{"id":60,"date":"2022-04-12T04:40:29","date_gmt":"2022-04-12T04:40:29","guid":{"rendered":"http:\/\/4thclass.deltapublications.in\/?page_id=60"},"modified":"2025-08-30T10:07:40","modified_gmt":"2025-08-30T10:07:40","slug":"c-6-estimate-differences","status":"publish","type":"page","link":"https:\/\/4thclass.deltapublications.in\/index.php\/c-6-estimate-differences\/","title":{"rendered":"C.6 Estimate differences"},"content":{"rendered":"\n<h2 class=\"wp-block-heading has-text-align-center has-text-color has-huge-font-size\" style=\"color:#00056d;text-transform:uppercase\"><strong>Estimate differences<\/strong><\/h2>\n\n\n\n<figure class=\"wp-block-video\"><video controls src=\"https:\/\/4thclass.deltapublications.in\/wp-content\/uploads\/2023\/08\/C.6-Estimate-differences.mp4\"><\/video><\/figure>\n\n\n\n<p><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<ul class=\"wp-block-list\">\n<li><strong>Estimation<\/strong> means finding an answer that is close to the exact answer, but easier and quicker.<\/li>\n\n\n\n<li><strong>Estimating differences<\/strong> means finding about how much two numbers differ by rounding them before subtracting.<\/li>\n\n\n\n<li>We usually <strong>round numbers<\/strong> to the nearest <strong>tens, hundreds, or thousands<\/strong> depending on the size of the numbers.<\/li>\n\n\n\n<li>Estimation helps us check if our actual subtraction answer is reasonable.<\/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>\ud83d\udd39 Steps to Estimate Differences<\/strong><\/strong><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Look at the numbers<\/strong> you want to subtract.<\/li>\n\n\n\n<li><strong>Round<\/strong> each number to the nearest 10, 100, or 1000 (as required).<\/li>\n\n\n\n<li><strong>Subtract<\/strong> the rounded numbers.<\/li>\n\n\n\n<li>Write the <strong>estimated difference<\/strong>.<\/li>\n<\/ul>\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><strong>\ud83d\udcdd Examples<\/strong><\/strong><\/strong><\/td><\/tr><\/tbody><\/table><\/figure>\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>Example 1:<\/strong><\/strong><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>Find the estimated difference of <strong>387 \u2013 242<\/strong>.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Round 387 \u2192 400<\/li>\n\n\n\n<li>Round 242 \u2192 200<\/li>\n\n\n\n<li>Subtract: 400 \u2013 200 = <strong>200<\/strong><br>\u2705 Estimated Difference = <strong>200<\/strong><\/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>Example 2:<\/strong><\/strong><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>Find the estimated difference of <strong>735 \u2013 468<\/strong>.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Round 735 \u2192 700<\/li>\n\n\n\n<li>Round 468 \u2192 500<\/li>\n\n\n\n<li>Subtract: 700 \u2013 500 = <strong>200<\/strong><br>\u2705 Estimated Difference = <strong>200<\/strong><\/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>Example 3:<\/strong><\/strong><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>Find the estimated difference of <strong>5,642 \u2013 2,389<\/strong>.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Round 5,642 \u2192 6,000<\/li>\n\n\n\n<li>Round 2,389 \u2192 2,000<\/li>\n\n\n\n<li>Subtract: 6,000 \u2013 2,000 = <strong>4,000<\/strong><br>\u2705 Estimated Difference = <strong>4,000<\/strong><\/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>\ud83c\udf1f <strong>Remember<\/strong><\/strong><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Estimation gives an <strong>approximate answer<\/strong>, not the exact one.<\/li>\n\n\n\n<li>Always check whether you need to round to the nearest <strong>10, 100, or 1000<\/strong>.<\/li>\n\n\n\n<li>Use estimation to <strong>save time<\/strong> and to <strong>check accuracy<\/strong> of exact subtraction.<\/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>\ud83c\udfe0 Practice Problems<\/strong><\/strong><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>Estimate the differences:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>467 \u2013 189<\/li>\n\n\n\n<li>1,245 \u2013 876<\/li>\n\n\n\n<li>9,835 \u2013 6,249<\/li>\n\n\n\n<li>6,721 \u2013 3,188<\/li>\n\n\n\n<li>752 \u2013 398<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-align-center has-text-color has-link-color has-large-font-size wp-elements-3fefd20f8ce119a518e5f53333ab5486\" style=\"color:#105000\"><strong>Learn with an example<\/strong><\/p>\n\n\n\n<div class=\"wp-block-group has-primary-color has-text-color has-background has-link-color has-normal-font-size wp-elements-8e36eab70efd23cec557405632b82c8f\" style=\"background-color:#bbe2f6\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<div class=\"wp-block-group has-primary-color has-background-background-color has-text-color has-background has-link-color has-normal-font-size wp-elements-c6f65de31219fff31528b53576174071\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<p class=\"has-text-color has-link-color wp-elements-ddf6d885ab8378c92122c53b76efb3f9\" style=\"color:#b00012\">\ud83c\udfaf Estimate the difference by rounding each number to the nearest hundred and then subtracting.<\/p>\n\n\n\n<p class=\"has-text-align-center\"> 862 \u2212 282 = <\/p>\n\n\n\n<p>The difference is approximately&nbsp;_____.<\/p>\n<\/div><\/div>\n\n\n\n<p>Round each number to the nearest hundred.<\/p>\n\n\n\n<p>862 \u2212 282 = ?<\/p>\n\n\n\n<p>900 \u2212 300 = ?<\/p>\n\n\n\n<p>Now subtract:<\/p>\n\n\n\n<p>900 \u2212 300 = 600<\/p>\n\n\n\n<p>The difference is about 600.<\/p>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-group has-primary-color has-text-color has-background has-link-color has-normal-font-size wp-elements-04f214d6ab42c63437f4d41f376678dd\" style=\"background-color:#fdc5f5\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<div class=\"wp-block-group has-primary-color has-background-background-color has-text-color has-background has-link-color has-normal-font-size wp-elements-6e44c0e78a0a08dd244e3eb47adb4aee\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<p class=\"has-text-color has-link-color wp-elements-ddf6d885ab8378c92122c53b76efb3f9\" style=\"color:#b00012\">\ud83c\udfaf Estimate the difference by rounding each number to the nearest hundred and then subtracting.<\/p>\n\n\n\n<p class=\"has-text-align-center has-primary-color has-text-color has-link-color has-normal-font-size wp-elements-cd52fa6668260b09381ec6cd3b8d88b2\">397 &#8211; 104  =<\/p>\n\n\n\n<p class=\"has-primary-color has-text-color has-link-color wp-elements-f1673f83689f6454e55c3972008cc6af\">The difference is approximately&nbsp;_____.<\/p>\n<\/div><\/div>\n\n\n\n<p>Round each number to the nearest hundred.<\/p>\n\n\n\n<p>397 \u2212 104 = ?<\/p>\n\n\n\n<p>400 \u2212 100 = ?<\/p>\n\n\n\n<p>Now subtract:<\/p>\n\n\n\n<p>400 \u2212 100 = 300<\/p>\n\n\n\n<p>The difference is about 300.<\/p>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-group has-primary-color has-text-color has-background has-link-color has-normal-font-size wp-elements-a53defbeea88e460c3efbd23c83cca58\" style=\"background-color:#f8f1b9\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<div class=\"wp-block-group has-primary-color has-background-background-color has-text-color has-background has-link-color wp-elements-367fc4fb48a9c59ea039e655bf380ea9\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<p class=\"has-text-color has-link-color has-normal-font-size wp-elements-c9cfc91e0cade6904f960b414626f4f5\" style=\"color:#b00012\">\ud83c\udfaf Estimate the difference by rounding each number to the nearest hundred and then subtracting.<\/p>\n\n\n\n<p class=\"has-text-align-center has-normal-font-size\">863-749  =<\/p>\n\n\n\n<p>The difference is approximately&nbsp;_____.<\/p>\n<\/div><\/div>\n\n\n\n<p>Round each number to the nearest hundred.<\/p>\n\n\n\n<p>863 \u2212 749 = ?<\/p>\n\n\n\n<p>900 \u2212 700 = ?<\/p>\n\n\n\n<p>Now subtract:<\/p>\n\n\n\n<p>900 \u2212 700 = 200<\/p>\n\n\n\n<p>The difference is about 200.<\/p>\n<\/div><\/div>\n\n\n\n<p class=\"has-text-color has-large-font-size\" style=\"color:#d90000\"><strong>Let&#8217;s practice!<\/strong><\/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\/76331\/143\/551\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/4thclass.deltapublications.in\/wp-content\/uploads\/2023\/04\/Worksheet-1-3-110.png\" alt=\"\" class=\"wp-image-6557\" srcset=\"https:\/\/4thclass.deltapublications.in\/wp-content\/uploads\/2023\/04\/Worksheet-1-3-110.png 500w, https:\/\/4thclass.deltapublications.in\/wp-content\/uploads\/2023\/04\/Worksheet-1-3-110-300x300.png 300w, https:\/\/4thclass.deltapublications.in\/wp-content\/uploads\/2023\/04\/Worksheet-1-3-110-150x150.png 150w\" 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\/76331\/093\/363\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/4thclass.deltapublications.in\/wp-content\/uploads\/2023\/04\/Worksheet-1-1-2-104.png\" alt=\"\" class=\"wp-image-6560\" srcset=\"https:\/\/4thclass.deltapublications.in\/wp-content\/uploads\/2023\/04\/Worksheet-1-1-2-104.png 500w, https:\/\/4thclass.deltapublications.in\/wp-content\/uploads\/2023\/04\/Worksheet-1-1-2-104-300x300.png 300w, https:\/\/4thclass.deltapublications.in\/wp-content\/uploads\/2023\/04\/Worksheet-1-1-2-104-150x150.png 150w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><\/figure>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Estimate differences Key notes: \u2728 Key Points \ud83d\udd39 Steps to Estimate Differences \ud83d\udcdd Examples Example 1: Find the estimated difference of 387 \u2013 242. Example 2: Find the estimated difference of 735 \u2013 468. Example 3: Find the estimated difference of 5,642 \u2013 2,389. \ud83c\udf1f Remember \ud83c\udfe0 Practice Problems Estimate the differences: Learn with an<a class=\"more-link\" href=\"https:\/\/4thclass.deltapublications.in\/index.php\/c-6-estimate-differences\/\">Continue reading <span class=\"screen-reader-text\">&#8220;C.6 Estimate differences&#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,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"class_list":["post-60","page","type-page","status-publish","hentry","entry"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/4thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/60","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/4thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/4thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/4thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/4thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/comments?post=60"}],"version-history":[{"count":19,"href":"https:\/\/4thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/60\/revisions"}],"predecessor-version":[{"id":15857,"href":"https:\/\/4thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/60\/revisions\/15857"}],"wp:attachment":[{"href":"https:\/\/4thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/media?parent=60"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}