Guessing Strategies

When and how to guess effectively

Guessing Strategies (ACT Test Strategy)

The Golden Rule: Never Leave Anything Blank!

The ACT has NO guessing penalty.

What this means:

  • Wrong answer = 0 points
  • Blank answer = 0 points
  • No difference!

Therefore: Always bubble something for every question, even if you have to guess randomly.

Why Guessing Matters

The Math

If you guess randomly on 5 questions with 4 choices each:

  • Expected correct by chance: 5 × 0.25 = 1.25 questions
  • Expected incorrect: 3.75 questions
  • Net gain: ~1 more point vs. leaving blank

If you use smart guessing strategies:

  • Can often eliminate 1-2 choices
  • Success rate increases to 33% or 50%
  • Expected gain: 1.5-2.5 questions on 5 guesses

Bottom line: Guessing strategically can add 2-3 points to your score!

Types of Guessing

1. Random Guessing (Last Resort)

When: You have NO idea and NO time

Strategy:

  • Pick one letter (B or C) and use it for all random guesses
  • Consistency gives you ~25% success rate
  • Don't randomly switch between letters

Why this works:

  • ACT distributes correct answers fairly evenly
  • Sticking to one letter gives you statistical advantage over completely random pattern
  • Saves time (don't even read question)

When to use:

  • Final 30 seconds of section
  • Multiple questions with no time to read
  • Complete lack of knowledge on topic

2. Educated Guessing (Much Better!)

When: You can eliminate at least one answer choice

Strategy:

  • Read question carefully
  • Eliminate obviously wrong choices
  • Choose from remaining options

Success rate:

  • Eliminate 1 choice → 33% chance (vs. 25%)
  • Eliminate 2 choices → 50% chance (vs. 25%)
  • Eliminate 3 choices → 100% (educated guess becomes right answer!)

Goal: Eliminate as many wrong answers as possible before guessing

3. Strategic Guessing (Best Option)

When: You have some knowledge but aren't certain

Strategy:

  • Use context clues
  • Apply test-taking logic
  • Make inference based on partial knowledge
  • Trust your intuition

Much better than random guessing! Can boost success rate to 40-60%.

Section-Specific Guessing Strategies

English Guessing Strategies

Strategy 1: When in doubt, choose the shortest answer

Why?

  • ACT rewards conciseness
  • Wordier options often contain redundancy
  • "Omit the underlined portion" is often correct

Exception: When brevity loses meaning or clarity

Example:

A. the fact that it was raining outside
B. the outdoor rain
C. the rain ✓
D. it was raining outside

Choose C — shortest and clearest

Strategy 2: "NO CHANGE" is right about 25% of the time

Don't avoid it!

  • It's correct roughly 1 in 4 questions
  • If sentence sounds fine, choose it
  • Don't assume there must be an error

Strategy 3: Eliminate choices with obvious errors

Common wrong answer patterns:

  • Creates sentence fragment
  • Wrong verb tense
  • Pronoun disagreement
  • Misplaced modifier
  • Redundancy

Strategy 4: Consistent tense/style

  • Check surrounding sentences
  • Match tense (past, present, future)
  • Match style (formal vs. informal)
  • Consistency usually wins

Strategy 5: Trust your ear

  • Read it aloud in your head
  • If it sounds wrong, it probably is
  • Standard English grammar should sound natural

Math Guessing Strategies

Strategy 1: Eliminate impossible answers

Check for:

  • Wrong sign (positive when should be negative)
  • Too large or too small
  • Wrong units
  • Doesn't match question (asks for X, answer gives Y)

Example:

"What is 15% of 80?"

A. 1.2
B. 12 ✓
C. 120
D. 1,200
E. 12,000

Eliminate: C, D, E are way too large (15% must be less than 80)
Eliminate: A is too small
Guess: B

Strategy 2: Test the middle value (C)

For "solve for X" questions:

  1. Plug C into the equation
  2. If it works, choose C
  3. If it doesn't, often tells you whether answer is larger or smaller
  4. Adjust guess accordingly

Works because: ACT usually lists numerical answers in order

Strategy 3: Use logic and estimation

Example:

"Circle has radius 5. What's the area?"

A. 10π
B. 15π
C. 25π ✓
D. 50π
E. 100π

Logic: Area = πr² = π(5)² = 25π

Even if you forget formula:

  • Radius 5 → area probably has 5 or 25 in it
  • 25 more likely than 5 for area
  • Eliminates A, B, D, E

Strategy 4: Check if answer makes sense

Example:

"Speed is 60 mph for 3 hours. Distance?"

A. 20 miles
B. 63 miles
C. 180 miles ✓
D. 300 miles
E. 600 miles

Common sense: Going 60 mph for 3 hours should be around 180 miles

Strategy 5: Recognize "distractor" patterns

ACT loves these wrong answers:

  • Result of common mistake (forgetting negative sign)
  • Partial answer (forgot to finish calculation)
  • Used wrong formula
  • Arithmetic error

If your answer matches a choice easily, double-check your work!

Reading Guessing Strategies

Strategy 1: Eliminate extreme language

Watch for:

  • always, never, only, all, none
  • must, impossible, definitely, absolutely

These are often wrong because:

  • Reading passages are nuanced
  • Extreme claims are rarely supported
  • ACT prefers moderate, qualified answers

Better words in right answers:

  • often, sometimes, may, can, suggests
  • most, many, some

Example:

Question: "The author's attitude toward X can be described as:"

A. complete admiration with no reservations
B. thoughtful appreciation with some concerns ✓
C. total rejection and harsh criticism
D. absolute indifference

B is moderate (best guess if unsure)

Strategy 2: Choose answer closest to passage

If two answers seem possible:

  • Which is more directly stated?
  • Which requires fewer assumptions?
  • Choose the one closer to actual text

ACT Reading rewards close reading, not creative interpretation

Strategy 3: Main idea questions

Eliminate:

  • Too narrow (just one detail from passage)
  • Too broad (beyond scope of passage)
  • Not mentioned in passage

Choose:

  • Covers whole passage
  • Matches introduction and conclusion
  • Appropriate scope

Strategy 4: Use line references

If question has line numbers:

  • Read those specific lines
  • Read sentence before and after
  • Answer is usually right there

Don't rely on memory — verify in passage!

Strategy 5: When totally stuck

Look for "safe" middle-ground answer:

  • Not too extreme
  • Balanced perspective
  • Acknowledges complexity

Science Guessing Strategies

Strategy 1: Graph reading questions

Often straightforward:

  • Find X value on axis
  • Trace to line/data point
  • Read Y value
  • Choose matching answer

Even if confused about passage, can often answer graph questions correctly

Strategy 2: Trend identification

Common patterns:

  • As X increases, Y increases (direct relationship)
  • As X increases, Y decreases (inverse relationship)
  • No clear relationship

Look at graph/table:

  • Which direction does data go?
  • Choose answer matching that trend

Strategy 3: Compare experiments

Questions ask: "How does Experiment 2 differ from Experiment 1?"

Strategy:

  • Find both experiments
  • Identify one changed variable
  • That's the answer

Don't overthink — usually ONE clear difference

Strategy 4: Conflicting Viewpoints

If stuck:

  • Find relevant scientist's section
  • Look for direct statement
  • Choose answer matching that scientist's view

Don't: Mix up scientists' positions!

Strategy 5: Eliminate answers requiring outside knowledge

ACT Science tests reading comprehension, not science knowledge

If answer requires you to know:

  • Specific chemistry formulas
  • Advanced biology concepts
  • Physics equations

...and it's not in the passage, it's probably wrong.

Choose answer based on passage information only

When to Guess and Move On

Time-Based Guessing

English:

  • If > 45 seconds on one question → guess and move on

Math:

  • If > 90 seconds with no progress → guess and flag for return

Reading:

  • If > 60 seconds on inference question → guess and move on

Science:

  • If > 60 seconds on complex question → guess and move on

Difficulty-Based Guessing

Know your limits:

  • If question is clearly beyond your current skill level
  • If you've never seen this type of problem before
  • If you don't understand what's being asked

Make educated guess and move on — don't waste time on impossible questions

The Two-Pass Strategy

Especially useful for Math and Science:

First Pass (75% of time):

  • Answer all questions you know
  • Skip hard ones (circle in test booklet)
  • Make quick educated guesses on medium-difficulty

Second Pass (25% of time):

  • Return to circled questions
  • Spend more time
  • Use process of elimination
  • Make educated guesses

Ensures you don't run out of time on easy questions while stuck on hard ones!

Improving Your Guessing Success Rate

1. Learn Common Wrong Answer Patterns

English:

  • Wordiness and redundancy
  • Inconsistent verb tense
  • Misplaced modifiers

Math:

  • Forgetting negative sign
  • Using wrong formula
  • Stopping calculation too early

Reading:

  • Extreme language (always, never)
  • Too narrow or too broad
  • Not supported by passage

Science:

  • Confusing experiments
  • Mixing up variables
  • Requiring outside knowledge

Study these patterns → recognize them → eliminate them → better guesses!

2. Practice Process of Elimination

On practice tests:

  • Don't just find right answer
  • Practice eliminating wrong answers
  • Understand WHY each wrong answer is wrong
  • Builds pattern recognition

3. Track Your Guesses

On practice tests:

  • Mark questions where you guessed
  • Check how many you got right
  • Analyze: Were they random or educated guesses?
  • Goal: Improve educated guess success rate to 40-50%

4. Review Missed Questions

After practice test:

  • Look at questions you guessed on
  • Understand the correct answer
  • Identify what you could have eliminated
  • Learn for next time

Common Guessing Mistakes

Leaving questions blank
Always bubble something!

Switching letters randomly
Pick one letter for random guesses, stick with it

Second-guessing good educated guesses
Trust your elimination process

Spending too long trying to avoid guessing
Sometimes guessing and moving on is smartest strategy

Not using process of elimination
Even eliminating one choice helps!

Guessing without reading question
Unless completely out of time, at least skim question

Choosing longest/most complex answer
Often wrong, especially in English

Choosing answers with familiar passage words
ACT uses these as distractors!

Quick Guessing Tips

Never leave blank — no guessing penalty
Eliminate first — even one wrong choice helps
Use one letter — for random guesses
Trust POE — process of elimination works
Be consistent — don't second-guess too much
Watch the time — know when to guess and move on
Middle is safe — B and C statistically good for random guesses
Shorter is better — in English section
Avoid extremes — in Reading section
Check graphs — Science guesses often in visuals

Developing a Guessing Strategy

Before Test Day:

1. Practice eliminating wrong answers

  • On every practice question
  • Understand why answers are wrong
  • Build pattern recognition

2. Track your guessing success rate

  • How many educated guesses do you get right?
  • Goal: 40-50% (vs. 25% random)

3. Learn section-specific patterns

  • English: shorter, concise answers
  • Math: eliminate impossible values
  • Reading: avoid extremes
  • Science: stick to passage info

4. Develop timing awareness

  • Know when to guess and move on
  • Don't waste time on impossible questions

On Test Day:

1. Stay calm

  • Guessing is normal and expected
  • Even top scorers guess on some questions

2. Use your practiced strategies

  • Don't abandon what you've learned
  • Trust your elimination skills

3. Make quick decisions

  • Eliminate what you can
  • Choose and move on
  • Don't agonize

4. Fill in ALL bubbles

  • Check at end of each section
  • Use last 30 seconds for random guesses if needed

Remember: Strategic guessing is a skill, not cheating or giving up. The best test-takers know when to invest time in solving versus when to make an educated guess and move on. Practice eliminating wrong answers, learn common patterns, and develop the confidence to guess intelligently. Those 2-3 extra points from smart guessing could be the difference between your target score and falling just short!

📚 Practice Problems

1Problem 1easy

Question:

You have no idea how to solve a math problem. What is the BEST guessing strategy?

A) Leave it blank B) Choose "C" (the middle option) C) Eliminate any obviously wrong answers, then guess D) Bubble in "A" for all questions you don't know E) Skip it and come back later

💡 Show Solution

Strategic guessing can improve your score significantly.

Key facts about ACT: • NO penalty for wrong answers • Blank = 0% chance of points • Random guess = 25% chance (1 out of 4 or 5) • Eliminate 1 wrong → 33% chance • Eliminate 2 wrong → 50% chance!

Step 1: Never leave blanks Blank = guaranteed 0 points Guess = possible points

Step 2: Evaluate strategies

A) "Leave it blank" • 0% chance of points ✗ • Wastes an opportunity ✗

B) "Choose C (middle option)" • No better than random (20% or 25%) ✗ • Doesn't use problem information ✗

C) "Eliminate obviously wrong answers, then guess" • Uses problem information ✓ • Improves odds above 25% ✓ • Maximizes chance of points ✓ BEST!

D) "Bubble in A for all unknowns" • Same as random (25%) ✗ • Doesn't eliminate options ✗

E) "Skip it and come back later" • Fine if time allows ✓ • But must guess before time's up! ✗

Answer: C) Eliminate any obviously wrong answers, then guess

Elimination strategies:

Math: • Eliminate negative when answer must be positive • Eliminate unreasonably large/small values • Plug in answer choices to eliminate wrong ones

English: • Eliminate options that create grammar errors • Eliminate wordy options when concise is better • Eliminate options that change meaning incorrectly

Reading: • Eliminate extremes ("always," "never," "only") • Eliminate options contradicting the passage • Eliminate options answering different question

Science: • Eliminate options contradicting data • Eliminate options using wrong units • Eliminate options outside data range

Guessing odds: • 5 options, random guess: 20% • Eliminate 1: 25% • Eliminate 2: 33% • Eliminate 3: 50% • Every elimination helps!

2Problem 2medium

Question:

On the ACT Reading section, you're unsure about a question asking for the "main idea." Two answer choices seem possible. How should you decide?

F) Choose the first one you read G) Choose the one that covers the entire passage, not just one paragraph H) Choose the most specific answer J) Leave it blank K) Choose the longest answer

💡 Show Solution

Strategic elimination for reading comprehension questions.

Question type: Main idea Situation: Two possible answers remaining

Step 1: Understand main idea characteristics Main idea should: • Cover ENTIRE passage (not just part) • Be broad enough to include all paragraphs • Not be too specific (that's a detail) • Not be too general (that's vague)

Step 2: Evaluate decision strategies

F) "Choose the first one you read" • Random choice ✗ • Doesn't use passage knowledge ✗

G) "Choose the one that covers the entire passage, not just one paragraph" • Matches main idea definition ✓ • Main idea = whole passage ✓ • Common trap: detail from one paragraph ✓ BEST!

H) "Choose the most specific answer" • Specific = detail, not main idea ✗ • Main idea is broader ✗

J) "Leave it blank" • No guessing penalty! ✗ • 50% chance (2 options left) is good ✗

K) "Choose the longest answer" • Length doesn't indicate correctness ✗ • No correlation ✗

Answer: G) Choose the one that covers the entire passage, not just one paragraph

Main idea vs. Supporting detail:

Main idea: • Covers whole passage • Broader scope • Often in intro or conclusion • Answers "What is this passage about?"

Supporting detail: • Appears in one paragraph • Specific example or fact • Supports main idea • Answers "What evidence is given?"

ACT trap answers for main idea:

  1. Too specific (supporting detail from one paragraph)
  2. Too general (could apply to many passages)
  3. Contradicts passage
  4. True statement but not the MAIN point

Elimination checklist: □ Does it cover the whole passage? □ Is it mentioned in multiple paragraphs? □ Does it connect to the title/topic? □ Is it broad but not too vague?

When stuck between two, ask: "Which one is the umbrella that the other fits under?" The broader one covering more content = main idea!

3Problem 3hard

Question:

With 30 seconds left, you have 5 questions unanswered. You notice your answer pattern is: A, A, B, C, D, A, B, C, D. What should you do?

A) Leave them blank to avoid wrong answers B) All guess "A" since you haven't used it much recently C) Continue the pattern with A, B, C, D, A D) Randomly bubble different letters E) Just bubble all "C"

💡 Show Solution

Advanced guessing strategy under extreme time pressure.

Situation: • 30 seconds left • 5 questions unanswered • Recent pattern: A, A, B, C, D, A, B, C, D

Time available: 30 seconds ÷ 5 questions = 6 seconds each Too little time to read questions!

Step 1: Understand ACT answer distribution • ACT balances answer distribution • Over the whole test, roughly equal A, B, C, D, E/F • But not necessarily in order or in short sequences • Your recent pattern doesn't predict future answers

Step 2: Evaluate strategies

A) "Leave them blank" • Guaranteed 0 points ✗ • No penalty for guessing ✗ • Always guess! ✗

B) "All guess A (haven't used it much recently)" • Gambler's fallacy ✗ • Past answers don't affect future ones ✗ • But at least you're guessing! Partially OK

C) "Continue the pattern with A, B, C, D, A" • Assumes pattern continues (unlikely) ✗ • ACT doesn't follow predictable patterns ✗ • But still better than blanks ✗

D) "Randomly bubble different letters" • Statistical best approach ✓ • Maximizes chance of hitting correct answers ✓ • No pattern assumption ✓ BEST!

E) "Just bubble all C" • Common strategy (middle option) ✓ • Same as random over 5 questions ≈ • Simpler to execute quickly ✓ • Practically equivalent to D

Answer: D) Randomly bubble different letters (or E is acceptable)

Why random/varied is best:

If correct answers are: B, D, A, C, B

• All "A": 1/5 correct (20%) • All "C": 1/5 correct (20%) • Random mix (A,B,C,D,E): ≈1-2/5 correct (20-40%)

Random gives you best AVERAGE outcome!

Extreme time pressure strategy:

  1. No time to read? → Must guess
  2. Never leave blank (no penalty!)
  3. Vary your guesses (A, B, C, D pattern)
  4. OR pick one letter for simplicity (all C)
  5. Bubble neatly (no time to fix mistakes!)

Prevention is better: • Pace yourself throughout section • Don't spend too long on hard questions • Mark questions to return to • Always fill in an answer before moving on • Leave 1-2 minutes for final check

Reality check: 5 random guesses (25% each) = expect 1-2 correct That's 1-2 more points than leaving blank! Over multiple sections, these points add up!