This math topic focuses on calculating the full or original value of a number based on a given percentage. Specifically, the problems involve determining what number a certain percentage (mostly in 10% increments, with examples involving 20% and 30%) represents. Each question presents a scenario such as "3 is 10% of a number" and requires finding the base from which the percentage is derived. This is an introductory level practice, primarily aimed at enhancing understanding of basic percentage calculations and their applications.

Work on practice problems directly here, or download the printable pdf worksheet to practice offline.