Students really enjoy this addition and subtraction activity! Support students' learning with an engaging learning activity. Students solve the expressions and then line up the sum or difference with the correct expression. This can be utilized to support a lesson and/or during math workshop. The letter key allows the teacher to quickly glance at the student's work to check for accuracy. The mystery square can be solved individually, with a partner, or in small groups.
Please note: Answer key is the order of the letters prior to cutting. Keep an uncut copy to refer to when checking students' work for accuracy.