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Find the value of each expression below. Change any subtraction problem to an equivalent addition problem. Draw a diagram with and tiles to justify your answer.  

  1. The equivalent addition problem is .

  1. The drawing should look something like this:

  1. Remember to draw your diagram.

  1. For the expression , draw three pairs of zeros ( & ). Then add 5 negatives.  Then take out 7 negatives. Remove any zeros.  What is left?