12) Billy has a notebook to store his postcard collection. Each page is broken into sixths. If there are 20 pages in the book, how many postcards can the book hold?

Billy's notebook can hold a total of 120 postcards! Each page contains 6 sections, and with 20 pages, the calculation goes like this: 6 (sections per page) multiplied by 20 (pages) equals 120. So, let the postcard collection thrive in that beautifully organized notebook! When storing postcards, it's often beneficial to use protective sleeves to prevent wear and tear, ensuring they remain in pristine condition. Common mistakes include overstuffing pages or using pens that can bleed through, so stick to non-bleeding ink and give each postcard the space it deserves!