Attivamente

Features Attivamente

We are no longer used to performing calculations in mind because we have numerous electronic tools suitable for this purpose which, very useful in everyday life, have actually made our brain lazy; but sometimes it happens not to have a calculator available and to have to mentally perform a calculation.
Training your mind is one of the key strategies for living well above your potential.
Calculation ability is not an innate gift, but, thanks to proper training, it can be developed.
Identify the correct arithmetic operation which results in the proposed number by selecting it from those proposed.