How do you add sig figs?
72+12+96=180 or 180.0
I think you extend to the most number of decimals a number in the expression goes to, like12.54+3.0000 = 15.5400or32.75900+5 = 37.75900or8000+34 = 8034but8000.+34 = 8034.This is my understanding but don't quote me on it i can't guarantee this is correct
Just add the numbers, and the number of sig figs must be the same as the lowest number. All of the numbers had two sig figs so the answer must. I believe it is 180 (zero doesn't count)