Find the missing number. Write your answer as a whole number or decimal.

Question

× 0.1 =22.1

Answer 1

To find the missing number (let's call it \( x \)) in the equation

\[ x \times 0.1 = 22.1, \]

we can isolate \( x \) by dividing both sides of the equation by 0.1:

\[ x = \frac{22.1}{0.1}. \]

Calculating the right side:

\[ \frac{22.1}{0.1} = 221. \]

Therefore, the missing number is

\[ \boxed{221}. \]