Question

What should be added to the smallest 5-digit number to get the largest 5-digit number?

• A. 10000
• B. 8999999
• C. 99999
• D. 89999

Answer 1

The correct option is D

89999

The smallest 5-digit number is 10000 and the largest 5-digit number is 99999.

To find what number should be added to 10000 to get 99999, we need to subtract 10000 from 99999.


Thus, we need to find 99999 - 10000.

$\begin{array}{cccccc}& \text{TTh}& \text{Th}& \text{H}& \text{T}& \text{O}\\ & 9& 9& 9& 9& 9\\ -& 1& 0& 0& 0& 0\\ & 8& 9& 9& 9& 9\end{array}$

Thus, 89999 should be added to 10000 to get 99999.