Standard Form can have two meanings:
1. General Definition:
The usual way of writing numbers using digits (e.g., 3,560 instead of three thousand five hundred sixty).
2. Scientific Notation:
Where a number is written in two parts: first the digits with the decimal point placed after the first digit, followed by ×10 to a power that puts the decimal point back where it should be.
Play with it here:
../numbers/images/sci-notation.js