42/42 = 100%
The fraction 42/42 represents a complete amount, or 100%. You might see a value like this when all 42 students turn in a permission slip, every item on a checklist is finished, or a team completes all of its assigned tasks.
You can picture it as one whole pizza with every slice still included, even if the pizza is divided into 42 tiny pieces. Since the top and bottom numbers are the same, you can quickly recognize that the fraction is a full amount rather than a part of one.
A common mistake is thinking that 42/42 is larger than 1 because the numbers look large. The size of the numbers does not matter when they are equal; the fraction still means exactly one whole, not 42 wholes.