What is Scientific Notation? - [8-2-25]

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In this lesson, you will learn what scientific notation is and why it is used. We use scientific notation when we need to write very large or very small numbers down. By using a power of 10, we can move the decimal point and write any number we wish in a very compact way. So, if we need to express the distance across the galaxy or the size of an atom, we can express the number using scientific notation.

[@JosephFitzgibbon-jc9hi]

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[@marilara8978]

Thanks for being a good teacher, I was struggling with this!

[@shechshire]

Thanks you for teaching me scientific notation.

[@simpleman283]

That is so clear, I can see it.
I think I may never forget how to move the decimal.
That was a great little quick lesson.

[@Tola2022]

Thank you for the video. When explaining scientific notation, emphasize the importance of considering the number of significant digits. For instance, when expressing a number like 0.7, ensure it's represented as 7 × 10^-1, not 7.0 × 10^-1, as 0.7 contains only one significant digit.

[@tresajessygeorge210]

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[@faymila14]

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[@Dowski4]

I justice started this topic and it was a bit hard to understand at first buy this really helped making it easier to understand

[@nursenelly72]

Thank you so much. It’s quite simplified now.

[@SathyavathyRangasamy]

Superb teaching! But, how to get the hidden videos?

[@hemarajue2736]

123.25=1×10^2+2×10^1+1×10^0+2×10^-1+5×10^-2.
If we move to the left of decimal point, we get positive powers of 10. Similarly,if we move to the right of decimal point,we get negative powers of 10. This idea can be used in scientific notation,I think.

[@Acorn12345]

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[@sgk993]

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