Directions

Look carefully at the subtraction problems below. You are to replace each letter with a number which will make each problem correct. Break the code used to write each problem.

1.           A B C B

            -D E A C

    E A D D                        

2.           R S T

            -  R U

 R R R

3.       A B A B

          -C C D

            B A C

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