The Ultimate ACT Last-Minute Cheat Sheet

1. Exam Overview & Format

The ACT is a marathon of speed and accuracy. Unlike the SAT, the ACT is notorious for its time crunch—you must move fast. The exam consists of four multiple-choice tests and one optional writing test.

ACT Structure Table

Note: The total testing time is 2 hours and 55 minutes (without Writing) or 3 hours and 35 minutes (with Writing).

2. Scoring & What You Need

The Scale

• Raw Score: The number of questions you answer correctly.
• Scaled Score: Your raw score is converted to a scale of 1-36 for each section.
• Composite Score: The average of your four section scores, rounded to the nearest whole number.

Crucial Rules

• NO PENALTY FOR GUESSING: Never leave a bubble blank. There is no deduction for wrong answers. If you have 1 minute left, pick a "Letter of the Day" (e.g., B/G) and bubble straight down.
• Superscoring: Many colleges categorize scores by taking your highest section scores across multiple test dates to create a new, higher Composite score.

Target Scores (General Benchmarks)

3. Section-by-Section Strategy

English: "Use the Economy Rule"

1. Shorter is Better: If multiple answer choices are grammatically correct, the shortest one is almost always the right answer. The ACT hates redundancy.
2. Trust Your Ear, Then Verify: If it sounds weird, it's probably wrong. Verify with a specific grammar rule.
3. No Change: This option is correct roughly 20-25% of the time. Do not be afraid to pick it.
4. OMIT the Underlined Portion: If this is an option, check it first. If the sentence makes sense without the text, delete it.

Math: "Plug and Chug"

1. Order of Difficulty: Questions 1-30 are generally easier; 31-60 get progressively harder. Bank time on the first half to spend on the second half.
2. Back-Solving: If you are stuck on an algebra problem, take answer choice (C) (the middle value) and plug it into the equation. If it's too big, you know to look lower; if too small, look higher.
3. Pick Numbers: For questions with variables in the answer choices (e.g., "for all $x > 0$"), choose a simple number like 2 or 3, solve, and see which answer choice matches.

Reading: "Hunt and Peck"

1. Do Not Read Deeply: Do not try to memorize the passage. Read the blurb, skim the intro/conclusion, and map the passage (know where things are, not exactly what they are).
2. Refer to Line Numbers First: Do the questions with specific line references first. They are easier to locate.
3. Order Matters: Tackle the passage type you are strongest in first. The order is always: Prose Fiction $\rightarrow$ Social Science $\rightarrow$ Humanities $\rightarrow$ Natural Science.

Science: "Don't Read the Passage"

1. Go Straight to Questions: The ACT Science section is not a science test; it is a "finding data" test. Read the question, find the keyword (e.g., "Figure 2", "Temperature"), locate it in the graph, and match the answer.
2. The "Conflicting Viewpoints" Exception: The passage with 2-3 scientists arguing (no graphs) is the reading-heavy one. Save this for LAST, as it takes the most time.
3. Use Your Finger: Physically trace lines on graphs to the axis. Optical illusions happen under stress.

4. Highest-Yield Content Review

English: Grammar "Big 5"

Math: Must-Know Formulas

The ACT does not provide a reference sheet. Memorize these.

Algebra & Stats

• Slope-Intercept: $y = mx + b$
• Slope Formula: $m = \frac{y<em>2 - y</em>1}{x<em>2 - x</em>1}$
• Average (Mean): $Average = \frac{Total}{Count}$ $\rightarrow$ use the "SUM" trick: $Total = Average \times Count$ (Use this whenever a question mentions a missing test score).
• Probability: $\frac{\text{Target Outcomes}}{\text{Total Possible Outcomes}}$
• Percentages: $\frac{\text{Part}}{\text{Whole}} = \frac{\text{\%}}{100}$

Geometry

• Circle Area: $A = \pi r^2$
• Circle Circumference: $C = 2\pi r$
• Equation of a Circle: $(x-h)^2 + (y-k)^2 = r^2$ (Center is $(h,k)$, radius is $r$).
• Triangle Area: $A = \frac{1}{2}bh$
• Pythagorean Triplets: 3-4-5, 5-12-13 (Memorize these to save time on right triangles).
• Trapezoid Area: $A = \frac{b<em>1 + b</em>2}{2}h$

Trigonometry

• Ratio: SOH CAH TOA ($\sin = \frac{Opp}{Hyp}$, $\cos = \frac{Adj}{Hyp}$, $\tan = \frac{Opp}{Adj}$)
• Identity: $\sin^2\theta + \cos^2\theta = 1$

Science: Common Terms

• Independent Variable: What the scientist changes (usually the X-axis).
• Dependent Variable: What is measured (usually the Y-axis).
• Direct Relationship: As X goes up, Y goes up.
• Inverse Relationship: As X goes up, Y goes down.
• Control/Constant: The group or variable that does not change.

5. Common Pitfalls & Traps

1. The "Excep/Not" Trap: Questions asking "All of the following are true EXCEPT…" are dangerous. Circle the word EXCEPT so you remember you are looking for the false statement.
2. The Unit Trap (Math): The problem gives dimensions in feet but asks for the answer in inches. Always check your units.
3. The Eye-Catcher (Reading): You see a word in the answer choice that appeared in the text. However, the surrounding context in the answer choice is wrong. Do not just match words; match meaning.
4. Extrapolation Errors (Science): If a graph stops at 100 degrees, and the question asks about 150 degrees, you are "extrapolating." Look for the trend (is the line going up or down?) and predict based on the slope. Do not assume the line changes direction.
5. Subject-Verb Separation (English): The ACT puts "junk" between the subject and verb to hide errors. Example: "The box of nails, which sat on the floor for weeks, were rusty." (Wrong: Box is singular, so it should be was).
6. Calculator Overuse: Do not type $3 + 5$ into your calculator. It wastes 5 seconds. Only use it for complex arithmetic.

6. Memory Aids & Mnemonics

7. Important Dates & Logistics

Warning: Check your official ACT Admission Ticket for your exact reporting time and center location.

Typical Schedule (US)

• September, October, December: Fall testing cycle (popular for seniors).
• February, April, June, July: Spring/Summer cycle (popular for juniors).
• Score Release: Multiple choice scores are usually posted online 10-14 days after the test date. Writing scores take an additional 2 weeks.

8. Last-Minute Tips & Test Day Checklist

The Night Before

• Stop Studying: By 8 PM, put the books away. You cannot cram 3 years of Math into 2 hours. Your brain needs rest to process speed.
• Pack Your Bag: Do not rush in the morning.
• Set Two Alarms: Wake up early enough to eat a protein-rich breakfast.

What to Bring

• [ ] Printed Admission Ticket (Cannot be on your phone!)
• [ ] Photo ID (School ID or Driverse License)
• [ ] #2 Pencils (Sharpened, with erasers. NO mechanical pencils allowed!)
• [ ] Calculator (Approved model, e.g., TI-84. Fresh batteries.)
• [ ] Watch (Analog preferred, no smartwatches allowed).
• [ ] Snacks/Water (for the break—essential for energy).

Mental Keys

• Letter of the Day: Pick a letter pair (like A/F or B/G) before you walk in. If time runs out, bubble that letter for every remaining question. Do not zigzag.
• Keep Moving: If a question takes more than 90 seconds, guess, mark it in your booklet, and move on.
• Stay in Your Lane: Don't look at other people. If they flip the page, don't panic. You run your own race.

You have done the work. Trust your gut, manage your time, and crush it.