Mathematical
Large Number Cards - 1 - 9000 Wood, displayed in an open box. Materials: Boxed large digital card sets (green numbers 1-9, 10-90 of the blue numbers, red numbers 100-900, green number 1000-9000 1 each). With dimensions of 5.5 * 7, 11 * 7, 16.5 * 7, 22 * 7cm, High-grade imported wood (beech), safety and environmental protection paint, surface treatment.