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Adding and Subtracting Within 20

Grade 1 Common Core Math Standard

Aligned To Common Core Standard:

Grade 1 Operations- OA.6

AnswersAnswer Keys

View Answer Keys- All the answer keys in one file.

Extra Resources

Guided Lessons

The prompts used here could come from a variety of means.

Practice Worksheets

These will include all forms of data because you see that on National exams.