Erin is squaring numbers.
she says that it is possible to get an answer that is smaller than the number she started with.
show that erin is correct.

If you square a number that is less than 1.

For example, say your number was 1/2
the square of 1/2 is (1/2)^2 = (1/2)(1/2) = 1/4

For example 1/2 or 0.5.
0,5 x 0.5 is 0.25.  because 1/2 of a 1/2 is 1/4 or 0.25 because that is the same like 0.5 and 1/2. 
It works the same way as 2 squared = 4 but with getting smaller because it is less than 1.