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:
- Plug C into the equation
- If it works, choose C
- If it doesn't, often tells you whether answer is larger or smaller
- 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:
- Too specific (supporting detail from one paragraph)
- Too general (could apply to many passages)
- Contradicts passage
- 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:
- No time to read? → Must guess
- Never leave blank (no penalty!)
- Vary your guesses (A, B, C, D pattern)
- OR pick one letter for simplicity (all C)
- 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!
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