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10 cards from this deck
Data tables that organize information by two different categories or variables
To analyze relationships between groups using addition and subtraction
Horizontally
Vertically
Bottom right corner
All numbers in each column must add up to the column total
All numbers in each row must add up to the row total
Subtract known values from the total
Start with the grand total in the bottom right cell
Rows or columns with only one missing number
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