Many of the questions on the Wonderlic test boil down to basic mathematics. Some of the questions involve simple math equations, while others are written as word problems. Luckily these math questions are fairly simple when you strip away all of the "flair" and unnecessary text. Many libraries have study guides for math, and if you look online you can find many different websites that have practice math quizzes that score your test immediately after you complete it.
Other questions are word problems that require you to decide which of three particular words are not like the other two. You can exercise your brain by doing basic memory exercises that help you quickly recognize which word is out of place, or in which sequence numbers or letters are supposed to go.
Take practice tests. You can find practice tests online for just about any and every subject, many of them designed to check your answers immediately after you click "Finish." A few of these tests will even walk you through your incorrect answers to show you how to properly tackle the questions that you got wrong.