{"id":69,"date":"2022-04-11T14:24:06","date_gmt":"2022-04-11T14:24:06","guid":{"rendered":"http:\/\/3rdclass.deltapublications.in\/?page_id=69"},"modified":"2025-08-26T09:08:39","modified_gmt":"2025-08-26T09:08:39","slug":"c-9-addition-fill-in-the-missing-digits","status":"publish","type":"page","link":"https:\/\/3rdclass.deltapublications.in\/index.php\/c-9-addition-fill-in-the-missing-digits\/","title":{"rendered":"C.9 Addition: fill in the missing digits"},"content":{"rendered":"\n<h2 class=\"wp-block-heading has-text-align-center has-text-color has-link-color wp-elements-03f8a3244ab015385f449162d7984e92\" style=\"color:#00056d;text-transform:uppercase\"><strong>Addition: fill in the missing digits<\/strong><\/h2>\n\n\n\n<figure class=\"wp-block-video\"><video controls src=\"https:\/\/3rdclass.deltapublications.in\/wp-content\/uploads\/2023\/09\/C.9-Addition_-Fill-In-The-Missing-Digits.mp4\"><\/video><\/figure>\n\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-dd7a84c1fb18b729ddf6b16e989bfba8\" style=\"color:#74008d\"><strong>Key notes:<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-text-color has-link-color has-fixed-layout\" style=\"color:#000060\"><tbody><tr><td><strong>\u2728 Key Points:<\/strong><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><strong>1.<\/strong> <strong>Addition<\/strong> means putting numbers together to find the total.<\/p>\n\n\n\n<p><strong>2<\/strong>. Sometimes, in addition problems, <strong>one or more digits are missing<\/strong>.<\/p>\n\n\n\n<p><strong>3. <\/strong>To solve, we look carefully at the <strong>place values<\/strong> \u2013 ones, tens, hundreds.<\/p>\n\n\n\n<p><strong>4<\/strong>. Always <strong>add from right to left<\/strong> (ones \u2192 tens \u2192 hundreds).<\/p>\n\n\n\n<p><strong>5.<\/strong> Use <strong>carrying (regrouping)<\/strong> if the sum of a column is 10 or more.<\/p>\n\n\n\n<p><strong>6.<\/strong> Fill in the missing digit by <strong>thinking backwards<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>If a number is missing in the addition, check the column total.<\/li>\n\n\n\n<li>Subtract to find the missing digit.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-text-color has-link-color has-fixed-layout\" style=\"color:#000060\"><tbody><tr><td><strong><strong>\ud83e\uddee Example Problems:<\/strong><\/strong><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h4 class=\"wp-block-heading has-normal-font-size\"><strong>1. Without Carrying<\/strong><\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code>   3 5\n+  2 _\n------\n   5 7\n<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\ud83d\udc49 In the ones place: 5 + _ = 7 \u2192 missing digit = 2<\/li>\n<\/ul>\n\n\n\n<p>Answer:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>   3 5\n+  2 2\n------\n   5 7\n<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h4 class=\"wp-block-heading has-normal-font-size\">2. <strong>With Carrying<\/strong><\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code>   4 _\n+  2 8\n------\n   7 3\n<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\ud83d\udc49 In the ones place: _ + 8 = 3 (carry 1).<\/li>\n\n\n\n<li>So, missing digit = 5.<\/li>\n<\/ul>\n\n\n\n<p>Answer:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>   4 5\n+  2 8\n------\n   7 3\n<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-text-color has-link-color has-fixed-layout\" style=\"color:#000060\"><tbody><tr><td><strong><strong>\ud83d\udd11 Steps to Remember:<\/strong><\/strong><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Start with the <strong>ones place<\/strong>.<\/li>\n\n\n\n<li>Check if carrying is needed.<\/li>\n\n\n\n<li>Subtract to find the missing digit.<\/li>\n\n\n\n<li>Move to the next column.<\/li>\n\n\n\n<li>Double-check your work. \u2705<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-text-color has-link-color has-fixed-layout\" style=\"color:#000060\"><tbody><tr><td><strong><strong>\u270d\ufe0f Practice Questions:<\/strong><\/strong><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<ol class=\"wp-block-list\">\n<li><\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-code\"><code>   2 _\n+  3 4\n------\n   6 8\n<\/code><\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-code\"><code>   _ 7\n+  2 8\n------\n   5 5\n<\/code><\/pre>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li><\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-code\"><code>   4 2\n+  _ 9\n------\n   7 1<\/code><\/pre>\n\n\n\n<p class=\"has-text-align-center has-text-color has-large-font-size\" style=\"color:#105000\"><strong>Learn with an example<\/strong><\/p>\n\n\n\n<div class=\"wp-block-group has-background has-normal-font-size\" style=\"background-color:#efd5fe\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-group has-background-background-color has-background\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<p class=\"has-text-color has-link-color wp-elements-9bbf37565dfb1fcf6ad3a37f6a1ef596\" style=\"color:#b00012\"><strong>\u27a1\ufe0f Type the missing digit:<\/strong><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/3rdclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Untitled-design-1.png\" alt=\"\" class=\"wp-image-9558\" style=\"width:164px;height:164px\" srcset=\"https:\/\/3rdclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Untitled-design-1.png 500w, https:\/\/3rdclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Untitled-design-1-300x300.png 300w, https:\/\/3rdclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Untitled-design-1-150x150.png 150w, https:\/\/3rdclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Untitled-design-1-400x400.png 400w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/figure><\/div><\/div><\/div>\n\n\n\n<p>Start on the right. Add the ones column, remembering to carry over. Look at the tens column. The tens column must add up to 6. The missing number is 4.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/3rdclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Untitled_design__1_-removebg-preview-3.png\" alt=\"\" class=\"wp-image-9560\" style=\"width:211px;height:211px\" srcset=\"https:\/\/3rdclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Untitled_design__1_-removebg-preview-3.png 500w, https:\/\/3rdclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Untitled_design__1_-removebg-preview-3-300x300.png 300w, https:\/\/3rdclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Untitled_design__1_-removebg-preview-3-150x150.png 150w, https:\/\/3rdclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Untitled_design__1_-removebg-preview-3-400x400.png 400w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/figure><\/div><\/div><\/div>\n\n\n\n<div class=\"wp-block-group has-background has-normal-font-size\" style=\"background-color:#fbcccc\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-group has-background-background-color has-background has-normal-font-size\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<p class=\"has-text-color has-link-color wp-elements-9bbf37565dfb1fcf6ad3a37f6a1ef596\" style=\"color:#b00012\"><strong>\u27a1\ufe0f Type the missing digit:<\/strong><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/3rdclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Untitled-design-2.png\" alt=\"\" class=\"wp-image-9561\" style=\"width:173px;height:173px\" srcset=\"https:\/\/3rdclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Untitled-design-2.png 500w, https:\/\/3rdclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Untitled-design-2-300x300.png 300w, https:\/\/3rdclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Untitled-design-2-150x150.png 150w, https:\/\/3rdclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Untitled-design-2-400x400.png 400w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/figure><\/div><\/div><\/div>\n\n\n\n<p>Start on the right. Add the ones column. Look at the tens column. The tens column must add up to 7. The missing number is 5.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/3rdclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Untitled_design__3_-removebg-preview-1.png\" alt=\"\" class=\"wp-image-9562\" style=\"width:196px;height:196px\" srcset=\"https:\/\/3rdclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Untitled_design__3_-removebg-preview-1.png 500w, https:\/\/3rdclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Untitled_design__3_-removebg-preview-1-300x300.png 300w, https:\/\/3rdclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Untitled_design__3_-removebg-preview-1-150x150.png 150w, https:\/\/3rdclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Untitled_design__3_-removebg-preview-1-400x400.png 400w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/figure><\/div><\/div><\/div>\n\n\n\n<div class=\"wp-block-group has-background has-normal-font-size\" style=\"background-color:#f5facd\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-group has-background-background-color has-background has-normal-font-size\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-group\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<p class=\"has-text-color has-link-color wp-elements-9bbf37565dfb1fcf6ad3a37f6a1ef596\" style=\"color:#b00012\"><strong>\u27a1\ufe0f Type the missing digit:<\/strong><\/p>\n<\/div><\/div>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/3rdclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Untitled-design-4.png\" alt=\"\" class=\"wp-image-9563\" style=\"width:184px;height:184px\" srcset=\"https:\/\/3rdclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Untitled-design-4.png 500w, https:\/\/3rdclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Untitled-design-4-300x300.png 300w, https:\/\/3rdclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Untitled-design-4-150x150.png 150w, https:\/\/3rdclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Untitled-design-4-400x400.png 400w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/figure><\/div><\/div><\/div>\n\n\n\n<p>Start on the right. Look at the ones column. Add the ones. The missing number is 5.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/3rdclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Untitled_design__5_-removebg-preview.png\" alt=\"\" class=\"wp-image-9564\" style=\"width:201px;height:201px\" srcset=\"https:\/\/3rdclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Untitled_design__5_-removebg-preview.png 500w, https:\/\/3rdclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Untitled_design__5_-removebg-preview-300x300.png 300w, https:\/\/3rdclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Untitled_design__5_-removebg-preview-150x150.png 150w, https:\/\/3rdclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Untitled_design__5_-removebg-preview-400x400.png 400w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/figure><\/div><\/div><\/div>\n\n\n\n<p class=\"has-text-color has-large-font-size\" style=\"color:#d90000\">Let&#8217;s practice!<\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/wordwall.net\/play\/76323\/181\/845\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/3rdclass.deltapublications.in\/wp-content\/uploads\/2023\/04\/Worksheet-1-2-163.png\" alt=\"\" class=\"wp-image-8627\" srcset=\"https:\/\/3rdclass.deltapublications.in\/wp-content\/uploads\/2023\/04\/Worksheet-1-2-163.png 500w, https:\/\/3rdclass.deltapublications.in\/wp-content\/uploads\/2023\/04\/Worksheet-1-2-163-300x300.png 300w, https:\/\/3rdclass.deltapublications.in\/wp-content\/uploads\/2023\/04\/Worksheet-1-2-163-150x150.png 150w, https:\/\/3rdclass.deltapublications.in\/wp-content\/uploads\/2023\/04\/Worksheet-1-2-163-400x400.png 400w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/wordwall.net\/play\/30117\/021\/286\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/3rdclass.deltapublications.in\/wp-content\/uploads\/2023\/04\/Worksheet-1-1-1-163.png\" alt=\"\" class=\"wp-image-8628\" srcset=\"https:\/\/3rdclass.deltapublications.in\/wp-content\/uploads\/2023\/04\/Worksheet-1-1-1-163.png 500w, https:\/\/3rdclass.deltapublications.in\/wp-content\/uploads\/2023\/04\/Worksheet-1-1-1-163-300x300.png 300w, https:\/\/3rdclass.deltapublications.in\/wp-content\/uploads\/2023\/04\/Worksheet-1-1-1-163-150x150.png 150w, https:\/\/3rdclass.deltapublications.in\/wp-content\/uploads\/2023\/04\/Worksheet-1-1-1-163-400x400.png 400w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><\/figure>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Addition: fill in the missing digits Key notes: \u2728 Key Points: 1. Addition means putting numbers together to find the total. 2. Sometimes, in addition problems, one or more digits are missing. 3. To solve, we look carefully at the place values \u2013 ones, tens, hundreds. 4. Always add from right to left (ones \u2192<a class=\"more-link\" href=\"https:\/\/3rdclass.deltapublications.in\/index.php\/c-9-addition-fill-in-the-missing-digits\/\">Continue reading <span class=\"screen-reader-text\">&#8220;C.9 Addition: fill in the missing digits&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"om_disable_all_campaigns":false,"_mi_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"class_list":["post-69","page","type-page","status-publish","hentry","entry"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/3rdclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/69","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/3rdclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/3rdclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/3rdclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/3rdclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/comments?post=69"}],"version-history":[{"count":21,"href":"https:\/\/3rdclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/69\/revisions"}],"predecessor-version":[{"id":19342,"href":"https:\/\/3rdclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/69\/revisions\/19342"}],"wp:attachment":[{"href":"https:\/\/3rdclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/media?parent=69"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}