The Officer Aptitude Rating (known as OAR) test is a subset of the larger Aviation Standard Test Battery (known as ASTB), administered at Navy Recruiting Districts (NRDs), is used by the U.S. Navy, Marine Corps, and Coast Guard to select officer aviation program applicants. The newest version of the OAR is series E. The ASTB-E test is a multiple-aptitude battery that measures developed abilities and helps predict future academic and occupational success in the military.

The ASTB is a multiple-choice test which consists of 7 subtests.

- Section 1 – Math Skills Test (MST)
- Section 2 – Reading Comprehension Test (RCT)
- Section 3 – Mechanical Comprehension Test (MCT)
- Section 4 – Aviation and Nautical Information Test (ANIT)
- Section 5 – Naval Aviation Trait Facet Inventory (NATFI)
- Section 6 – Performance Based Measures Battery (PBM)
- Section 7 – Biographical Inventory with Response Validation (BI-RV)

The OAR includes the first three subtests: Math Skills Test (MST), Reading Comprehension Test (RCT), and Mechanical Comprehension Test (MCT). Most examinees take the entire test battery. But, if you are seeking admittance to non-aviation officer programs, you have the option of taking only the OAR portion of the test.

The OAR is a Computer Adaptive Test (CAT). It means that if the correct answer is chosen, the next question will be harder. If the answer given is incorrect, the next question will be easier. This also means that once an answer is selected on the CAT it cannot be changed.

The Mathematics section of OAR contains 20 to 30 multiple-choice questions assess content in the following areas:

- Number Sense and Operations
- Algebra
- Data, Statistics, And Probability
- Geometry and Measurement

You have 40 minutes to complete the first (Math) section of the test. The OAR test does not allow you to use a calculator, but a few formulas are provided for some questions.

## The Absolute Best Book **to Ace the OAR Math **Test

**Best resources to prepare for the OAR Mathematics test**

There are many prestigious OAR books and study guides that can help you prepare for the test. Most major test preparation companies have some offerings for the OAR, and the short-listing of the best book ends up being a puzzling phenomenon. There are also many online OAR courses.

If you just started preparing for the OAR course or test and you need a perfect OAR prep book, then ** OAR Math Prep 2020-2021: The Most Comprehensive Review and Ultimate Guide to the OAR Math Test** is a perfect and comprehensive prep book for you to master all OAR topics being tested right from scratch. It will help you brush up your math skills, boost your confidence, and do your best to succeed on the OAR Test.

This one is an alternative book: *OAR Math Prep 2020: A Comprehensive Review and Ultimate Guide to the OAR Math Test*

You can also use this great prep book:

If you just need a OAR workbook to review the math topics on the test and measure your exam readiness, then try: “*Comprehensive OAR Math Practice Book 2020 – 2021: Complete Coverage of all OAR Math Concepts + 2 Full-Length OAR Math Tests*”

If you think you are good at math and just need some OAR practice tests, then this book is a perfect OAR test book for you:

You can also use our FREE **OAR** (ASTB) worksheets: *OAR (ASTB) Math Worksheets*

Have a look at our FREE OAR (ASTB) Worksheets to assess your knowledge of Mathematics, find your weak areas, and learn from your mistakes.

**Looking for the best resources to help you or your student succeed on the OAR test?**