Review the 4 operations with this fun mystery picture resource and its four Christmas characters: Santa Claus, Rudolph, a snowman and a gingerbread man.Each picture comes with 9 different worksheets, allowing you to differentiate: two sheets of mixed additions and subtractions with equations (EASY and HARD), two sheets of multiplications (EASY and HARD), two sheets of mixed multiplications and divisions with equations (EASY and HARD), two sheets of mixed 4 operations with equations (EASY and HAR