About the Number 8100 (Eighty-one Hundred)

GDT was given the handle gerald8100 when he created an AzCentral.com account.

The number 8100 can be written "eight thousand one hundred" or "eighty-one hundred."

   8100 = 81 x 100 = 9^2 x 10^2 = (3^2)^2 x 10^2

   sqrt(8100) = 90
                  _________
   1 / 8100 = 0.00012345679
Exercises
  1. 1 / 81 written as a decimal number is _________________.

  2. List the prime factors for number 8100.

  3. No or Yes: Eighty-one hundred equals three-squared squared times ten-squared.

  4. No or Yes: sqrt(8100) > 10^2.

  5. The nano, pico and femto SI (metric) prefixes are 10^-9, 10^-12 and 10^-15, respectively. 1 / 8100 rounded to the nearest femto is ______________________________.


Creator: Gerald D. Thurman [gthurman@gmail.com]
Created: 31 January 2007

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