When you round a 3-digit decimal to one decimal place, you get 3.5. Find the sum of the largest and smallest of these decimal numbers, including the decimal point.
3.54 3.45 [OP_ADD]
var_a = 3.54
var_b = 3.45
var_c = var_a + var_b
print('{:.2f}'.format(round(var_c+1e-10,2)))