Add:
-107+163
Since the given numbers are of un-like signs (+and-), let's subtract the absolute values directly and give the sign of the largest absolute valued number for the result.
Here, the sign of largest absolute value 163 is +
So,
-107+163+44
Hence, the value is 44
Add:3145887549873928+80394669___________
-480-238
-1083-3974
-4032+3294
-2811+1309