Evaluate:

170-(-77) = 

    What is the sum of 27 and 38? 

    What is the sum of -25 and -19? 

   What is the sum of -15 and 32? 

What is the sum of 10 and 13? 

Evaluate:

30-(-28) =

     Evaluate:

-30-(-10) = 

   Evaluate:

10-8 =

   What is the sum of -50 and 28? 

     Evaluate:

-50-25 =