You got me on that one, Kraco, but the point I was making was that he was trying to simulate the stealing of Hisoka's plate. True, Gon can easily simulate battles with Wing, but because he knows Wing does not have malicious intent, the experience he would be getting would not be a good reflection with a battle with Hisoka. You can say the same as Killua as Killua has no intention of hurting Gon in a malicious manner due to strong friendship.

Here's another way of thinking about it, though. Gon has lots of natural talent. If this was all mathematics class, he would have learned basic addition and subtraction from Wing. Now, he's decided he wants to take an exam that has both multiplication and division on it; he wants to experiment and innovate at the same time with the basics he's learned.

For the average person, this would be a dumb move as failure would imminent, but for someone as talented as Gon, taking the exam is a great way to apply the basic skills you've learned. Because of his talent, being able to figure out how to multiply immediately after learning addition would take less time than learning it through a classroom. The pressure of stress of the situation will let him adapt more. Plus, he can always give up with a small consequence and learn to readily adapt to a battle between Nen users. Basically, he gains familiarity with multiplication, division and the ability/mindset to deal with exam-writing conditions immediately.