3rd Grade Math Activity Pack: Rounding, Addition & SubtractionThe 3rd Grade Math Activity packet covers all of the 3rd grade Numbers and Base Ten Common Core standards including rounding, addition, subtraction and multiples of ten. This packet includes:- At least 5 problem sheets for each of the following standards- 3.NBT.1, 3.NBT.2, 3.NBT3- Over 50+ activity sheets.- Assorted problems types to meet the needs of the standards and state assessments including: Constructed Response, Word probl