{"type":"rich","version":"1.0","title":"Adding & Subtracting 10 & 100","description":"Players flip tiles to find matching pairs of expressions and answers, such as 390 + 10 with 400 or 812 - 100 with 712. This quick-recognition game helps students build automaticity with mental changes of 10 and 100. (2.NBT.B.8)","author_name":"Padlet Arcade","thumbnail_url":"https://arcade.padlet.com/open-graph/social-preview-image.png?timestamp=1774334755683&hashid=M5K5m3g0KY","html":"<iframe src=\"https://arcade.padlet.com/embed/M5K5m3g0KY\" width=\"720\" height=\"480\" frameborder=\"0\" allowfullscreen></iframe>","width":720,"height":480,"provider_name":"Padlet Arcade","provider_url":"https://arcade.padlet.com"}