{"type":"rich","version":"1.0","title":"3-Digit Addition & Subtraction","description":"Players study flashcards showing a three-digit addition or subtraction problem on the front and an efficient solution with regrouping or place value reasoning on the back. The deck is designed for review and repeated practice with fluent computation strategies within 1000. (3.NBT.A.2)","author_name":"Padlet Arcade","thumbnail_url":"https://arcade.padlet.com/open-graph/social-preview-image.png?timestamp=1774336045373&hashid=Z4jV5mlRrw","html":"<iframe src=\"https://arcade.padlet.com/embed/Z4jV5mlRrw\" width=\"720\" height=\"480\" frameborder=\"0\" allowfullscreen></iframe>","width":720,"height":480,"provider_name":"Padlet Arcade","provider_url":"https://arcade.padlet.com"}