{"type":"rich","version":"1.0","title":"Addition and Subtraction Challenge","description":"Players solve a set of multi-digit addition and subtraction problems by choosing the correct answer from four options. The questions focus on accuracy with regrouping, place value alignment, and fluent use of the standard algorithm. (4.NBT.B.4)","author_name":"Padlet Arcade","thumbnail_url":"https://arcade.padlet.com/open-graph/social-preview-image.png?timestamp=1774336939138&hashid=ZMjg5NodK7","html":"<iframe src=\"https://arcade.padlet.com/embed/ZMjg5NodK7\" width=\"720\" height=\"480\" frameborder=\"0\" allowfullscreen></iframe>","width":720,"height":480,"provider_name":"Padlet Arcade","provider_url":"https://arcade.padlet.com"}