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Finger Movements
Hold the abacus on your left hand using your Forefinger and Thumb.
Use your Right hand Forefinger and Thumb to move beads up and down.
To move the beads up in the lower part use your thumb.
To move the beads down in the lower part use your Forefinger.
To move the beads up in the Upper part use your thumb.
To move the beads down in the Upper part use your Forefinger.