Explore all ten ASVAB subtests
ASVAB Online Center
Review ASVAB subtests with topic lessons, practice, and study paths. Explore Math, Verbal, Science and Technical, and Spatial preparation resources.
Explore the ASVAB Subtest Study Online Centers
Choose a focused Online Center for topic explanations, Quick Review, and original practice checks.
General Science (GS)
Review biology, earth and space science, chemistry, and physics.
Open study Online Center →
Arithmetic Reasoning (AR)
Solve word problems with operations, ratios, rates, and percents.
Open study Online Center →
Word Knowledge (WK)
Use context and word parts to identify precise word meaning.
Study word flashcards →
Paragraph Comprehension (PC)
Find main ideas, details, inference, and passage evidence.
Open study Online Center →
Mathematics Knowledge (MK)
Review algebra, geometry, formulas, and mathematical principles.
Open study Online Center →
Electronics Information (EI)
Study circuits, current, voltage, resistance, and components.
Open study Online Center →
Auto Information (AI)
Recognize common vehicle systems, components, and maintenance.
Open study Online Center →
Shop Information (SI)
Identify tools, materials, measurements, and workshop practices.
Open study Online Center →
Mechanical Comprehension (MC)
Apply force, motion, work, pressure, and simple-machine principles.
Open study Online Center →
Assembling Objects (AO)
Visualize how parts fit, rotate, and change orientation.
Open study Online Center →
Jump into ASVAB
See it. Understand it. Try it.
ASVAB Quick Review organizes important ideas by subtest. Choose one area, refresh the key idea, and try an original example in its study Online Center.
Six ways into ASVAB study
Each Online Center pairs topic review with a chance to try the idea.
Join students who study with a clearer path
This ASVAB study center connects ten focused subtest Online Centers, topic reviews, original practice checks, and math resources so students can choose a clear next step.
This is an unofficial ASVAB preparation resource from the Effortless Math team. The official ASVAB program provides authoritative information about formats and testing.
Start With A Practice Test
Start with official sample questions or a focused practice check. Use what feels unfamiliar to choose an ASVAB subtest Online Center, then review the topics that need more work.
Try a sample first
Use official examples to notice which question formats feel familiar.
Know what is tested
Check the subtests and format used by your testing program.
Choose one study Online Center
Select a subtest that supports your goals or needs more practice.
Review and practice
Use Quick Review and original practice checks, then revisit missed ideas.
ASVAB Snapshot
aptitude domains
listed subtests
math subtests used in AFQT
updated study path
ASVAB Test Outline
Use this outline to find a subtest and move directly to its study Online Center.
General Science (GS)
The General Science subtest samples foundational biology, earth science, chemistry, and physics knowledge. Review the core idea in each topic, then practice explaining what the evidence supports.
Topics covered
- Life science
- Earth and space science
- Physical science
- Scientific reasoning
Arithmetic Reasoning (AR)
Solve everyday math word problems by choosing the right operation, setting up the relationship, and checking whether the answer makes sense.
Topics covered
- Translate words into operations
- Fractions, ratios, and proportions
- Rates, time, and distance
- Percent and money problems
Word Knowledge (WK)
The Word Knowledge subtest asks you to identify precise word meanings and close synonyms. Review word parts, context, tone, and shades of meaning, then practice with focused vocabulary flashcards.
Topics covered
- Prefixes, roots, and suffixes
- Context clues
- Synonyms and precision
- Multiple meanings
Paragraph Comprehension (PC)
Read short passages carefully, identify what the writer states, and separate direct evidence from a tempting guess.
Topics covered
- Find the main idea
- Use only passage evidence
- Read references in context
- Notice contrast and cause
Mathematics Knowledge (MK)
Review the math principles and formulas used to solve direct questions in algebra, geometry, number operations, and measurement.
Topics covered
- Work with signed numbers and order of operations
- Solve equations
- Use geometry formulas
- Read graphs and coordinate pairs
Electronics Information (EI)
Build a clear foundation in current, voltage, resistance, circuits, and common electronic components.
Topics covered
- Voltage, current, and resistance
- Ohm’s law
- Series and parallel circuits
- Recognize components
Auto Information (AI)
Review the purpose of major vehicle systems and how their common parts work together.
Topics covered
- Engine and fuel system
- Cooling and lubrication
- Electrical and starting systems
- Brakes, tires, and safety
Shop Information (SI)
Recognize common hand tools, measuring tools, workshop practices, and the jobs each tool is designed to do.
Topics covered
- Match the tool to the task
- Measure carefully
- Fasteners and materials
- Safe work habits
Mechanical Comprehension (MC)
Use basic physical principles to reason about motion, force, work, simple machines, pressure, and mechanical advantage.
Topics covered
- Force and motion
- Levers and mechanical advantage
- Gears, pulleys, and wheels
- Pressure, fluids, and work
Assembling Objects (AO)
The Assembling Objects subtest asks you to visualize how pieces fit together. Track distinctive features, preserve the relationships between edges, and check the full outline before choosing.
Topics covered
- Track the edges
- Rotate without reflecting
- Match unique features
- Check the whole silhouette
ASVAB Quick Review Topics
Open a focused Quick Review for one of the ten ASVAB subtests, then try original practice checks in its Online Center.
ASVAB Skill Practice Checks
Choose a subtest to try original practice examples, check your understanding, and review the reasoning.
General Science (GS)
The General Science subtest samples foundational biology, earth science, chemistry, and physics knowledge. Review the core idea in each topic, then practice explaining what the evidence supports.
Start practice →
Arithmetic Reasoning (AR)
Solve everyday math word problems by choosing the right operation, setting up the relationship, and checking whether the answer makes sense.
Start practice →
Word Knowledge (WK)
The Word Knowledge subtest asks you to identify precise word meanings and close synonyms. Review word parts, context, tone, and shades of meaning, then practice with focused vocabulary flashcards.
Start practice →
Paragraph Comprehension (PC)
Read short passages carefully, identify what the writer states, and separate direct evidence from a tempting guess.
Start practice →
Mathematics Knowledge (MK)
Review the math principles and formulas used to solve direct questions in algebra, geometry, number operations, and measurement.
Start practice →
Electronics Information (EI)
Build a clear foundation in current, voltage, resistance, circuits, and common electronic components.
Start practice →
Auto Information (AI)
Review the purpose of major vehicle systems and how their common parts work together.
Start practice →
Shop Information (SI)
Recognize common hand tools, measuring tools, workshop practices, and the jobs each tool is designed to do.
Start practice →
Mechanical Comprehension (MC)
Use basic physical principles to reason about motion, force, work, simple machines, pressure, and mechanical advantage.
Start practice →
Assembling Objects (AO)
The Assembling Objects subtest asks you to visualize how pieces fit together. Track distinctive features, preserve the relationships between edges, and check the full outline before choosing.
Start practice →
ASVAB Topics: Learn, Practice, and Quick Review
Choose a subtest, open its topic explanations, and continue to Quick Review or an original practice check.
10 ASVAB subtests
General Science (GS)
Arithmetic Reasoning (AR)
Word Knowledge (WK)
Paragraph Comprehension (PC)
Mathematics Knowledge (MK)
Electronics Information (EI)
Auto Information (AI)
Shop Information (SI)
Mechanical Comprehension (MC)
ASVAB Skills Worth Reviewing
Use these common challenge areas to choose one focused ASVAB Online Center and decide what to review next.
Multi-step math problems
Set up the relationship before calculating, then check whether the answer fits the situation.
Word meaning in context
Compare close synonyms and use word parts and sentence clues to choose the best fit.
Passage evidence
Separate what a passage states from what an answer merely suggests.
Forces and mechanisms
Track one force or motion relationship at a time, then check the full system.
Spatial rotation
Rotate the whole object mentally without reversing its parts like a mirror.
Choose Your ASVAB Prep Tool
Choose a focused study Online Center, Quick Review, practice check, or official sample question to match your next step.
Subtest Online Centers
Open topic explanations and examples for one ASVAB area.
Practice checks
Try original questions and review the reasoning.
ASVAB Math Practice
Build arithmetic and mathematics knowledge in the dedicated center.
Official samples
See the sample formats published by the official ASVAB program.
ASVAB Practice Paths
Follow a balanced route through verbal, math, science, technical, and spatial subtests.
Verbal Path
Build vocabulary and careful reading.
- Word Knowledge
- Paragraph Comprehension
Math Path
Practice applied reasoning and core mathematical rules.
- Arithmetic Reasoning
- Mathematics Knowledge
Technical and Spatial Path
Connect scientific ideas, tools, systems, mechanisms, and visual reasoning.
- General Science
- Electronics
- Auto & Shop
- Mechanical
- Assembling Objects
ASVAB Math Full Study Guide
A focused resource for Arithmetic Reasoning and Mathematics Knowledge, with explanations and practice for ASVAB math preparation.
- Supports the two ASVAB math subtests
- Pairs with the Arithmetic Reasoning and Mathematics Knowledge Online Centers
- Use topic review before mixed practice
- A focused math resource within the broader ASVAB study plan
Arithmetic Reasoning
Work through quantitative relationships and multi-step word problems.
Mathematics Knowledge
Review algebra, geometry, formulas, and mathematical principles.
Targeted practice
Build confidence with explanations and ASVAB math practice.
Test-day bridge
Connect math lessons to both ASVAB math subtest Online Centers.
How to use it
- Read one lesson and note the worked example.
- Practice the same skill in an ASVAB Math Online Center.
- Review a related ASVAB math flashcard.
- Try mixed ASVAB math questions and revisit each miss.
Choose The Right ASVAB Study Guide
Choose a focused ASVAB study guide, then use the free subtest Online Centers and official sample questions to keep practicing.
ASVAB Math Full Study Guide: Comprehensive Review + Practice Tests + Online Resources
Focused math review
Supports Arithmetic Reasoning and Mathematics Knowledge.
ASVAB Math Practice Workbook: The Most Comprehensive Review for the Math Section of the ASVAB Test
Math skill drills
Use for focused math practice after reviewing the topic.
ASVAB General Science for Beginners
Science foundations
Build core science knowledge with lessons and guided practice.
ASVAB Math Test Prep Bundle: Study Guide + Practice Workbook + Practice Tests
Complete math library
Combine a study guide, workbook, and practice tests for the two math subtests.
Prepare for the ASVAB Math Test in 7 Days: A Quick Study Guide with Two Full-Length ASVAB Math Practice Tests
Focused quick review
Use a short review plan to prepare for ASVAB math practice.
4-Week ASVAB Study Roadmap
Use a steady month-long plan to sample the test, strengthen priority topics, and revisit missed questions.
Diagnose and choose a focus
Try official samples, then select two priority subtests.
Build foundations
Review key ideas in your priority verbal and math Online Centers.
Connect related skills
Add science, technical, or spatial review to your study mix.
Practice and confirm
Revisit missed skills and confirm the testing program and format.
ASVAB FAQ
What subjects are on the ASVAB?
The ASVAB includes subtests across verbal, math, science and technical, and spatial areas. The combination depends on your testing program.
Which ASVAB subtests count toward the AFQT?
Arithmetic Reasoning, Mathematics Knowledge, Word Knowledge, and Paragraph Comprehension contribute to the AFQT score.
Are these official ASVAB questions?
No. The study Online Centers provide original practice examples. Use the official ASVAB site for authoritative sample questions and testing information.
Do all ASVAB programs use the same subtests?
No. Subtests can vary by testing program. Check official information for the format you will take.
How should I study for the ASVAB?
Start with sample questions, identify unfamiliar areas, and use one focused Online Center at a time. Return to missed ideas after practice.
Where can I review ASVAB math?
Use the Arithmetic Reasoning and Mathematics Knowledge Online Centers for focused explanations and practice.
Related Online Centers
Make This Your ASVAB Starting Point
Choose one subtest, work through its Quick Review, and follow the next step that fits your study plan.
Keep the two ASVAB math paths distinct
Arithmetic Reasoning focuses on math in word problems. Mathematics Knowledge reviews mathematical concepts. Use the official ASVAB subtest descriptions to choose your next study area. Our materials are independent preparation, not official ASVAB questions.
A USEFUL NEXT STEP
ASVAB: study questions
What subjects are on the ASVAB?
ASVAB subtests cover Verbal, Math, Science and Technical, and Spatial skills. Auto Information and Shop Information are separate computer subtests but combined in the paper-and-pencil administration.
Official source ↗Which ASVAB subtests count toward the AFQT?
The AFQT uses Arithmetic Reasoning, Mathematics Knowledge, Word Knowledge, and Paragraph Comprehension. The other ASVAB subtests help measure additional aptitudes and inform military job qualification.
Official source ↗Are these official ASVAB preparation materials?
Effortless Math is an independent publisher. Its original materials are preparation resources, and practice results are study feedback rather than official scores. Use the test provider’s website for registration, policies, and official practice.
Official source ↗Resources from Effortless Math · Editorial standards · Test details checked October 5, 2026