This can be used as a center where partner's compete in rounds of 9 problems. If you want to take the dunk contest to the next level, a classroom bracket is provided! Over the course of a week, students can compete against each other (best of 9 dunks!!!) and move their way through the class bracket. There are awards provided in the pack. An answer key is provided, in case students would like to "challenge" their partner's answer. This set includes a deck of 26 (a-z) problems for both addition and subtraction.
This product is a part of my complete Instant Math Bundle. The Instant Math Bundle contains 42 Instant Math acvitities.
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I highly suggest my 2nd Grade Winter Common Core Pack!
My Common Core ELA Activities will save you lots of time!