What I Know (Pre-test) To begin with this module, you need to answer this pre-test to check whether you already have the knowledge about the topic. Directions: Read, analyze and answer each item on a separate sheet of paper. 1. What is the correct integer to represent 150 meter below sea level? A. -150 meter B. 150 meter C. +150 meter D.510 meter 2. What is the correct integer represented by this situation going up twelve floors of a building? A.-12 floors B. 12 floors C.-21 floors D. 41 floors 3. What is the opposite of this integer +45 ? A. +45 B. +54 C.-45 D. -54 5. What is the set of integers greater than -5 and less than +4?