Answer:## Exponential FormNumbers between 0.998 and 0.999 can be represented in exponential form. Here are a few examples:- 0.9985 = 9.985 × 10^(-1)- 0.9988 = 9.988 × 10^(-1)In general, any number between 0.998 and 0.999 can be written in the form:- x = 9.98y × 10^(-1)where y is a digit between 0 and 9.