Chỉ cần chia việc là chúng ta dựng lều nhanh hơn.

This is a very common Vietnamese pattern meaning something like:

• as long as ... , ...
• if we just ... , then ...
• all we need to do is ... , and ...

So:

• Chỉ cần chia việc là chúng ta dựng lều nhanh hơn.

means roughly:

• If we just split up the work, we’ll put up the tent faster.

Here, chỉ cần introduces the condition, and là links it to the result.

Vietnamese often leaves out the subject when it is obvious from context.

In this sentence, chia việc literally means divide the tasks/work, but the doer is understood to be we because the second clause says chúng ta.

So English often needs to say:

• If we divide the work...

but Vietnamese can simply say:

• Chỉ cần chia việc...

This omission is very normal and natural in Vietnamese.

Chia việc means to divide the work, split the tasks, or share out the jobs among people.

• chia = divide, split
• việc = work, task, job

In context, it suggests giving different people different parts of the job so the whole thing gets done more efficiently.

A close English idea would be:

• split up the tasks
• divide the work
• share the workload

Dựng lều means to put up a tent, set up a tent, or pitch a tent.

• dựng = erect, set up
• lều = tent

So dựng lều is the natural phrase for physically setting up a tent.

Not in this sentence.

Although là often means is/are in simple equations like Tôi là giáo viên (I am a teacher), in this structure it does a different job.

In chỉ cần ... là ..., là works more like a linker between:

• the condition: chỉ cần chia việc
• the result: chúng ta dựng lều nhanh hơn

So here it is closer to:

• then
• and then
• a grammatical connector with no direct English equivalent

You should learn chỉ cần ... là ... as one whole pattern.

Nhanh hơn means faster or more quickly.

• nhanh = fast, quickly
• hơn = more, -er

So dựng lều nhanh hơn means:

• set up the tent faster

Like in English, the comparison does not always need to say exactly faster than what. It is understood from context:

• faster than if we did not divide the work
• faster than before
• faster than doing it another way

This is about whether the listener is included.

• chúng ta = we, including the listener
• chúng tôi = we, excluding the listener

Since this sentence is probably talking to the group that will set up the tent together, chúng ta is the natural choice.

So it means:

• we all, including you

If the speaker were talking to someone outside the group, they might use chúng tôi instead.

If you translate word by word, it may look something like that, but Vietnamese and English package ideas differently.

A more natural breakdown is:

• Chỉ cần = just need to / as long as
• chia việc = divide the work
• là = then / result-linker
• chúng ta dựng lều nhanh hơn = we set up the tent faster

So the sentence works as a complete idea, not as a strange literal sequence.

A good natural English rendering is:

• If we split up the tasks, we’ll set up the tent faster.

Yes. Vietnamese has several natural ways to express the same idea. For example:

• Chỉ cần chia việc thì chúng ta sẽ dựng lều nhanh hơn.
• Nếu chia việc thì chúng ta dựng lều nhanh hơn.
• Chúng ta chia việc đi, như vậy sẽ dựng lều nhanh hơn.

These are slightly different in tone:

• chỉ cần ... là ... = as long as / all we need to do is ...
• nếu ... thì ... = if ... then ...
• ... đi = suggestion, like let’s ...

Your original sentence is natural and concise.

It sounds natural and conversational, but not slangy.

It would fit everyday situations like camping, teamwork, or giving practical suggestions. It is not overly formal, but it is perfectly correct standard Vietnamese.

If you wanted a slightly more explicit or polished version, you might add sẽ:

• Chỉ cần chia việc là chúng ta sẽ dựng lều nhanh hơn.

That makes the result sound a bit more clearly future-oriented:

• As long as we divide the work, we’ll set up the tent faster.

It is best understood as work in a general sense, or tasks/jobs collectively.

Vietnamese nouns usually do not have singular/plural endings like English. So việc can be understood from context.

In chia việc, English often translates it as:

• divide the work
• split up the tasks

Both are fine, depending on what sounds most natural in English.

No, it is not required.

Vietnamese often leaves future meaning to be understood from context. In this sentence, the meaning is already clear: dividing the work will lead to a faster result.

So both are natural:

• Chỉ cần chia việc là chúng ta dựng lều nhanh hơn.
• Chỉ cần chia việc là chúng ta sẽ dựng lều nhanh hơn.

Adding sẽ makes the future/result meaning a bit more explicit, but leaving it out is very common.