how abacus is used for calculation ?

Abacus is a simple tool. It is made up of wooden frame with vertical rods, 5 beads in each rod separated by a bar horizontally in between 4th and 1st bead. We will look at the abacus calculative method here. Each bead has got value. The beads are moved up and down for calculation purpose and 34 formulas are used for calculations which are known as CALCULATION TRICKS.

Certain procedures are to be followed for using the abacus. First and foremost thing is abacus should be placed on a smooth flat surface. The upper one bead and lower 4 beads should be moved towards the frame and should not touch the in between bar. The value of the abacus starts once beads are moved towards the bar. Calculations are done by moving the beads up and down using the formulas.

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