There are three levels of this card game: mild. medium, and hot so the game is already differentiated for you.
Cut out each set of cards to create a deck of cards for students. They will then they will flip 2 cards at a time and add the two cards (or subtract, or multiply, or divide, whatever instruction you give). I sometimes have the kids roll a die and assign 1-add, 2-subtract, 3-multiply, 4- divide, 5- add, 6- subtract or something like that to incorporate all of the operations if I want to. Or say evens add odds subtract. Something like that.
This is a simple to explain card game for the kids to play instead of doing a worksheet.