I think it means you have to write the number in words
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Standard Form, Scientific Notation and Exponential Notation are different expressions for the same thing. When a number is expressed as a value between 1 and 10 multiplied by a power of 10 it is said to be in Standard Form (or Scientific Notation or Exponential Notation). 3.4 x 10^14 : 8.9 x 10^-4 : 1.2 x 10² are all written in standard form. 15.28 x 10³ is NOT in standard form as 15.28 is not a number between 1 and 10. When converted to 1.528 x 10^4 then it is in standard form.
It means the number form of the exponent.
Ten thousandths is ten thousandths in word form. In number form it is 0.001
Meaner is the comparative form of mean, and meanest is the superlative.
A number is in exponential form when it is written with a base and an exponent.