Fill in the grid so that every row, every column, and every 3 x 3 box contains the digits 1 through 9. There are 6 boxes with a plus or minus sign where the sum or difference of the number formed by the first two rows is equal to the number formed in the third row of the same box.

Fill in the grid so that every row, every column, and every 3 x 3 box contains the digits 1 through 9. There are 6 boxes with a plus or minus sign where the sum or difference of the number formed by the first two rows is equal to the number formed in the third row of the same box.

Fill in the grid so that every row, every column, and every 3 x 3 box contains the digits 1 through 9. Additional the rows form 9 correct arithmetic expressions reading from left to right.

Fill in the grid so that every row, every column, and every 3 x 3 box contains the digits 1 through 9. Additional the rows form 9 correct arithmetic expressions reading from left to right.

Fill in the grid so that every row, every column, and every 3 x 3 box contains the digits 1 through 9. Additional the rows form 9 correct arithmetic expressions reading from left to right.

Fill in the grid so that every row, every column, and every 3 x 3 box contains the digits 1 through 9. Additional the rows form 9 correct arithmetic expressions reading from left to right.

Fill in the grid so that every row, every column, and every 3 x 3 box contains the digits 1 through 9. Additional the rows form 9 correct arithmetic expressions reading from left to right.

Fill in the grid so that every row, every column, and every 3 x 3 box contains the digits 1 through 9. Additional the rows form 9 correct arithmetic expressions reading from left to right.

Fill in the grid so that every row, every column, and every 3 x 3 box contains the digits 1 through 9. Additional the rows form 9 correct arithmetic expressions reading from left to right.

Fill in the grid so that every row, every column, and every 3 x 3 box contains the digits 1 through 9. Additional the rows form 9 correct arithmetic expressions reading from left to right.
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