This set of ‘Task Cards’ are addition and subtraction. In total there are 24 cards. 12 are addition and 12 are subtraction. I have also supplied a worksheet to complete the task cards on. It is designed to be printed double sided. On the worksheet there is a number in the top left corner to answer the questions. Personally, I put the number on the back of the task card when printed and laminated and whatever number is on the card is the box number for the answer.
Hope these work great for you