| 摘要 |
PURPOSE: A division game is provided to enable a user to do a division game in mental arithmetic by displaying division value in a square plate. CONSTITUTION: A division game comprises: a square plate which is divided into upper and lower parts by several lines to be distinguished; and ten beads which are placed in each line. In each bead, a number from zero to nine can be contained. The line of the upper part and lower part are distinguished by changing color, form, shape, pattern, material and the like of the line and bead.
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