{"version":"1.0","provider_name":"sumomath.com","provider_url":"https:\/\/sumomath.com\/content","author_name":"sumomath.com","author_url":"https:\/\/sumomath.com\/content","title":"Abacus Math Program - Lesson 14 - Reverse Double Five - sumomath.com","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"AqRr2z1dm9\"><a href=\"https:\/\/sumomath.com\/content\/abacus-math-program-lesson-14-reverse-double-five\/\">Abacus Math Program &#8211; Lesson 14 &#8211; Reverse Double Five<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/sumomath.com\/content\/abacus-math-program-lesson-14-reverse-double-five\/embed\/#?secret=AqRr2z1dm9\" width=\"600\" height=\"338\" title=\"&#8220;Abacus Math Program &#8211; Lesson 14 &#8211; Reverse Double Five&#8221; &#8212; sumomath.com\" data-secret=\"AqRr2z1dm9\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script type=\"text\/javascript\">\n\/* <![CDATA[ *\/\n\/*! This file is auto-generated *\/\n!function(d,l){\"use strict\";l.querySelector&&d.addEventListener&&\"undefined\"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!\/[^a-zA-Z0-9]\/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret=\"'+t.secret+'\"]'),o=l.querySelectorAll('blockquote[data-secret=\"'+t.secret+'\"]'),c=new RegExp(\"^https?:$\",\"i\"),i=0;i<o.length;i++)o[i].style.display=\"none\";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute(\"style\"),\"height\"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):\"link\"===t.message&&(r=new URL(s.getAttribute(\"src\")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener(\"message\",d.wp.receiveEmbedMessage,!1),l.addEventListener(\"DOMContentLoaded\",function(){for(var e,t,s=l.querySelectorAll(\"iframe.wp-embedded-content\"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute(\"data-secret\"))||(t=Math.random().toString(36).substring(2,12),e.src+=\"#?secret=\"+t,e.setAttribute(\"data-secret\",t)),e.contentWindow.postMessage({message:\"ready\",secret:t},\"*\")},!1)))}(window,document);\n\/\/# sourceURL=https:\/\/sumomath.com\/content\/wp-includes\/js\/wp-embed.min.js\n\/* ]]> *\/\n<\/script>\n","description":"In Lesson 13\u00a0we explored the Forward Double Fives in the forward direction for addition. Now let&#8217;s take a look at the double fives in the reverse direction for subtraction. We will use the exact same technique but this time we will perform the 10 pair subtraction rule using two 5 pair movements. Let&#8217;s work through\u00a0some","thumbnail_url":"https:\/\/www.sumomath.com\/content\/wp-content\/uploads\/2020\/02\/lesson10example3.png"}