This wooden Add and Subtract Box features brightly coloured individual wooden tiles, with a combination of addition and subtraction sums from numbers 1-9. Introduce numbers at an early age - lots of simple sums can be worked out and with repeated use, basic numeracy will become second nature! The practical wooden tray makes this toy a great travel companion and all of the pieces can be stored inside. Helps to develop dexterity and concentration. Made from high quality, responsibly sourced materials. Conforms to current European safety standards. Consists of 81 play pieces.