How did you change this sentence into declarative Break up the passage three?

The sentence "Break up the passage three" is already a declarative sentence. It makes a statement.

To clarify, here's why:

* Declarative Sentences: These sentences make a statement. They typically end with a period.

* Imperative Sentences: These sentences give a command or instruction. They typically end with a period or an exclamation mark.

If you're looking to rephrase the sentence for a specific purpose, you could try:

* "Please break up the passage into three parts." (More polite request)

* "The passage should be divided into three sections." (Stating a requirement)

Let me know if you have any other sentence you'd like help with!