Question

How can I use scientific notation on a Casio calculator?

Answer 1

The above question is based on how a Casio calculator is used to for calculating using complex scientific notation. To use scientific notation, we have to follow some simple keystrokes on the scientific calculator which is not present in normal calculators.

Complete step by step solution:
Casio is a scientific calculator that can perform more advanced operations than basic addition, subtraction, division and multiplication. Sometimes it is not possible to solve a problem which has a very large number.

For example, if the weight of earth is 6,000,000,000,000,000,000,000,000 kg so here it has a large number of zeros. Typing these zeros in the calculator will be time consuming.
So, using scientific calculators we can write these zeros in a very compact form.

Scientific notation is a method of writing a large or a very small number that is between 1 and 10 times of power of 10. It is written as
$M \times {10^N}$ where $1 \leqslant M \leqslant 10$

So, there are some rules, If N is positive then we move decimal units to the right and if it is negative then we move it to the left. Using the Casio calculator, we can enter the above expression by using a few keystrokes.

First, we need to enter M i.e., number on the calculator and then multiplication sign. After the sign enters the number 10.

Then for the exponent of 10 we need to hit the exponent button. This varies on different calculators which will look like ${x^y}$,${a^x}$,exp,^.

Then enter N i.e., power of 10. Then press enter.

Note: An important thing to note is that when a scientific calculator has to deal with large or very small numbers that don't have enough space or room to display on its screen then it will use its own form of scientific notation. For example, $6 \times {10^{24}}$ is written as 6E24.