Free ASVAB Practice Tests

  • Every Test is Unique
    Custom software and unique templates randomize questions, answers, and variables every time you take a new test. You'll never take the same test twice!
  • 1,557 Questions, Problems & Flash Cards
    Huge database of 668 multiple-choice questions, 135 math and algebra problems, and 754 flash cards to help you prepare for the ASVAB.
  • Detailed Solutions
    Get a question wrong? All questions and problems have detailed answer explanations so you can learn exactly how to get it right the next time.
  • Know You're Ready
    Want to know how you stack up? When you're done with a practice test you can compare your score to everyone else who has ever answered those questions.
  • Interactive Study Guide
    Detailed ASVAB study guide, MOS study guides, and line score study guides outline exactly what you should know to earn your target scores and customized tests and flash cards for each topic let you laser focus your limited study time.
  • Brand New for 2019
    ASVAB Test Bank has been completely redesigned for 2019 with all new questions, problems, and flash cards. And the redesign isn't done! Coming soon:
    More Content
    More questions, problems and flash cards
    Bookmarks
    Create a custom study guide with just the topics you're studying
    Score Estimator
    Custom estimate of your potential ASVAB score

    Plus printable tests, Q&A, and an ad-free upgrade. Have a suggestion? Please let us know what you want!

Take an ASVAB Practice Test

Sample Practice Test Questions

Mechanical Comprehension
If you have a gear train with three gears, the first with 24 teeth, the second with 16 teeth, and the third with 4 teeth, what is its mechanical advantage?
6

The mechanical advantage of a gear train is its gear ratio. The gear ratio (Vr) is the product of the gear ratios between the pairs of meshed gears. Let N represent the number of teeth for each gear:

Vr = \( \frac{N_1}{N_2} \) \( \frac{N_2}{N_3} \) \( \frac{N_3}{N_4} \) ... \( \frac{N_n}{N_{n+1}} \)

In this problem, we have three gears so the equation becomes:

Vr = \( \frac{N_1}{N_2} \) \( \frac{N_2}{N_3} \) = \( \frac{24}{16} \) \( \frac{16}{4} \) = \( \frac{24}{4} \) = 6

Mechanical Comprehension

A ramp is an example of which kind of simple machine?

inclined plane

An inclined plane is a simple machine that reduces the force needed to raise an object to a certain height. Work equals force x distance and, by increasing the distance that the object travels, an inclined plane reduces the force necessary to raise it to a particular height. In this case, the mechanical advantage is to make the task easier. An example of an inclined plane is a ramp.

Word Knowledge
Melee most nearly means:
brawl
A tumultuous fight among several people.
Automotive Information

Which of the following is the result of the air-fuel mixture exploding instead of burning?

detonation

Normal combustion in an engine is initiated by a spark plug and results in the complete burning of the air-fuel mixture. If combustion is initiated by a source other than the spark plug, by a hot spot in the cylinder or combustion chamber for example, pre-ignition results. Detonation results if the air-fuel mixture explodes instead of burning. Detonation can cause extremes in pressure in the combustion chamber leading to engine damage.

Word Knowledge
Advantageous most nearly means:
favorable
Giving an advantage.
Math Knowledge

Simplify (5a)(2ab) - (9a2)(3b).

-17a2b

To multiply monomials, multiply the coefficients (the numbers that come before the variables) of each term, add the exponents of like variables, and multiply the different variables together.

(5a)(2ab) - (9a2)(3b)
(5 x 2)(a x a x b) - (9 x 3)(a2 x b)
(10)(a1+1 x b) - (27)(a2b)
10a2b - 27a2b
-17a2b

Arithmetic Reasoning

Convert 0.0006095 to scientific notation.

6.095 x 10-4

A number in scientific notation has the format 0.000 x 10exponent. To convert to scientific notation, move the decimal point to the right or the left until the number is a decimal between 1 and 10. The exponent of the 10 is the number of places you moved the decimal point and is positive if you moved the decimal point to the left and negative if you moved it to the right:

0.0006095 in scientific notation is 6.095 x 10-4

Arithmetic Reasoning

If there were a total of 350 raffle tickets sold and you bought 24 tickets, what's the probability that you'll win the raffle?

7%

You have 24 out of the total of 350 raffle tickets sold so you have a (\( \frac{24}{350} \)) x 100 = \( \frac{24 \times 100}{350} \) = \( \frac{2400}{350} \) = 7% chance to win the raffle.

Arithmetic Reasoning

Solve for \( \frac{5!}{6!} \)

\( \frac{1}{6} \)

A factorial is the product of an integer and all the positive integers below it. To solve a fraction featuring factorials, expand the factorials and cancel out like numbers:

\( \frac{5!}{6!} \)
\( \frac{5 \times 4 \times 3 \times 2 \times 1}{6 \times 5 \times 4 \times 3 \times 2 \times 1} \)
\( \frac{1}{6} \)
\( \frac{1}{6} \)

General Science

The biosphere consists of which of the following?

all of these

The biosphere is the global ecological system integrating all living beings and their relationships. This includes their interactions with the lithosphere (the rigid outer part of the earth, consisting of the crust and upper mantle), hydrosphere (all surface water), and atmosphere (the envelope of gases surrounding the planet).