This wooden Add and Subtract Box features brightly coloured individual wooden tiles, with a combination of addition and subtraction sums from numbers 19. Introduce numbers at an early age lots of simple sums can be worked out and with repeated use, basic numeracy will become second nature! Answers can be found on the back of each tile. Once playtime is over, all of the pieces can be stored in the practical wooden tray with sliding lid, making this educational toy a great travel companion. Helps to develop dexterity and concentration. Made from high quality, responsibly sourced materials. Consists of 81 play pieces.