You'll Teach YourselfAbacus Mental Arithmetic !

Contents of Ebooks

Volume 1. Introduction

The first volume introduces abacus/soroban explaining its parts and their functions, its positioning, hand and finger use. It also explains the concept of "writing" and "erasing" numbers, digit places, values and manipulation of beads and specific use of fingers in moving beads.

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Use of Fingers in Moving Beads

Learning to use abacus/soroban to make calculations isn't hard at all. It has a simple systematic of bead and place values. However, in order to develop fast mental calculation skills, you need to learn the system of moving the beads with certain fingers or finger combinations while writing numbers on the abacus or erasing them from the abacus. Soroban set shows very clearly how and which fingers to use while moving the beads through animated demonstrations as follows.

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Write 1 Replay

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Erase 1 Replay



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Volume 2, 3, 4. Addition

These volumes present the magic Menar formulas for addition with specific finger movements that make abacus calculation very easy and paves the way for mental calculation skills through practice with these formulas.
The exercise platform of the volumes provides graded practice from simple to advanced with exercises in unlimited quantities.

Volume 5, 6, 7. Subtraction

You will be impressed to find out that the magic Menar formulas in subtraction are the same as in addition, except that the minus sign turns to plus and the plus sign becomes minus in subtraction.
The exercise platform of the volumes provides graded practice from simple to advanced with exercises in unlimited quantities.

Volume 8. Multiplication

Learners are surprised to find out that Menar technique makes multiplication so simple and so practical with speed and accuracy in solving multiplication problems.
The exercise platform of this volume provides graded practice from simple to advanced with exercises in unlimited quantities.

Volume 9. Division.

This volume presents the magic Menar technique for division which leads to hundred percent accuracy in finding the result.
The exercise platform of this volume provides graded practice from simple to advanced with exercises in unlimited quantities.