90 CARDSDivision equation cards with control (equation and control). Back keys allow children to work through problems independently. Cards have color code: ones are green, tens blue, hundreds red, and thousands green.Cards can be used with Montessori materials, such as golden beads, checker board, bead frames, stamp game OR SEPARATELY.INCLUDES:9 sets of different level (from tens to thousands).Each set contains 10 equations with keys on back of each card.90 unique equations of division, 24 page