The NFL Super Bowl squares sheets included in this download has a traditional squares sheet with the numbers entered on the axis, a traditional sheet without the numbers and a digital root square sheet. The digital root sheet gives a more equal chance of winning per square versus the traditional sheet.
Assign each team to an axis. Sell the squares or the blocks of squares to the participants. Once all the squares are sold then randomly assign the numbers 0 through 9 to the x-axis and the y-axis. After each quarter of the super bowl take the last digit of each teams score and find the intersecting square on the sheet. The owner of that square wins the money set aside for that quarter.
For a more equal chance for each square to win:
Use the Digital Root Squares Sheet to give each participant a more equal chance to win regardless of what square they draw. To use this sheet at the end of each quarter add the numbers together of each teams score then find the intersecting square for the winner. If the sum of a team’s score is two digits add those digits to get a singe digit. With this sheet you combine the 9 and 0 into one column/row. This results in a sheet with 81 squares as opposed to the traditional 100 squares. See the table below (taken from mathgoespop.com) for the distribution of the likeliness of a particular number to hit in a superbowl squares game.
The background numbers in the squares are to help participants communicate to you the squares they want to purchase. They look darker than they appear when you print the sheet. Alternatively I also have included the sheets without the background numbers.