Final Project - Adding and Subtracting Scientific Notation

Final Project - Adding and Subtracting Scientific Notation

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  • Hey Tom! Let's talk about adding and subtracting with Scientific Notation. Here's an example: (3.4x102)+(4.57x103), it's very easy to solve using Scientific Notation!
  • Wait. What does that look like?
  • First of all, notice that on both sides of the problem our powers of ten do not have the same exponents. Remember, the number that we add or subtract to our exponent needs to be less than 10 but 1 or greater!
  • Okay, got it!
  • So if we use "LARS" (Left Add Right Subtract) we just add 1+2, then the decimal for 3.4 will move to the left. It will look like this: (.34x103)+(4.57x103).
  • Okay, so then what?
  • Moving on, our right side problem stays the same. Now that we have our equations, what do we do now?
  • We add them up!
  • Exactly, we take 0.34 and 4.57 and add them together to get 4.91
  • Oh...and that's it?
  • But we're not done yet! The final answer that we need to have is 4.91x103
  • Cool!
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