Montessori Introduction to Decimal Quantity with Tray Set consists of 1 Thousand Cube, 1 Hundred Square, 1 Ten Bar, 1 Unit Bead, and wooden tray. The purpose of this product is to understand the relative values of 1,10, 100 and a 1000. The child learns the names 100 and 1000 in association with the quantities. 100% Brand New