Reddit reviews You Can Do Math: Scientific Notation, Engineering Notation and Standard Form

As long as the base (the thing being raised to a power) is the same

• when multiplying add the exponents so a^5 a^3 = a^8 and 10^5 10^3 = 10^8
  
  
• when dividing subtract exponents so a^5 / a^3 = a^2 amd 10^5 / 10^3 = 10^2
  
  
• just do the other bits in the normal way - remember order of multiplication doesnt matter - and you can rearrange divisions
  
  So 3 10^5 2 10^7 = ( 3 2 ) ( 10^5 10^7 ) = 6 10^12
  
  And ( 8 10^5 ) / ( 2 10^7 ) = ( 8 / 2 ) ( 10^5 / 10^7 ) = 4 * 10^-2
  
  You may find my kindle book useful
  
  http://www.suniltanna.com/indices.php
  
  I've also done one on scientific notation (also known as standard form) and engineering notation, which isnt on my website yet but is on amazon (search my name "Sunil Tanna") or
  
  
  Book link:
  
  https://www.amazon.com/You-Can-Math-Scientific-Engineering-ebook/dp/B07QCR33R1/ref=mp_s_a_1_1?keywords=tanna+standard+form&qid=1565679187&s=gateway&sr=8-1