Solve the Equation: Finding the Number that Makes 0.1 × ? = 1

To solve this problem, we need to find out what number, when multiplied by $0.1$, equals $1$. This means setting up the equation $0.1 \times x = 1$.

To isolate $x$, rearrange the equation:
$x = \frac{1}{0.1}$

Next, perform the division $1 \div 0.1$. Dividing by a decimal is equivalent to multiplying by its reciprocal, thus:
$\frac{1}{0.1} = 1 \times 10 = 10$

Therefore, the solution to the equation is $x = 10$.