Significant Figures in Calculations:
In Order to Correct the Number of Significant Figures in a Calculation:
1.). First, you would, Add all the digits:
(Example: 1405.2 + 9.77 + 4.32 = 1419.29)
2.). Then, You would Round the final value to the Least Number of Significant Figures.
(In Example, it would look like this:
1420).
Therefore, The least number of significant figures in the Example, is 3.
(However, In the Example, the number 1420,) The "0" isn't a significant figure.
Hope that helps!!!! : )
You didn't write the significant numbers in, So, I just gave you an Example, of how would actually solve Significant Figures Calculation!
