Practice Addition to 20 math facts in a fun and engaging way with color by number worksheets. With pages for summer, fall, winter and spring, you'll have coloring pages for the whole year while practicing math fact fluency. With added holiday color by code, you'll have even more choices for math centers, independent work, early finishers, or even for substitute teachers. This resource is great for Educators who are: *Looking for engaging addition to 20 fact fluency worksheets *Want to save time