Using Pirate Addition to 12 Activity, students match addition equation cards with sum cards to build addition fact fluency skills.
This 2.NBT.9 Second Grade Common Core Lesson includes 2.NBT.9 Worksheets, 2.NBT.9 Activities, 2.NBT.9 Assessment, and 2.NBT.9 Poster.
This subtraction with 2-3-4-5 differences activity is a winter card sort for kindergarten and 1st grade. Children solve facts within 10, sort each card under its snowflake, and check with the answer key included.
In this 1.OA.8 First Grade Common Core Lesson, students find the unknown whole number in addition equations up to 20.



