These task cards align with CCSS 1.MD.3. There are 30 QR task codes in this file. There are 26 (A - Z) regular task cards and 4 (1*, 2*, 3*, and 4*) challenge task cards. All task cards have a QR code so that students can check their work. These task cards are meant to be done with minimal teacher support and used once the skill has been taught for extra practice and review.