to This Riddle

Right now Mum is 21 years older then her child In 6 years her child will be 5 times younger than she. Where is daddy?

#13 - November Maths Puzzle

The Puzzle: A girl, a boy, and a dog start walking down a road.

They start at the same time, from the same point, in the same direction.

The boy walks at 5 km/h, the girl at 6 km/h.

The dog runs from boy to girl and back again with a constant speed of 10 km/h. The dog does not slow down on the turn.
How far does the dog travel in 1 hour?

#14 - Maths Joke Puzzle

If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?

#15 - Easy math puzzle

I am the owner of a birds store. If I put in one bird per cage, I have one bird too many. If I put in two bird per cage, I have one cage too many. How many cages and birds do I have?

#16 - Tricky Maths Question

What do you get if you add 2 to 200 four times?

#17 - Marbles Puzzle

There is a box full of marbles,
all but two are blue,
all but two are green,
and all but two are red.

How many marbles are in the box ?

#18 - Trick Maths Riddle

I have a role of cloth 1km long.
I have a machine which cuts this role into pieces of 10 meter long cloth.

How long would it take for the machine to cut the roll if each cut took 4 secs ?

#19 - Logical Number Problem

According to number theory of mathematics , a perfect number is a positive integer that is equal to the sum of its positive divisors excluding the number itself.
For example :
6 => 1+2+3
28 =>1+2+4+7+14

I know one more number that is a perfect number and contains not more than 2 digits (i.e 496 won't be consider as it contains 3 digits).

Find the number ?

#20 - Short Math Riddle

Can you convert number zero(0) into a positive number using just one mathematical operator ?