They are items of knowledge that children should be able to easily recall. Some examples are the basic facts of addition and subtraction.
it is a odd number
There are a great many facts about the number 10 such as the fact that it is divisible by 5. It is also divisible by the number 2.
Some interesting facts about the number nineteen are you get to move out of the house and you are old enough to drive.
40 is an awesome number
it comes after the number 999999
1000 is not a prime number
There are number of websites that carry weird facts about bugs. One can find such facts on websites such as 'Sweet Facts', 'Bug Facts' and 'HubPages'.
72,1,2,3,8,9
9X10
1,2,4,7,8,16,28,56
NONE
it is the number 3 lol :)