Friday, March 18, 2011

Quick Tip: Using your Kindle as a Calculator!

Did you know that your Kindle can be used as a calculator?  No need to go online, you can do simple arithmetic from your Kindle's homepage if you have a Kindle 2, Kindle 3 or Kindle DX.

Simple examples

Go to your Kindle's Homepage.

Start typing numbers and the search bar pops up. Example, type 456*21 press enter and in a few moments, your answer appears!

It also also recognizes mathematical constants, such as e and pi. So if you want to find the area of a circle, pi(r2) and you know r=4, you would type it as pi*4^2

Other functions include:

  • Elementary mathematics: plus, minus, multiplication, division, power (^) and square root (sqrt)
  • Parenthesis/ bracketing
  • Trigonometry: sin, cos, tan
  • Division by zero = infinity (∞)
  • Simple logarithhms [I tested ln(e^5) = 5]
So some of this can be clumsy, clicking SYM all the time to get numbers and symbols, though on the K3 at least, you can keep the SYM box open as you type.  It's not going to replace your scientific calculator and I doubt you could take it into a test, but it might cone in handy!

There are times when you get more than just the answer though! Below I did a simple 2+4 so it brings up book results containing similar answers (such as 2:4 in the Bible)

Alternatively, you can open up your Web Browser (Menu >Experimental > Web Browser) and go to the google homepage. Type in your equation, and up pops an answer.

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