I'll be Johnny-"Well, to be frank, there are many differences, teach. Let me explain it to you. You see, if the number is 60, the difference is 120, because -60 +60 is zero, but then you have to jump another 60 to get to +60. That being said, if we're talkin 300, the difference is 600 for essentially the same reason I just described, that is to say you jump ahead 300 to get to zero, then you proceed another 30o to get to 300. But if we."....(principal take Johnny away).
Here's one combining math with prisons "What did the two thieves get for stealing the calendar off the store wall? "They each got 6 months"