Small IELTS Mistakes That Can Cost You Marks

You understood the recording, but missed the plural ending. You found the right paragraph, but answered from what you already knew. You had a good essay idea, but spent so long on the introduction that you rushed the ending.

These are frustrating mistakes because they can hide what you actually know.

If your practice scores keep coming back the same, look at how you lose marks. A missed detail needs a different kind of practice from an unfamiliar word. Here are some useful places to start across Listening, Reading, Writing and Speaking.

Listening: check what you actually wrote

Understanding the conversation is only part of the task. Your answer also needs to follow the instructions.

Check spelling, singular and plural forms, and the number of words allowed. If the instruction allows one word and the answer is “bus”, writing “the bus” makes it too long. IDP’s Listening guidance explains why these details matter.

Before the recording starts, look at the words around each gap. Are you listening for a name, a number, a place or an object? Grammar can help you anticipate an answer, but the recording must support your choice.

Listen for corrections, too. In a practice conversation, someone might say, “Let’s meet on Thursday—sorry, Friday.” Writing down the first day you hear would miss the final arrangement.

After marking your practice answers, replay the sentences you got wrong. Ask yourself whether you missed the sound, misunderstood the meaning or wrote the answer incorrectly. Practise the part that caused the mistake.

Reading: find evidence before choosing an answer

You do not need to understand every unfamiliar word before answering a question. Skim to understand the passage’s structure, then read the relevant section carefully.

Be particularly cautious with True, False and Not Given:

• True: the passage supports the statement.
• False: the passage contradicts it.
• Not Given: the passage does not provide enough information to confirm or contradict it.

These distinctions follow the official IELTS Reading guidance. Use the passage rather than outside knowledge.

Consider this made-up practice sentence:

> The library opens at 9 a.m. every weekday.

Statement	Answer	Reason
The library opens at 9 a.m. on Mondays.	True	Monday is a weekday.
The library opens at 10 a.m. on Mondays.	False	The opening time is 9 a.m.
Monday is the library’s busiest day.	Not Given	Visitor numbers are not mentioned.

Words such as all, some, always and rarely deserve attention because they can change a statement’s meaning.

Aim for evidence, but do not leave answers blank while waiting for absolute certainty. IDP advises attempting every question because there is no negative marking. If you are stuck, make your best choice, move on and return if time allows.

Writing: leave time to complete both tasks

A polished Task 1 cannot make up for an unfinished Task 2.

Use this timing guide:

Task	Minimum length	Suggested time
Task 1	150 words	About 20 minutes
Task 2	250 words	About 40 minutes

Task 2 contributes twice as much as Task 1 to your Writing score. These timings and minimum lengths come from the official IELTS Writing guidance. Include planning and checking within your time allowance.

Before writing Task 2, identify every part of the question. If it asks you to discuss both views and give your opinion, make sure your plan covers all three requirements.

For Task 1, remember the difference between tests: Academic requires a description of visual information; General Training requires a letter.

Practise explaining one idea clearly before adding another. For example:

> Public transport can reduce traffic because one bus can carry many people who would otherwise travel in separate cars.

That sentence develops a point without needing unusual vocabulary. When reviewing your own work, look for words you cannot use confidently and sentences that have become difficult to follow.

Reserve a few minutes to check the errors you make most often, such as missing articles, verb endings or repeated words.

Speaking: give yourself something clear to say

Searching for an impressive word can interrupt an answer you already know how to give.

Start with a direct response, then add a reason or example. For a question about reading, a practice answer could be:

> Yes, I usually read before bed because it helps me relax. At the moment, I’m reading short stories, so I can finish one without staying up too late.

The details give you something to talk about. Use your own experiences when possible, and practise adapting your answer when the question changes.

If you miss a question, politely ask, “Could you repeat the question, please?” The British Council confirms that asking for repetition or clarification does not itself affect your score.

Record a short practice answer and listen back. Can you follow the main idea? Are your words clear? Where did you stop because you were searching for language? Choose one of those points to practise next.

Make your next practice session count

Keep a small error log instead of recording only your overall score.

What went wrong?	What to practise next
Missed a plural ending	Replay the phrase, then write what you hear.
Confused False with Not Given	Find the exact evidence, or identify what is missing.
Rushed the end of an essay	Practise completing both tasks within 60 minutes.
Struggled to extend a spoken answer	Add a reason and a relevant example.

Before your next mock test, revisit the mistakes that appear more than once. Pick one to work on, practise it deliberately, then check whether it happens again.

Continue your preparation with Mock Test for IELTS.