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OAR Study Guide 2026

Everything you need to pass the OAR exam in one place: the exam format, every topic to study, real practice questions with explanations, flashcards, and full-length practice tests. Free, no sign-up needed.

OAR exam key facts

  • The OAR consists of three computer-adaptive subtests: the Math Skills Test, Reading Comprehension Test, and Mechanical Comprehension Test. Source
  • The OAR takes about 1 to 2 hours to complete in APEX. Source
  • Examinees get no more than three attempts at the current OAR/ASTB-E, and a full ASTB-E retest requires 30 full calendar days between administrations. Source
  • Existing ASTB scores remain valid unless the examinee takes the ASTB-E, and the most recent attempt becomes the score of record. Source
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📋 OAR Exam Format at a Glance

40
Questions
60 min
Time Limit
60.00%
Passing Score
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📚 OAR Topics to Study (69)

OAR Math Skills · 7 cardsOAR Mechanical Reasoning · 7 cardsOAR Reading Comprehension · 7 cardsOAR Math Skills · 7 cardsOAR Math Skills: Algebraic Expressions · 7 cardsOAR Math Skills: Algebraic Expressions · 7 cardsOAR Math Skills: Algebraic Expressions · 7 cardsOAR Math Skills: Algebraic Expressions · 7 cardsOAR Math Skills: Geometry · 7 cardsOAR Math Skills: Geometry · 7 cardsOAR Math Skills: Geometry · 7 cardsOAR Math Skills: Geometry · 7 cardsOAR Math Skills: Word Problems · 7 cardsOAR Math Skills: Word Problems · 7 cardsOAR Math Skills: Word Problems · 7 cardsOAR Math Skills: Word Problems · 7 cardsOAR Mechanical Comprehension: Electricity · 7 cardsOAR Mechanical Comprehension: Fluids · 7 cardsOAR Mechanical Comprehension: Forces · 7 cardsOAR Mechanical Comprehension: Simple Machines · 7 cardsOAR Mechanical Reasoning · 7 cardsOAR Reading Comprehension · 7 cardsOAR Reading Comprehension · 7 cardsOAR Reading Comprehension · 7 cardsOAR Reading Comprehension · 7 cardsOAR Reading Comprehension: Inferences · 7 cardsOAR Reading Comprehension: Main Idea · 7 cardsOAR Reading Comprehension: Vocabulary in Context · 7 cardsOAR Reading Comprehension: Vocabulary in Context · 7 cardsOAR Reading Comprehension: Vocabulary in Context · 7 cards
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✍️ Sample OAR Questions & Answers

1. A storage facility charges $1.25 per square foot per month. If a unit measures 10 feet by 14 feet, what is the total cost for 6 months?
✓ $1,050

The unit is 140 sq ft (10 × 14), costing $175/month (140 × $1.25), so 6 months costs $175 × 6 = $1,050.

2. Which of the following is a binomial?
✓ 3x + 5

A binomial has exactly two terms; 3x + 5 has two terms.

3. If voltage doubles while resistance stays constant, what happens to power?
✓ Power quadruples

Since P = V²/R, doubling voltage squares the effect, so power quadruples.

4. Which of the following best describes a force couple?
✓ Two equal and opposite forces that produce rotation

A couple consists of two equal, opposite, non-collinear forces that produce pure rotation (torque) with no net linear force.

5. A fixed pulley is attached to the ceiling to lift a load. What is the primary advantage of this single fixed pulley?
✓ It changes the direction of the applied force

A single fixed pulley provides a mechanical advantage of only 1 but allows the user to pull downward instead of lifting upward.

6. An electrical device uses 600 watts of power when connected to a 120-volt source. What is the current flowing through the device?
✓ 5 amperes

The formula for electrical power is Power (P) = Voltage (V) × Current (I). To find the current, rearrange the formula to I = P / V. Therefore, Current = 600 watts / 120 volts = 5 amperes.

🎯 Free OAR Practice Tests

OAR Math Skills: Word Problems · 7 questionsOAR Reading Comprehension · 7 questionsOAR Reading Comprehension · 7 questionsOAR Math Skills: Word Problems · 7 questionsOAR Math Skills: Word Problems · 7 questionsOAR Reading Comprehension · 7 questionsOAR Reading Comprehension: Vocabulary in Context · 7 questionsOAR Reading Comprehension: Vocabulary in Context · 7 questionsOAR Math Skills: Word Problems · 7 questionsOAR Reading Comprehension · 7 questions

📖 OAR Guides & Articles

Your OAR Study Path
1. Learn with Flashcards → 2. Drill Practice Tests → 3. Take the Full Exam Simulation
🃏 OAR Flashcards (444)🏆 OAR Exam Simulation

What Practice Test Geeks adds beyond an AI chat for OAR

An AI chatbot can quiz you, but it can't reproduce the exam conditions or keep your record. Here you get:

  • A timed, full-length OAR mock exam — 40 questions in 60 minutes with a 60% pass mark, modeled on the official exam's question count and time limit, followed by a score report broken down by exam domain.
  • A fixed OAR question bank: the same test every attempt, so your score is comparable from one try to the next instead of changing with every regenerated quiz.
  • Progress saved on your device: completed tests, scores and missed questions stay in My Progress, so you can retake only what you got wrong.
  • A printable OAR cheat sheet you can print or save as a PDF.
  • OAR flashcards built from the same question bank.
  • Free OAR practice tests with the correct answer shown after each question.
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How this page was made: written with AI tools and published by Nathan Beja, founder of Practice Test Geeks, who is responsible for its content. Exam facts are checked against the official sources listed below. Not reviewed by a subject-matter expert. Editorial policy

Sources & references

Exam facts on this page (fees, format, dates, passing scores) are checked against these official sources; the date is our last check. Editorial policy

  1. med.navy.mil — Exam format, retake policy, score validity, test delivery, eligibility, score release, time limit · verified Oct 2026
OAR Study Guide 2026 — Exam Format, Topics & Practice Questions