0.05^{2 }= ? How do i figure it out? Test tomorrow!

If you happen to know, off the top of your head, that sqrt(5) is 2.236 (3dp) then you could write 0.05 = 5/100 which, on taking the sqr root would be 2.236/10 = 0.2236.

.05^2

Note .05 = 5 / 100 = 1 / 20

So

.05^2 = (5/100)^2 = (1/20)^2 = (1/20) (1/20) = 1 / 400

Also

.05

___

.0025

These two answers are equivalent