Here's an adorable set of equation cards that will have students adding or subtracting 'tens' within 120. 24 cards, 12 for addition, 12 for subtraction.
Make this self-correcting by adding colored dots or stickers to the back of each card, right behind the correct response. Then laminate.
Makes a great math center or have students work in Kagan or cooperative work centers.
Thanks for stopping by!