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.D.8 and various similar State standards. These problems require the student to determine the missing number for basic three-digit addition and subtraction problems, up to 20. An answer key, as well as a blank test sheet, are also provided, as well as two posters for the Common Core standard.
The task cards are as follows:
#1-5 - greatest number <10
#6-20 - greatest number 5-15
#21-25 - greatest number 16-20
The task cards tend to slowly get more difficult as you go through them.
These task cards are labeled as Common Core 1.OA.D.8, 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 various other State standards and unlabeled:
EMOJI 1st Grade Math Problems Task Cards Flash Cards - Florida MAFS.1.OA.4.8
EMOJI 1st Grade Math Problems Task Cards Flash Cards - Georgia MGSE1.OA.8
EMOJI 1st Grade Math Problems Task Cards Worksheets - Texas 1.3F
EMOJI 1st Grade Math Problems Task Cards Flash Cards - New York NY-1.OA.8
EMOJI 1st Grade Math Problems Task Cards Flash Cards - North Carolina NC.1.NBT.3
EMOJI 1st Grade Math Problems Task Cards-Missing Number 1-20-Common Core Aligned
Please let me know if you have any questions or suggestions - I'm always creating!