This video provides examples of easy, single-digit addition with the abacus, including what to do when there are no more beads left on the bottom. Part 3 (final) of a series.

This video provides examples of easy, single-digit addition with the abacus, including what to do when there are no more beads left on the bottom. Part 2 of a series.

This video provides examples of easy, single-digit addition with the abacus, including what to do when there are no more beads left on the bottom. Part 1 of a series.

A great practice for training your fingers to manipulate the abacus beads is to add the counting numbers from 1 to 100. (This exercise is also good practice for getting used to adding all different combinations of numbers that you might encounter.) It is…

Here is a simple yet effective finger exercise for the soroban, suitable as a warm-up exercise. Try to do this exercise as quickly as possible, without sacrificing accuracy. Daily practice will help you to develop speed, agility, and accuracy in your aba…

In this video I give an extended example of adding and subtracting with the soroban. Alternating back and forth between addition and subtraction is a good exercise for reinforcing the techniques used in each operation - you really have to keep track of wh…

A quick example illustrating adding 3 four-digit numbers using the soroban. This example also shows how to manipulate the beads when all the beads in the column immediately to the left of your working column are "full" (i.e., addition with regrouping/carr…

How to use the process of completing the square to solve a quadratic equation.

How to manipulate the beads to perform multiplication using the soroban (Japanese abacus).

How to perform left-to-right multiplication, necessary for multiplying using the soroban (Japanese abacus).

How to perform subtraction using a soroban (Japanese abacus).

How to perform addition using a soroban (Japanese abacus).