{"id":82,"date":"2022-04-12T04:44:44","date_gmt":"2022-04-12T04:44:44","guid":{"rendered":"http:\/\/4thclass.deltapublications.in\/?page_id=82"},"modified":"2025-11-06T09:36:10","modified_gmt":"2025-11-06T09:36:10","slug":"d-9-estimate-products-multiply-by-1-digit-numbers","status":"publish","type":"page","link":"https:\/\/4thclass.deltapublications.in\/index.php\/d-9-estimate-products-multiply-by-1-digit-numbers\/","title":{"rendered":"D.9 Estimate products &#8211; multiply by 1-digit numbers"},"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 products &#8211; multiply by 1-digit numbers<\/strong><\/h2>\n\n\n\n<p class=\"has-text-color has-link-color has-huge-font-size wp-elements-d4d355b76dd54277399098c306fb7fdd\" style=\"color:#74008b\">key points :<\/p>\n\n\n\n<p class=\"has-large-font-size\"><strong>\ud83d\udd22 What is Estimation?<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Estimation means <strong>finding a number close to the actual answer<\/strong>.<\/li>\n\n\n\n<li>It helps us <strong>check our answers quickly<\/strong>. \u2705<\/li>\n<\/ul>\n\n\n\n<p class=\"has-large-font-size\"><strong>\u270f\ufe0f Why Estimate Products?<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Saves <strong>time<\/strong> \u23f1\ufe0f<\/li>\n\n\n\n<li>Makes <strong>calculations easier<\/strong> \ud83e\uddee<\/li>\n\n\n\n<li>Helps <strong>check if the answer is reasonable<\/strong> \ud83d\udc40<\/li>\n<\/ul>\n\n\n\n<p class=\"has-large-font-size\"><strong>\ud83d\udd39 Steps to Estimate a Product:<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Round the numbers<\/strong> to the nearest 10, 100, or simple number. \ud83c\udfaf<\/li>\n\n\n\n<li><strong>Multiply the rounded numbers<\/strong>. \u2716\ufe0f<\/li>\n\n\n\n<li>Use this as an <strong>estimated answer<\/strong>. \ud83c\udf89<\/li>\n<\/ol>\n\n\n\n<p class=\"has-large-font-size\"><strong>\ud83d\udfe2 Example 1:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Multiply <strong>48 \u00d7 7<\/strong><\/li>\n\n\n\n<li>Round 48 \u2192 <strong>50<\/strong><\/li>\n\n\n\n<li>Multiply 50 \u00d7 7 = <strong>350<\/strong> (Estimated product)<\/li>\n<\/ul>\n\n\n\n<p class=\"has-large-font-size\"><strong>\ud83d\udfe1 Example 2:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Multiply <strong>23 \u00d7 6<\/strong><\/li>\n\n\n\n<li>Round 23 \u2192 <strong>20<\/strong><\/li>\n\n\n\n<li>Multiply 20 \u00d7 6 = <strong>120<\/strong> (Estimated product)<\/li>\n<\/ul>\n\n\n\n<p class=\"has-large-font-size\"><strong>\ud83d\udca1 Tips for Estimation:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Round numbers <strong>up or down<\/strong> to make multiplication easier. \ud83d\udd3c\ud83d\udd3d<\/li>\n\n\n\n<li>The estimated product may <strong>not be exact<\/strong>, but it\u2019s <strong>close enough<\/strong>. \ud83d\udd0d<\/li>\n\n\n\n<li>Great for <strong>mental math<\/strong> and <strong>quick checks<\/strong>. \ud83e\udde0\ud83d\udca8<\/li>\n<\/ul>\n\n\n\n<p class=\"has-large-font-size\"><strong>\ud83c\udfa8 Fun Trick:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Use your fingers or draw <strong>dots\/blocks<\/strong> to visualize multiplication before estimating. \ud83d\udd90\ufe0f\ud83d\udfe6<\/li>\n<\/ul>\n\n\n\n<p class=\"has-large-font-size\"><strong>\ud83d\udccc Remember:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Estimation is <strong>not the exact answer<\/strong>, but a <strong>quick and helpful guess<\/strong>! \u2728<\/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-background has-large-font-size\" style=\"background-color:#c5e8f9\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<div class=\"wp-block-group has-background-background-color has-background\"><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-27c702142fc67693de0f9fe1d5e2a7b0\" style=\"color:#b00012\">\ud83d\udd25Estimate the product. Round the first factor to the nearest ten, and then multiply.<\/p>\n\n\n\n<p class=\"has-text-align-center has-large-font-size\">83 \u00d7 8<\/p>\n\n\n\n<p>The product is approximately&nbsp;_________.<\/p>\n<\/div><\/div>\n\n\n\n<p>Round the first factor to the nearest ten.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td>83<\/td><td>&nbsp;\u00d7&nbsp;<\/td><td>8<\/td><td>&nbsp;= ?<\/td><\/tr><tr><td><\/td><td><\/td><td><\/td><td><\/td><\/tr><tr><td>80<\/td><td>&nbsp;\u00d7&nbsp;<\/td><td>8<\/td><td>&nbsp;= ?<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>Now multiply:<\/p>\n\n\n\n<p>80 \u00d7 8 = 640<\/p>\n\n\n\n<p>The product is approximately 640.<\/p>\n\n\n\n<p>Compare your estimate to the exact answer:<\/p>\n\n\n\n<p>83 \u00d7 8 = 664<\/p>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-group has-background has-large-font-size\" style=\"background-color:#fbc7ea\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<div class=\"wp-block-group has-background-background-color has-background\"><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-45a23018d69e9fb2e20b07fe90dd92f9\" style=\"color:#b00012\">\ud83d\udd25Estimate the product. Round the second factor to the nearest ten, and then multiply.<\/p>\n\n\n\n<p class=\"has-text-align-center has-large-font-size\">8 \u00d7 66<\/p>\n\n\n\n<p>The product is approximately&nbsp;_________.<\/p>\n<\/div><\/div>\n\n\n\n<p>Round the second factor to the nearest ten.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td>8<\/td><td>&nbsp;\u00d7&nbsp;<\/td><td>66<\/td><td>&nbsp;= ?<\/td><\/tr><tr><td><\/td><td><\/td><td><\/td><td><\/td><\/tr><tr><td>8<\/td><td>&nbsp;\u00d7&nbsp;<\/td><td>70<\/td><td>&nbsp;= ?<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>Now multiply:<\/p>\n\n\n\n<p>8 \u00d7 70 = 560<\/p>\n\n\n\n<p>The product is approximately 560.<\/p>\n\n\n\n<p>Compare your estimate to the exact answer:<\/p>\n\n\n\n<p>8 \u00d7 66 = 528<\/p>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-group has-background has-large-font-size\" style=\"background-color:#c6f4bb\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<div class=\"wp-block-group has-background-background-color has-background\"><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-27c702142fc67693de0f9fe1d5e2a7b0\" style=\"color:#b00012\">\ud83d\udd25Estimate the product. Round the first factor to the nearest ten, and then multiply.<\/p>\n\n\n\n<p class=\"has-text-align-center has-large-font-size\">47 \u00d7 8<\/p>\n\n\n\n<p>The product is approximately&nbsp;_________.<\/p>\n<\/div><\/div>\n\n\n\n<p>Round the first factor to the nearest ten.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td>47<\/td><td>&nbsp;\u00d7&nbsp;<\/td><td>8<\/td><td>&nbsp;= ?<\/td><\/tr><tr><td><\/td><td><\/td><td><\/td><td><\/td><\/tr><tr><td>50<\/td><td>&nbsp;\u00d7&nbsp;<\/td><td>8<\/td><td>&nbsp;= ?<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>Now multiply:<\/p>\n\n\n\n<p>50 \u00d7 8 = 400<\/p>\n\n\n\n<p>The product is approximately 400.<\/p>\n\n\n\n<p>Compare your estimate to the exact answer:<\/p>\n\n\n\n<p>47 \u00d7 8 = 376<\/p>\n<\/div><\/div>\n\n\n\n<p class=\"has-text-color has-large-font-size\" style=\"color:#d90000\">Let&#8217;s practice!\ud83d\udd8a\ufe0f <\/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\/76846\/367\/651\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/4thclass.deltapublications.in\/wp-content\/uploads\/2023\/04\/Worksheet-1-3-213.png\" alt=\"\" class=\"wp-image-6920\" srcset=\"https:\/\/4thclass.deltapublications.in\/wp-content\/uploads\/2023\/04\/Worksheet-1-3-213.png 500w, https:\/\/4thclass.deltapublications.in\/wp-content\/uploads\/2023\/04\/Worksheet-1-3-213-300x300.png 300w, https:\/\/4thclass.deltapublications.in\/wp-content\/uploads\/2023\/04\/Worksheet-1-3-213-150x150.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\/101393\/076\/269\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/4thclass.deltapublications.in\/wp-content\/uploads\/2023\/04\/Worksheet-1-1-2-203.png\" alt=\"\" class=\"wp-image-6921\" srcset=\"https:\/\/4thclass.deltapublications.in\/wp-content\/uploads\/2023\/04\/Worksheet-1-1-2-203.png 500w, https:\/\/4thclass.deltapublications.in\/wp-content\/uploads\/2023\/04\/Worksheet-1-1-2-203-300x300.png 300w, https:\/\/4thclass.deltapublications.in\/wp-content\/uploads\/2023\/04\/Worksheet-1-1-2-203-150x150.png 150w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><\/figure>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Estimate products &#8211; multiply by 1-digit numbers key points : \ud83d\udd22 What is Estimation? \u270f\ufe0f Why Estimate Products? \ud83d\udd39 Steps to Estimate a Product: \ud83d\udfe2 Example 1: \ud83d\udfe1 Example 2: \ud83d\udca1 Tips for Estimation: \ud83c\udfa8 Fun Trick: \ud83d\udccc Remember: Learn with an example \ud83d\udd25Estimate the product. Round the first factor to the nearest ten, and<a class=\"more-link\" href=\"https:\/\/4thclass.deltapublications.in\/index.php\/d-9-estimate-products-multiply-by-1-digit-numbers\/\">Continue reading <span class=\"screen-reader-text\">&#8220;D.9 Estimate products &#8211; multiply by 1-digit numbers&#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-82","page","type-page","status-publish","hentry","entry"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/4thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/82","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=82"}],"version-history":[{"count":21,"href":"https:\/\/4thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/82\/revisions"}],"predecessor-version":[{"id":16689,"href":"https:\/\/4thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/82\/revisions\/16689"}],"wp:attachment":[{"href":"https:\/\/4thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/media?parent=82"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}