Answer
A NUMBER WITH AN ABSOLUTE VALUE BETWEEN $1$ AND $10$;
INTEGER.
Work Step by Step
According to the definition of Scientific Notation given in the textbook, a number is written in scientific notation when it is expressed in the form $a \times 10^n$. $a$ can take any value between $-10$ and $10$, excluding $0$, while $n$ should be an integer and can take any integer value.
