How to Add and Subtract with Significant Numbers

We just finished a video on what significant figures are and how to count them. But what good is that, unless you can do some actual addition and subtraction with them. The important point to remember is that the result is only as good as the initial measurement. If you have an unprecise measurement somewhere in your calculation, no amount of addition or subtraction will change that fact. Kind of like how a chain is only as good as its weakest link. So when you add or subtract with significant figures, you ll have to make sure that your final calculation doesn't misrepresent the accurate of your initial measurements. As for how to multiply and divide with significant figures, stay tunes and find out.
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