ASVAB Mathematics Knowledge practice questions.
Algebra, geometry, basic number theory.
This page has 3 free ASVAB Mathematics Knowledge (MK) practice questions, each with a worked explanation. Mathematics Knowledge (MK) is one of the four AFQT subtests. Algebra, geometry, basic number theory. These 3 items are part of the calibration sample (v0) — they are practice questions, not a full-length ASVAB practice test. Each item carries three pre-generated explanation phrasings; the runtime serves a deterministic rotation to keep cost flat. AI-explained answer (verified by reviewer queue).
If x + 7 = 19, what is x?
Where this score goes
Which line scores MK moves.
Your Mathematics Knowledge standard score feeds 21 published line-score composites across 6 branches, on top of the AFQT. Each branch below publishes its own formulas — the codes are the ones whose formula consumes MK.
- Army ASVAB score requirements — 5 of 10 named composites: CL, EL, FA, GM, ST · verified 2026-08-02 against officialasvab.com (DoD ASVAB Program — Military Jobs composite table)
- Navy ASVAB score requirements — 7 of 9 named composites: AFQT, EL, BEE, ENG, ADM, HM, NUC · verified 2026-08-02 against officialasvab.com (DoD ASVAB Program — Military Jobs composite table)
- Marines ASVAB score requirements — 2 of 4 named composites: EL, CL · verified 2026-08-02 against officialasvab.com (DoD ASVAB Program — Military Jobs composite table)
- Air Force ASVAB score requirements — 2 of 4 named composites: A, E · verified 2026-08-02 against officialasvab.com (DoD ASVAB Program — Military Jobs composite table)
- Space Force ASVAB score requirements — 2 of 4 named composites: A, E · verified 2026-07-23 against airforce.com (ASVAB and Air Force composites)
- Coast Guard ASVAB score requirements — 3 of 7 published rating combinations: MK+EI+GS, VE+MK+GS+AR, AR+MK+EI+GS · verified 2026-08-02 against COMDTINST M1500.10C, Enclosure (3) — Rating Requirements
Put real numbers through the formulas with the ASVAB line score calculator, check your percentile with the AFQT calculator, estimate where practice performance lands with the ASVAB score predictor, or compare every branch’s published minimums on the branch ASVAB requirements index.
Independent test-prep — not affiliated with DoD or the ASVAB program. See officialasvab.com for the test program.