is a part of this memory game. -tap on a tile to turn it over and reveal a number. then tap on the second tile, trying to find the matching number. if the images match, the tiles are removed from the board. try to see how few taps you need to remove all of the tiles. 3.number puzzle (drag & drop) -select a number and tap, drag and drop it on its particular block. -if it is correct it will stay there or else it will go back to its original position. 4.number picture quiz -guess the correct spelling of the number shown. -there are four options to choose from. 