How to use iSoroban

Let's see how to do "12+36=48".

iSoroban First, place 12 on iSoroban.
iSoroban Then 3 beads to the 1 on the 10s column.
iSoroban Then add 6 to the 2 on the 1s column.
Now you see 48 on your iSoroban.

iSoroban main | Overview | Addition | Subtraction | Multipliction | Division

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