{"version":"1.0","type":"rich","width":1200,"height":675,"title":"3-Digit Subtraction: Mastering the Art of Regrouping","description":"An interactive 10-question quiz for 3rd graders. Students explore regrouping across tens and hundreds, subtraction with zeros, and error analysis. This intermediate challenge uses varied activities to build confidence and mastery in triple-digit math operations.","author_name":"Genially","provider_name":"Genially","provider_url":"https://genially.com","html":"<div style='width: 100%;'><div style='position: relative; padding-bottom:56.25%; padding-top: 0; height: 0;'><iframe frameborder='0' width='1200' height='675' style='position:absolute; top: 0; left: 0; width: 100%; height: 100%;' src='https://view.genially.com/6a077ec6c80c919db896cb15' type='text/html' allowscriptaccess='always' allowfullscreen='true' scrolling='yes' allownetworking='all'></iframe></div></div>","thumbnail_url":"https://genially-thumbnails.genially.com/6a077ec6c80c919db896cb15.png?ts=1778876303075","thumbnail_width":1200,"thumbnail_height":675}