The ten-minute IQ test is a timed test consisting of 40 questions assessing your verbal, math, and problem-solving skills. This test measures crystallized intelligence, which is the mental skills that are acquired through education, experience, and exposure. Crystallized intelligence is the accumulated knowledge of content and procedural skills (such as how to use the multiplication table). The ten-minute test is slightly speeded relative to longer IQ tests, so it is sensitive to processing speed and you will need to pay close attention to the time limit if you want to ensure an accurate score.