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Practice basic math operations with integers

In the game of bingo, the objective is to fill five cells in a grid in any direction. The middle cell is usually a giveaway ("free space"). In this exercise, the answers to a set of math problems need to be matched to cells in a bingo sheet. As in the real game, not all answers will be in the grid, and not all grid cells will have a matching answer. But there will be exactly one game-winning series on the board.