I don't know much about core math, but what are is the "context" the parents are missing? It seems to me that the homework is going to pretty hard to solve if i

I don't know much about core math, but what are is the "context" the parents are missing? It seems to me that the homework is going to pretty hard to solve if it doesn't contain the complete "context." Or is he referring to some terminology that the parents probably don't know? Why is this context missing, or not available to the parents, if nothing else via the text book or handouts? And how many different ways is there to add two numbers?