Abacus/Manual/Expert use

From Wikibooks
< Abacus‎ | Manual
Jump to navigation Jump to search

The Expert use of a culculator requires high practice and much depth in the mathematical field. To be very good at the math you need to know how to do the math first then practice the same principle by adding, subtracting, multipling, and dividing. All math does it so it might not be easy but you need to practice.