It has been proved that it is the best way to move the lower beads upward (addition) is thumb and lower beads downward (subtraction) is index finger. In moving the upper bead, only index finger should be used either in addition or subtraction. Right hand has to be used in the column worth of one unit). The second column worth ten units, index fingers is used for addition and subtraction of lower beads. Middle finger is used for addition and subtraction of upper bead. Incorrect method of fingering is not only awkward but also is conducive to mistakes.