{"type":"rich","version":"1.0","description":"Subtract multiples of 10 in the range 10-90 from multiples of 10 in the range 10-90, sorting by difference of 0, 10-30, and 40-80. (1.NBT.C.6)","title":"Subtraction by Tens","width":720,"html":"<iframe src=\"https://arcade.padlet.com/embed/BGpq1z4XpQ\" width=\"720\" height=\"480\" frameborder=\"0\" allowfullscreen></iframe>","height":480,"provider_name":"Padlet Arcade","author_name":"Padlet Arcade","thumbnail_url":"https://arcade.padlet.com/open-graph/social-preview-image.png?timestamp=1785282845650&hashid=BGpq1z4XpQ&key=social-preview-image-v4","provider_url":"https://arcade.padlet.com"}