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Never Leave a Blank: Guessing Strategy for IELTS Reading

IELTS Reading29 August 2026 · 7 min read · WiderAI Team

There is no penalty for wrong answers in IELTS Reading. Every question is worth one mark if correct and zero if wrong — and a blank is also zero. That means guessing is pure upside: a guess can only ever add to your score, never subtract from it. The first rule of the Reading paper follows directly: never, under any circumstances, hand in an answer sheet with empty lines.

This sounds obvious, yet blank answers appear on real answer sheets constantly — usually not because candidates forgot, but because they ran out of time while still "working on" hard questions, or left a line empty intending to come back. Each blank is a discarded lottery ticket. On a three-option question like True/False/Not Given, a random guess is right roughly a third of the time; across a handful of blanks, that is potentially the extra mark or two that moves a band — for free.

But "never leave a blank" is only half a strategy. The other half is guessing well: an informed guess made with ten seconds of structure-reading beats a random one, and a timing plan that triggers guessing at the right moment protects the easier questions you would otherwise rush. Here is the whole system.

Is there really no penalty for wrong answers in IELTS?

Yes — no version of IELTS uses negative marking, in Reading or Listening. Your raw score is simply the count of correct answers out of 40, converted to a band. A wrong answer and a blank are scored identically, so the expected value of any guess is positive and the expected value of a blank is exactly zero. The scoring approach is described by the test's owners at ielts.org.

It is worth internalising why this changes behaviour. Many school and university exams punish wrong answers, and candidates carry that caution into IELTS, treating an unsure answer as a risk. In IELTS it is not a risk; it is a fully-refunded bet. The rational policy is to answer all 40 questions on every test you ever sit — practice included, so the habit is automatic on the day.

How should you guess for each question type?

Not all guesses are equal. A few seconds of structure gets you well above random on most question types.

True/False/Not Given and Yes/No/Not Given

If you genuinely cannot decide, remember what the formats promise: real test sets use all three options across a set, so if your confident answers so far are all True and False, Not Given deserves a look for the remainder. And be honest about a common self-trap — if you searched properly and found nothing on the statement's topic, that is not a failed search; that is evidence for Not Given.

Multiple choice

Eliminate first, then guess among survivors. Options that copy several exact phrases from the passage are statistically suspect — correct options tend to be rewritten — and options with extreme wording (all, never, the only) fail more often than moderate ones. Knocking out one of four options moves you from 25% to 33% before any real understanding is involved.

Matching headings and matching features

These are closed systems, which makes them the best guessing territory on the paper. Match everything you are confident about first and cross those options off. Whatever remains gets distributed among the leftover paragraphs — even random assignment among three leftovers beats a blank, and one elimination improves every remaining guess.

Sentence, summary, note and table completion

Grammar is your guessing engine. The gap tells you its part of speech: after the comes a noun phrase; before a noun sits an adjective; a gap after to wants a verb. Scan the right area of the passage for a word of that type within the word limit, and you are guessing from a shortlist of two or three candidates, not from the whole dictionary. Copy the word exactly as the passage spells it.

Short-answer questions

Same logic: the question word tells you the target — who wants a person, when a time, how many a number. Grab the most plausible noun of that category from the relevant paragraph. Respect the word limit even when guessing; an over-limit answer is wrong no matter how good the guess.

When should you stop trying and guess?

The costliest habit in Reading is heroic persistence. Every minute spent on a question that will not yield is taken from questions you could answer — the marginal minute on question 27 is worth far more spent on questions 28 to 40.

A workable discipline is the two-visit rule. First visit: give the question a fair attempt, roughly 60 to 90 seconds. If it resists, write your best current guess immediately — not later — put a mark next to the question, and move on. Second visit, if time allows after the set or the passage: fresh eyes and the context you gained downstream often crack it. If not, your guess is already on the sheet and no blank exists to remember.

Writing the guess at the moment you move on is the load-bearing detail. "I'll come back to it" is how blanks are born: under time pressure, you will not come back, or you will come back with 40 seconds left and panic. A written guess converts a risk into a floor.

How do you build guessing into your timing plan?

Guessing is the final layer of a timing system, not a replacement for one.

1. Budget roughly 17, 20 and 23 minutes across the three passages, since difficulty rises, and write answers on the answer sheet as you go — Reading has no transfer time at the end.
2. Apply the two-visit rule inside each passage, with an immediate written guess on every first-visit surrender.
3. At the five-minute mark, stop taking on new deep reading. Close out the questions you can, then sweep the answer sheet for empty lines and fill every one using the question-type tactics above.
4. In the last minute, check the mechanical killers: spelling of copied words, word limits, and answers written next to the right question numbers.

Then train the sequence until it is boring. Under exam adrenaline you will not invent good behaviour; you will repeat whatever you rehearsed. This is the same reason mock exams matter across the whole test — you can pressure-test the speaking equivalent with an IELTS speaking mock test — but in Reading, where a silent blank costs a silent mark, the rehearsed sweep is worth real band points.