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This is a set of 25 numbered (and repeated un-numbered) task cards with 25 different 1st grade math problems, aligned to Common Core 1.OA.B.4, New York NY-1.OA.4 "New York State Next Generation Mathematics Learning Standards", and various similar State standards. These problems require the student to answer various problems relating the fact that a subtraction problem is an unknown-addend problem as well. An answer key, as well as a blank test sheet, are also provided, as well as two posters for the New York standard.
These task cards are labeled as New York NY-1.OA.4, with a cover sheet and the standard on each numbered card. If you would like these labeled as various other State standards or unlabeled, I have these same task cards in these formats in other listings in my shop.
See this same item labeled as Common Core, other State standards, and unlabeled:
Please let me know if you have any questions or suggestions - I'm always creating!