Question

The standard notation of 0.85 is .

• A. $8.5\times {10}^1$
• B. $8.5\times {10}^{-1}$
• C. $8\times {10}^{-1}$
• D. $8.5\times {10}^2$

Answer 1

The correct option is B $8.5\times {10}^{-1}$

In standard form, any number is expressed in powers of 10. The decimal number must be in between 1 and 10.
So, 0.85=$8.5\times {10}^{-1}$