Open the “North Pole Vault” with math! This 10-page, black-and-white worksheet pack turns your class into codebreakers who unlock ten vault “locks” using Grade 4 skills in factors and multiples, long division, number patterns, one-step equations, and area/perimeter. Each page includes 10 problems, a short vault-themed story hook, and a simple line-art illustration prompt—perfect for winter math centers, test prep, or engaging December lessons. When students solve all ten pages, the vault reveals