Is saying you took the paper needed correct English?

"Took the paper needed" is grammatically correct, but it is not a complete sentence. It is a phrase that could be used in a sentence like:

* "I took the paper needed for the exam."

* "She took the paper needed to finish her project."

To make it a complete sentence, you would need to add a subject and verb. For example:

* "I took the paper needed."

* "She took the paper needed."

It's also worth considering whether "took" is the most appropriate verb for the situation. For example, you might say:

* "I gathered the paper needed for the exam."

* "She collected the paper needed to finish her project."

The choice of verb will depend on the specific context.