Missing Numbers (Addition) Worksheet by Serene Siow Language UND Assignments 26 classrooms used this worksheet 1 1 3 3 4 5 3 0 4 0 0 4 0 0 4 1 9 5 1 2 0 1 5 1 2 2 3 4 2 4 1 1 8 0 1 3 3 2 4 Use This Worksheet