how do I square

You can type it in like this: ( thing to be squared )^2

So, for example,

If you want to do 5 squared, type: (5)^2

"You square stuff by multiplying a number to itself" ~My mom, said in 2009.(Yes, my mom taught me some math!)

Example:

5^2 = 5 * 5 = 25.

2.5^2 = 2.5 * 2.5 = 6.25. <--- That is done by a calculator XD

11^2 = 11 * 11 = 121. :D