These addition flash cards are aligned to the new Common Core Standards for first grade. Sums are included on the back in small print, so they do not show through when practicing facts. All addition facts from a ten table are included (from 0 + 0 through 10 + 10), plus all reversals. Simply print double sided on cardstock (I use yellow), and you are good to go. Print a copy for each student in your class to send home, or use both at home and at school.
If you like these, check out my practice addition quizzes, also aligned to the Common Core Standards for first grade math.