The TI83/84 calculator
displays long numbers with several digits, both large and small in value,
in scientifc notation using an **E. **52,000,000,000 is displayed as
5.2E10 which means the same as .
Similarly, 0.00000000052 is 5.2E-10 or .
To obtain the results shown below, input each number and then press the
**ENTER **key.

When computation of
numbers in scientific notation is desired, there is no need to convert to standard
notation first. Numbers can be entered into the calculator using the** E **notation.There
is a key for** E**. Locate the comma key
key (immediately above the 7 key) and notice that it has an** EE **above
it.

For example, to compute
, enter**
(2.3,** then press **2nd **followed by the
key to get the** E**, then enter **5** and the closing parenthesis**.
**The result is shown in the first screen below. To enter the second number,
enter **(7.4**, then press **2nd **followed by the
key to get the** E**, then enter **8 **and the closing parenthesis, and
press **ENTER. **The results are shown below.

Of course you can get the same results by pressing more keys and entering (2.3x10^5)(7.4x10^8). Both methods are shown in the final screen below. In either case the result is 1.702E14 or 170,200,000,000,000.

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