Abstract: A lottery checking template having a bottom panel and a top panel joined at an integrally formed fold line. The bottom panel has printed indicia thereon of an arrangement of the lottery numbers that are playable in the lottery game corresponding to the arrangement of numbers on a lottery betting slip. The top panel has a transparent window portion overlying the indicia of the lottery numbers playable when the bottom and top panels are folded together in superposed relation. Accordingly, the announced winning lottery numbers may be removably marked on the transparent window portion of the top panel. A lottery ticket betting slip may be inserted into the template and the numbers marked thereon compared to the marked winning numbers. The top and bottom panels of the template may include opposing lengthwise extending ridges adjacent the fold line defining an abutment for engaging the lower edge of the lottery ticket betting slip to prevent pinching at the fold line.