Make the next
step make sense.
AptiStep is free ASVAB practice for the four subtests that make up the AFQT: Arithmetic Reasoning, Mathematics Knowledge, Word Knowledge and Paragraph Comprehension. Every question comes with a worked explanation you can follow without a calculator.
8-question skill check · Untimed · No account
A $60 jacket is 15% off.
What is the sale price?
10% is $6. Another 5% is $3.
$6 + $3 = $9The sale price is the original price minus the discount.
$60 − $9 = $51$9 is the saving. $51 is the price.
Understand the step.
Then try it yourself.
See how the app works.
Screens from the iPhone and iPad app. Tap one to enlarge.
Four subtests decide whether you can enlist.
The ASVAB has nine subtests, but your Armed Forces Qualification Test (AFQT) score comes from four of them: Arithmetic Reasoning, Mathematics Knowledge, Word Knowledge and Paragraph Comprehension. The AFQT is reported as a percentile from 1 to 99, and each branch sets the minimum it accepts. The other subtests feed the line scores that decide which jobs you qualify for. (Official ASVAB: Understanding scores, checked November 14, 2026.)
| Subtest | What it tests | Scored questions | Time |
|---|---|---|---|
| Arithmetic Reasoning | Math word problems | 15 | 55 minutes |
| Mathematics Knowledge | High school math rules and formulas | 15 | 31 minutes |
| Word Knowledge | Word meanings and synonyms | 15 | 9 minutes |
| Paragraph Comprehension | Reading short passages | 10 | 27 minutes |
Times exclude unscored tryout questions, which add extra time on some subtests. Source: Official ASVAB: The CAT-ASVAB, checked November 14, 2026. Full detail on how long the ASVAB is.
Pick the topic that costs you points.
- ASVAB math formulas you should know by heart
- ASVAB word problem types and the setup for each
- ASVAB geometry review
- ASVAB mental math: how to do the math without a calculator
- ASVAB vocabulary list: 120 useful words with meanings and examples
- Word roots, prefixes and suffixes for ASVAB Word Knowledge
- ASVAB Paragraph Comprehension strategies: read for evidence
- Context clues for ASVAB Word Knowledge and reading
Find a topic to work on today.
The free skill check samples all four subjects. Each answer comes with a worked explanation, and the finish screen points you to a lesson. Ready for more? Try the 20-question math practice test or verbal practice test.
Start the 8-question checkShort lessons with worked examples.
Fractions: make the pieces the same size.
A fraction names a number of equal-sized parts. Before adding or subtracting fractions, make sure the parts are the same size.
Open lesson Arithmetic Reasoning 6 minWord problems: turn the sentence into a plan.
Read for the quantity you need, not a keyword that seems to suggest an operation. A short plan prevents a long calculation in the wrong direction.
Open lesson Paragraph Comprehension 6 minReading: choose the answer the passage can support.
A statement can sound reasonable and still be the wrong answer. The useful question is: what does this particular passage let me conclude?
Open lessonOfficial facts. Original practice.
Test facts on this site (subtest times, score rules, retest waits, branch minimums) come from officialasvab.com and the branches' own recruiting sites, linked next to each claim with the date we checked it. If a branch does not publish a number, we say so instead of guessing. Every practice question and reading passage is written for AptiStep, and every math answer is checked by hand and by a second calculation.
AptiStep is an independent study site published by Certloom Learning. It does not predict AFQT percentiles or tell you whether you qualify; a recruiter confirms that.
Lessons and practice reviewed ; guides checked against the official ASVAB applicant FAQ and the sources listed on each page.
A place to keep building.
Free on iPhone and Android. The app adds a longer skills check, guided math steps, vocabulary and reading banks and a private notebook, with an optional one-time purchase for full access. The free lessons and practice on this site also work in any phone browser.
A short practice set cannot establish readiness or estimate an official AFQT percentile. Use your results to choose the next topic.
Read our approach →Frequently asked questions
Is AptiStep free?
Yes. Everything on this website is free with no account. The app is free to download on iPhone and Android, with an optional one-time in-app purchase (Full access) that unlocks the full lesson and question banks. There is no subscription.
What does AptiStep cover?
The four ASVAB subtests used for the AFQT: Arithmetic Reasoning, Mathematics Knowledge, Word Knowledge and Paragraph Comprehension. The guides also explain scores, test day and retests. The app does not teach the science, technical or spatial subtests.
Are these real ASVAB questions?
No. Real ASVAB items are not published. Every AptiStep question and passage is original, written to practice the same skills, with a worked explanation.
Can you use a calculator on the ASVAB?
No. The official ASVAB site says: "You cannot use a calculator when taking the ASVAB." That is why every AptiStep explanation is worked by hand. See mental math without a calculator.
What AFQT score do I need?
Each branch sets its own minimum. GoArmy.com, for example, says the Army requires a score of at least 31 to enlist. See minimum scores by branch for each figure with its official source, and confirm with a recruiter.
Does AptiStep predict my AFQT score?
No. The AFQT is a percentile from an official norm table, and practice accuracy cannot be turned into one. AptiStep shows which topics need work, not a predicted score.