Here are four different levels for practicing adding and subtracting within 100. The purple cards are not story problems but do add and subtract within 100 without regrouping. The blue cards are mostly story problems for adding and subtracting without regrouping. The green cards are story problems for adding and subtracting with regrouping. The red cards are the challenge cards that will sure push your students to a deeper understanding. This pack comes with 12 different task cards for each level, a student record sheet, and an answer key. Thank you for your download and don't forget to leave feedback! happy teaching!