This packet is a great assessment or review activity for CCS 2.NBT.5.
CCS.2.NBT.5: Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction
This packet contains 16 two-digit problems which assess CCS 2.NBT.5 with both addition AND subtraction WITH REGROUPING.
Check out my other assessments for the Numbers and Operations in Base Ten Strands:
2.NBT.1 PLACE VALUE
2.NBT.2 SKIP COUNTING
2.NBT.3 READING AND WRITING NUMBERS
2.NBT.4 COMPARING NUMBERS
2.NBT.6 ADDING UP TO 4 NUMBERS
2.NBT.7 ADDITION ANS SUBTRACTION WITH REGROUPING
NUMBERS & OPERATIONS IN BASE TEN BUNDLE