Carry out the following operations and express the answers with the appropriate number of significant numbers. (a) 14.3505 + 2.65

Video transcript

Hi everyone here. We have a problem asking us to use the correct number of significant figures while adding 39.391 and 21.3. So when we're adding or subtracting, we use the number with the least number of decimal places For significant figures. So in this case that is 21.3 With one decimal place. So now I'm going to rewrite our question here. 39 . Plus 21.3 And that equals 60 .691. And we need one decimal place. So we're going to look at our six here and we're going to look to the right of our six and if it is above five we're going to round up It is above five. It is a nine which makes our final answer 0.7. Thank you for watching. Bye.