Practice makes perfect! This worksheet will help students practice mental math percentages as they calculate 18 percents. Students can perfect their skills with using mental math percents by completing these problems that include finding 1%, 2%, 5%, 10%, 20%, 25%, 30%, 40%, 50%, and more! The worksheet can be printed in landscape (to fit into a composition book) or portrait orientation. An answer key is included! Do you want to magically make this worksheet more ENGAGING & SELF-CHECKING?? Gr