Use this mini-assessment formatively or summatively to guide instruction of common core standard 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.
Simply print and let students complete. I score these 1-4 and use this information to guide flexible math groupings. These problems are appropriate for the first instructional period of second grade, with a 1 indicating 'not meeting standard', 2 indicating 'working towards standard', 3 indicating 'meeting standard' and 4 indicating 'exceeding standard.' The problems increase in difficulty, allowing you to appropriately scaffold instruction.
Editable Microsoft word file allows you to numbers to reuse assessment/ increase/decrease difficulty.