ASVAB Mathematics Knowledge · MK

ASVAB Mathematics Knowledge
Sample Questions

Practice original high-school mathematics questions covering algebra,
geometry, fractions, exponents, roots, equations, inequalities, functions, ratios,
and other core Mathematics Knowledge skills.

Mathematics Knowledge (MK) Practice

Mathematics Knowledge focuses on high-school math principles rather than long real-world word problems. Solve each problem carefully and select the best answer.

You can also practice with ASVAB sample questions and Arithmetic Reasoning sample questions.

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What is the value of 2⁴ × 2³?
Exponents

When multiplying powers with the same base, add the exponents: 2⁴ × 2³ = 2⁷ = 128.

What is √144?
Square Roots

Since 12 × 12 = 144, √144 = 12.

Solve for x: 3x + 5 = 20
Linear Equations

Subtract 5 from both sides: 3x = 15. Then divide by 3: x = 5.

Solve the inequality: 2x − 6 > 8
Inequalities

Add 6 to both sides: 2x > 14. Divide by 2: x > 7.

Which expression is equivalent to x² + 5x + 6?
Factoring

The numbers 2 and 3 multiply to 6 and add to 5, so x² + 5x + 6 = (x + 2)(x + 3).

If a ≠ 5, simplify (a² − 25) ÷ (a − 5).
Algebraic Simplification

Factor the numerator: a² − 25 = (a − 5)(a + 5). Cancel a − 5 to get a + 5.

What is 3/4 + 5/8?
Fractions

Convert 3/4 to 6/8. Then 6/8 + 5/8 = 11/8 = 1 3/8.

Evaluate: 6 + 3(8 − 5)²
Order of Operations

First 8 − 5 = 3. Then 3² = 9. Multiply 3 × 9 = 27, and add 6 to get 33.

Which ratio is equivalent to 42:14?
Ratios

Divide both terms by 14: 42:14 = 3:1.

What is 35% of 240?
Percent

Convert 35% to 0.35 and multiply: 0.35 × 240 = 84.

A triangle has a base of 12 inches and a height of 7 inches. What is its area?
Geometry: Area

Area of a triangle = 1/2 × base × height = 1/2 × 12 × 7 = 42 square inches.

A circle has a diameter of 10 cm. Using π ≈ 3.14, what is its circumference?
Geometry: Circumference

Circumference = πd = 3.14 × 10 = 31.4 cm.

A right triangle has legs of 6 and 8. What is the length of the hypotenuse?
Pythagorean Theorem

Use a² + b² = c²: 6² + 8² = 36 + 64 = 100, so c = 10.

A rectangular prism is 6 units long, 4 units wide, and 3 units high. What is its volume?
Volume

Volume = length × width × height = 6 × 4 × 3 = 72 cubic units.

Two angles are supplementary. If one angle measures 68°, what is the other angle?
Angles

Supplementary angles total 180°. So 180° − 68° = 112°.

What is the slope of the line through (2, 3) and (6, 11)?
Slope

Slope = (11 − 3) ÷ (6 − 2) = 8 ÷ 4 = 2.

Expand: (x + 4)(x − 2)
Polynomials

Multiply the terms: x² − 2x + 4x − 8 = x² + 2x − 8.

If f(x) = 2x² − 3, what is f(4)?
Functions

Substitute 4: f(4) = 2(4²) − 3 = 2(16) − 3 = 29.

If x + y = 12 and x − y = 4, what is x?
Systems of Equations

Add the equations: 2x = 16, so x = 8.

Which expression is equivalent to x⁻³, for x ≠ 0?
Negative Exponents

A negative exponent means take the reciprocal: x⁻³ = 1/x³.