Kad budem završila zadatak, ispisat ću ga i staviti u mapu.

Because budem završila is the future II form, which is very common in Croatian after words like kad (when), ako (if), čim (as soon as), and similar conjunctions when one future action happens before another future action.

So:

• Kad budem završila zadatak, ... = When I have finished / when I finish the task, ...
• then the next action happens: ispisat ću ga i staviti u mapu = I will print it and put it in the folder

You may also hear simpler forms in everyday speech, but this sentence is a standard and very natural way to express this sequence of future events.

It is the future II tense.

It is formed with:

• budem = a form of biti
• završila = the past participle of završiti

So:

• budem završila = I will have finished / I finish in this kind of clause

In Croatian, future II is often used in subordinate clauses to show that one future action will be completed before another future action.

Because the speaker is understood to be female.

The participle agrees with the subject’s gender:

• završila = feminine singular
• završio = masculine singular
• završilo = neuter singular
• završili / završile = plural

So:

• a woman says: Kad budem završila...
• a man says: Kad budem završio...

This is a very important feature of Croatian: participles often show gender.

Because zadatak is the direct object of završiti (to finish), and masculine inanimate nouns usually have the same form in the nominative and accusative singular.

So:

• nominative: zadatak = the task
• accusative: zadatak = the task as an object

Even though English does not show this change, Croatian case rules still apply. In this sentence, the form just happens to look the same.

Ispisat ću means I will print out / I will write out depending on context. Here it means I will print it out.

It is the future I tense:

• infinitive: ispisati
• future: ispisat ću

Croatian future I is often formed by attaching the clitic ću to the infinitive stem:

• pisati → pisat ću
• ispisati → ispisat ću

So although it comes from an infinitive, it is normally written as two words in this pattern.

Ga means it and is the accusative singular masculine/neuter clitic pronoun.

It refers back to zadatak:

• zadatak = the task
• ga = it

So:

• ispisat ću ga = I will print it
• the it is the task

Croatian often uses short unstressed pronouns like ga, je, ih, etc. These usually go in a fixed clitic position, often near the beginning of their clause or after the first stressed element.

Because Croatian often avoids repeating an object if it is already clear from context.

So:

• ispisat ću ga i staviti u mapu

naturally means:

• I’ll print it and put it in the folder

The object ga is understood with both verbs, even though it is only stated once.

You could repeat it in some contexts, but it is often unnecessary.

Because u can take different cases depending on meaning:

• u + accusative = movement into something
• u + locative = location in something

Here there is movement:

• staviti u mapu = to put into the folder

Compare:

• Dokument je u mapi. = The document is in the folder.
  Here it is a location, so mapi is locative.

That is why mapu is correct in your sentence.

No. In this sentence, mapa means a folder, file, or binder, depending on context.

So:

• staviti u mapu = put in the folder

Croatian mapa can mean different kinds of containers for papers, not just a geographic map.

Because Croatian can omit the repeated auxiliary when two infinitives are coordinated.

So:

• ispisat ću ga i staviti u mapu

means:

• I will print it and put it in the folder

The ću applies to both verbs:

• ispisat ću
• (ću) staviti

This is natural and common. A fuller version would sound more repetitive:

• ispisat ću ga i stavit ću ga u mapu

That is possible in some contexts, but the original sentence is smoother.

Because Croatian word order is more flexible than English word order, especially with clitics like ću and ga.

In English, you would normally say:

• When I finish the task, I will print it and put it in the folder.

In Croatian, the placement of short unstressed words is controlled by clitic rules, so you get:

• ispisat ću ga

rather than something that mirrors English word-for-word.

So the sentence order is not random; it follows Croatian grammar, especially the rules for clitics and future forms.

Yes, it is completely natural and grammatical.

It sounds like standard Croatian and clearly expresses a sequence:

1. finish the task
2. print it
3. put it in the folder

It is a good example of:

• future II after kad
• future I in the main clause
• correct use of the pronoun ga
• correct case after u for movement: u mapu

So this is a very useful model sentence for learners.

You could translate it that way to show the grammar, but it is not the most natural English.

More natural English would be:

• When I finish the task, I’ll print it and put it in the folder.
• or Once I’ve finished the task, I’ll print it and put it in the folder.

The Croatian grammar uses future II, but English usually does not match it with a future form after when. So the best translation depends on whether you want:

• a natural English sentence, or
• a grammar-focused explanation of the Croatian structure.