## Combining Powers of Ten - Visualizing Algebra

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If you said 9, excellent work. I've copied this part of the fraction over here.
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Working with bases of 10, I can use my exponent rules to figure out what the
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power should be. Here are multiplying bases, so we add the exponents. 5 plus
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negative 3 equals 2, and negative 4 plus negative 3 equals negative 7. Next I
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can subtract my exponent since I'm doing division of the bases. So 10 to the 2
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minus negative 7, or 10 to the 9th. This also makes sense because we know
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negative exponents wind up in the opposite position. So 10 to the negative 7th
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would wind up being 10 to the positive 7th in the numerator. 10 to the 2nd and
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10 to the 7th would be 10 to the 9th.
Title:
Combining Powers of Ten - Visualizing Algebra
Video Language:
English
Team:
Udacity
Project:
MA006 - Visualizing Algebra
Duration:
0:39
 Udacity Robot edited English subtitles for Combining Powers of Ten - Visualizing Algebra Cogi-Admin added a translation

# English subtitles

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