Have you ever been doing physics homework, or multivariable calculus homework and needed to cross two vectors that you would rather not cross by hand? This skill is here to aid you in this pursuit, or even to check your answer. There are many reasons why you might want to do this calculation with Alexa. The cross product is not a function on most calculators, and getting out a computer takes time and can be distracting when working on homework. This skill helps mitigate these problems with a voice interface. Note that the skill only works for positive integers.