Math Is Fun Forum

Churchill:How many Italian you captured?
Commander:Mmm......About 20 acres soldiers and 5 acres officers.

What Italy's national flag means?
Green:Delicious food
Red:Nice wine
Blue:Loyalty in WW2

What if I told you:
You will become rich and happy when you subscribe me

Notice:
1.It's forbidden to use South Korea's stationery.
2.Just ignored it if the teacher is watching you.
3.If the teacher sighed after watched you,please ignored rule 2 and check your answer.

I.Choose the right choice.
1.The greatest leader general Kim invented a symbol:

,
and

.

(  ).
A.45 B.11 C.110 D.1145141919810
2.The greatest leader general Kim invented a kind of operate:@,and

,
   1@10 is (  ):
A.123 B.55 C.10 D.1

II.Just

it.
Ethan is walking on the street.Suddenly,a man lay down and said:"You hit me!Give me 100000$ or I'll call the police!"
But then the man said:If you can solve this,you can leave.
Then the man give him a piece of paper.
Ethan read the paper:
"f(x) is x^x,try to calculate:f'(x)"
Can you help Ethan?

III.
Ethan want to help general Kim.
General Kim said:"위대하다우리 조국"
The examination is over!

How to solve this:

In a kindergarten,it's time for children to sleep.
Teacher:"Who already fell asleep?Raise your hand to prove it!"

Life isn't always smooth sailing.But why?
Life just like electrocardiogram,and it goes up and down.
But if it become a straight line......

The domain of our life:[0,x]
x is hard to reach over 130
But

can be

x is your age,yourlife(x) is what you do.

A scientist want to update the hotel.
Guess what he do.

guests get off the bus.
They want to stay in the hotel.

guests come,the hotel seems full.
But then the scientist pick two room together,it become another room.
"If several room is full,pick some of them and it become another empty room.
In this way,we have

room.
But it more than,or less than,or just enough?

Principal:"In the last year,the first-graders was responsible to clean the school.This year,the second-graders is responsible to clean the school."