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Station  LWild Exploration

Here are some “big question” ideas to explore.
Have fun!

IS THERE ANOTHER WAY TO INTERPRET THE DOTS-AND-BOXES ANSWERS?

When Sunil saw

he wrote on his paper the following lines:

He then said that the answer has to be $165$.

a) Can you explain his reasoning?

b) What would Sunil likely write as an answer for the operation $7109 - 3384$?