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

Two fathers and two sons go fishing. Each of them catches one fish. So why do they bring home only three fish?

A set of natural numbers start with number .....

How can you add eight 8's to get the number 1,000? (only use addition)

Arrange four nines to make it equal to 100.

A grandfather, two fathers and two sons went to the movie theater together and everyone bought one movie ticket each. How many tickets did they buy in total?

What do you get when you divide 30 by 1/2 and add 10?

There are several books on a bookshelf. If one book is the 4th from the left and 6th from the right, how many books are on the shelf?

I am a three digit number. My tens digit is five more than my ones digit. My hundreds digit is eight less than my tens digit. What number am I?

0, 1, 2, 3, 4, ... are a set of ...... numbers.

I asked a girl how old she was. She said, "In 2 years I will be twice as old as I was 5 years ago." How old is she?

..., -3, -2, -1, 0, 1, 2, 3, ... are a set of ..... .

The ages of a father and son add up to 66. The father's age is the son's age reversed. How old could they be (there are 3 possible solutions)?