Question

For a fixed base, if the exponent decreases by 1, the number becomes

• A. One-tenth of the previous number
• B. Ten times of the previous number
• C. Hundredth of the previous number
• D. Hundred times of the previous number

Answer 1

The correct option is A One-tenth of the previous number

For a fixed base, if the exponent decreases by 1, the number becomes one tenth of the previous number.
For example, consider ${10}^5$.
If the exponent decreases by 1, it becomes,
${10}^{5-1}={10}^4⟹\frac{{10}^4}{{10}^5}=\frac{1}{10}$