Mental Calculation: ideal main calculation app for your smartphone and smartwatch

Do you easily grab your calculator for simple calculations? Don’t worry, you’re not the only one. The Mental Calculation Math Tricks application may be the answer.
This application lets your brain crack again with arithmetic. You can consult different tutorials in the app with different tricks to get an even better understanding of arithmetic.
The tips are not only meant for students and youth, but also for adults who want to become better at performing arithmetic.
Link: https://www.droidapp.nl/apps/mental-calculation-hoofdreken-app-smartphone-smartwatch/