Solve the Equation: Finding the Missing Value in 55-□=28 Using Number Line

To solve the equation $55 - \Box = 28$ using a number line, start at 55 and jump to 50, an easy anchor point, requiring a jump of 5 units.

Next, move from 50 to 28, which requires a further jump of 22 units.

Adding these jumps, $5 + 22$, gives us the total jump needed from 55 to reach 28. Therefore, $\Box = 27$.

Thus, the solution to the problem is $\Box = 27$, which corresponds to the answer choice:

$27$