Excalc is a powerful calculator which apart from doing mathematical calculationsm, enables the users to  draw 2D and 3D functions with OpenGL acceleration, create scripts, performing calculations on matrices and vectors, statistical functions, and much more.

Extcalc even offers text mode operation from terminal. According to me Extcalc is surely worth a try. To install excalc in ubuntu follow these steps :

1.Open Center Ubuntu software and type in the search box extcalc. Once you find it, click on the arrow.

2.There comes an option to install the program, click install.

3.Now goto accessories and extcalc and have fun  .