Kayla gets on the elevator on the ground floor. She goes down 2 floors, up 5 floors, down 1 floor, up 3 floors, down 5 floors, and up 6 floors. What floor is she on?

6th floor

Step-by-step explanation:

Starting on the ground floor, we will reference this point as the 0th floor. From there she goes:

down 2 floors (0 - 2) | -2 |

up 5 floors (-2 + 5) | 3 |

down 1 floor (3 - 1) | 2 |

up 3 floors (2 + 3) | 5 |

down 5 floors (5 - 5) | 0 |

and up 6 floors (0 + 6) | 6 |

Therefore... in the end she lands on the 6th floor