I created this 2-digit addition and subtraction practice worksheet pack for upper grades 3-5 to use at back to school time/Fall to warm up and practice their 2-digit additon and subtraction strategies. I also have created a similar pack that is Spring-themed that I will use with my 2nd graders when we learn this skill later in the year. There are 3 sheets included in this pack--addition, subtraction and mixed. These can be used for guided or independent practice, seatwork/extra practice during math centers, small groups, homework, morning work, etc. Enjoy!