Soroban is an online game for practising with a virtual Japanese abacus. On the Soroban abacus, each column represents the ones, tens, hundreds, thousands and tens of thousands from right to left. The abacus is divided into two parts, with one ball at the top and four balls at the bottom. The top ball multiplies the value of the number position by 5. The virtual Japanese abacus allows you to learn how to represent a number with the abacus by practising moving the balls and observing the equivalent number. Click on try a challenge to play to represent a given number with the Soroban Japanese abacus in this online number game.