A lottery tool that is a rectangular chip with a plurality of holes which may overlay a grid of numbers on a lottery gaming slip, allowing a user to select numbers for the lottery game. The lottery tool has a randomly generated pattern of 5-10 holes and is used by randomly placing the tool over the gaming slip, by direct placement, by dropping the tool onto the betting slip, or by spinning the tool on a hub. The user then fills in the lottery slip and repeats the process until a requisite amount of numbers are selected. Opposed edges of the tool are serrated to form teeth for use in removing coatings from hidden number lottery tickets.