If you want to be the master in maths calculation then your search ends here . Here we will be providing you with ADDITION , SUBTRACTION , MULTIPLICATION , DIVISION..
You can set your own number of questions and at the end your report card will be displayed .
You can master your weak areas of calculation here . Like if you are weak in multiplication then practice multiplication ...and be the MASTER of your weakness.
You can challenge your friends , family and relatives .
A lot more feature is available for paid version of this app at just Rupees (10 INR)
Here is the link of paid app
https://play.google.com/store/apps/details?id=com.coolniks.mathschallange
Hope you will learn a lot.