This pack has 4 different sets and each set has 12 activity cards for 48 cards total for a lot of adding to 20 practice.
The first 2 sets only have single digit numbers (8+5, 9+2, etc.) and the second 2 sets also incorporate 2 digit numbers (12+4, 18+1, etc.) for differentiation.
The recording sheet for students to copy their answers on comes in 2 levels so you can give students all the cards or a smaller set to differentiate for lower learners. You can also mix and match the sets to challenge higher students or create more centers for a lot of review.
An answer key is included so all you have to do is write each answer for the set you're using on a bottle cap with a permanent marker and put those caps in a baggie with the cards to create the center. :)
I also include teacher directions and student friendly directions for you to put in the center if you want it to be an independent center.
Bottle caps are just super fun! I am excited to add a bunch of these to the growing bundle I mentioned above. To see how I use them for phonics, check out: Bottle Cap CVC Word Building Centers
(I make them for the other phonics sounds too! :))