FREE OAR vs ASTB Guide 2026: Which Navy Test?
Video
A ship stores 180 bottles of water for 12 sailors on a short training trip. If each sailor receives the same number of bottles, how many bottles does each sailor get?
Oar Math Skills
Question · Easy
Gears: which way and how fast?
Short
Should You Retake the OAR? Navy Rules and Decision Guide for 2026
Decide whether an OAR retake is worth the risk. Learn the Navy's three-attempt limit, 30- and 90-day waits, latest-score rule, and a practical readiness test.
Blog
Order of operations (PEMDAS) on the no-calculator MST
Arithmetic
Flashcard
A candidate drives 150 miles to a testing center in 3 hours. What was the candidate's average speed?
Introduction to the OAR
About the OAR
Study guide
Cheat sheet
Solve for x: 4x - 7 = 21
Navy OAR Exam Prep (2026) | FREE 60-Lesson Study Playlist
Lessons in order on YouTube
Video course
FREE OAR Study Guide 2026: Officer Aptitude Rating (ASTB-E)
Converting between fractions, decimals, and percents quickly
A rectangular storage room is 8 feet long and 5 feet wide. What is its area?
Free 2026 decision guide: OAR-only vs full ASTB-E by designator, score scales, most-recent score rule, attempt risk, and prep paths for Navy officer applicants.
What is the mean of the numbers 42, 48, 50, 50, and 60?
Line up, find the middle
A current 2026 OAR guide built from Navy Medicine and MyNavyHR sources: adaptive format, program-specific score requirements, study priorities, test-day decisions, and retake risk.
Rules for operating with signed (negative) numbers
A supply list shows that 25% of 200 items are batteries. How many batteries are on the list?
Who Takes the OAR and Why
The sum of two consecutive integers is 47. What is the larger integer?
Question · Medium
Estimation as an MST answer-elimination tool
One printer can produce 180 forms in 6 minutes at a constant rate. At that same rate, how many forms can it produce in 15 minutes?
A circle has a diameter of 10 inches. Using pi approximately 3.14, what is its circumference?
Small gear fast, big gear slow
Solving a one-variable linear equation
Algebra
A candidate's five practice scores are 72, 68, 84, 76, and 90. What is the median score?
Study Plan and Test-Day Strategy
Solve for x: 2(x - 3) + 5 = 17
Rule for flipping an inequality sign
A map uses the scale 1 inch = 12 miles. If two points are 3.5 inches apart on the map, what is the actual distance?
A rectangular fuel container is 4 feet long, 3 feet wide, and 2 feet high. What is its volume?
Laws of exponents
A bag contains 5 red markers, 3 blue markers, and 2 green markers. If one marker is chosen at random, what is the probability that it is blue?
Math Skills Test (MST)
Arithmetic Fundamentals
Three notebooks and two pens cost $11 total. If each notebook costs $2 and all pens cost the same amount, how much does one pen cost?
The quadratic formula and when to use it
A study schedule increases from 20 hours per week to 25 hours per week. What is the percent increase?
A package contains 7 booklets. Math booklets cost $10 each and mechanical booklets cost $14 each. If the package costs $86 total, how many mechanical booklets are in the package?
Question · Hard
FOIL for multiplying two binomials
An L-shaped floor is made by removing a 3-foot by 2-foot rectangle from one corner of a 10-foot by 7-foot rectangle. What is the area of the remaining floor?
Fractions, Ratios, and Proportions
A candidate's first three math quiz scores are 70, 80, and 90. The final practice exam counts twice as much as each quiz. If the overall weighted average is 84, what was the final exam score?
Setting up a system of two equations from a word problem
Loading more…
