Which is a common way for a scientific calculator to show the number below?

8.1 102

Answer: 8.1e+2 or 8.1E+2 (in the scientific notation mode), based on that the number given is 8.1 * 10².

Explanation

Scientific calculators use the letter e or E to show the numbers in scientific notation mode.

These are some examples of numbers that require scientific notation and how they are shown.

Number Scientific calculator display

6.022 * 10²³ 6.022 e+23

5 * 10 - 12 5 E - 12

So, understanding that your question is about number 8.1 * 10², the scientific calculator could show 8e+2.

Nevertheless, since 8.1 * 10² is 810, not a long number, if the display is not in scientific notation mode, it could just display just 810,