Quick: What's 19 2...without your calculator?(361.) Squaring complex, two-digit numbers in your head isn't that difficult if you know a simple trick, according to the Secrets of Mental Math author ...

Renting or Buying Is Often Personal, but It’s Also Helpful to Look at the Numbers. ... big or small. Our calculator can’t take any of that into account, but you should.

See really large results in Calculator. Mac OS X Hints By Rob Griffiths, AUG 25, 2009 3:56 am PDT. Have you ever thought that the results display in the built-in OS X Calculator app was too small?

Back in 1980, Casio released a musical, game-playing calculator cleverly named the MG-880. Apparently, kids went wild for the thing, playing a mini Space Invaders-inspired game with just numbers ...