The NAPT is 80 questions long, you need 50 to pass. If you were close to the NUC line score on the ASVAB but did not reach it, you will need to get 50 + the difference between your line score and the score required to qualify.
You will be given a pencil, a calculator, the test, and a paper to put your answers on. It is multiple choice, so answering a question means filling in a little square.
The questions are algebra, geometry, basic chemistry, and basic physics.
On my test, there was no trigonometry used, but you should know the Pythagorean, but solving algebraic equations, finding areas and volumes, sums of interior angles, and names and types of polygons.
The chemistry portion covered basic knowledge of atom construction and numbering, pH levels, chemical reaction balancing, and counting atoms in a molecule.
For physics, you should have an understanding of momentum and the conservation of momentum, how leverage and mechanical advantage works, and solving time, distance, velocity, and acceleration equations.