Let me start off by saying I had a crappy calculator for an entire year of Algebra 1. Thank God i got this one. This calculator has everything you need for the office, class, home... The greatest feature it has is what you type in goes on top and you can delete or add some thing else you forgot. For example have you every done a HUGE math problem only to find out you pressed one digit wrong aand you have to do it all over again? Well not with this calculator. Also this may not bother most but I hate when other calculators say "/" for division. I like the old fasion line and 2 dots. There are also tons of options like cubed square roots and stuff like that. Last it is dual powered, solar and battery which most people wount care about, but if you're ever doing math in a dark dorm room you would. over all this is one of the best calculators in the market.