Solutions
We know that Sam drew sticks and circles to solve this problem. Lets see how he added. Lets use sticks to represent 47 and circles to represent 33.
|||| |||| |||| |||| |||| |||| |||| |||| |||| |||| |||| ||| = 47 sticks
ooooooooooooooooooooooooooooooooo = 33 circles
47 sticks + 33 circles = 80
