These are spring-themed addition color-by-number/code worksheets to supplement your lessons. It's a fun mystery picture activity that can make learning more fun. It covers 2-digit plus 1-digit, double-digit, and 3-digit addition. You can use this as a review, homework, enrichment or extension activity, math center, station, or practice for your kids in the 2nd, 3rd, or 4th grades. How to UseThis is a spring addition mystery picture activity. First, let your students answer all the problems on t