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Create your own addition tables, using positive and/or negative integers. Simply select the starting row and column numbers, and decide whether you want a blank table, one partially filled in, or one completely filled in. Then click the button!
Don't remember how addition tables work? The intersection square in the table holds the sum of the top column number and the left row number. Change the starting numbers if you want to focus on a particular range of numbers.
Partially filled tables are great for teaching basic addition math facts, and highlighting patterns.
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