Addition and Subtraction Clip Cards with facts up to 20! Buy as a bundle and save 25%! Common Core CCSS.Math.Content.1.OA.C.6 Add and subtract within 20, demonstrating fluency for addition and subtraction within 10. Over 400 Cards included! ****This product is part of my Mega 1st Grade Math Bundle**** Buy and save and any new products added later will be yours at NO CHARGE! Buy and SAVE!!!! Ultimate 1st Grade Math Bundle These items are available separately in my store: 1st Grade Salt Life keywords: addition facts to 20, subtraction facts from 20, clip cards, math centers, basic facts