{"id":78,"date":"2022-04-12T09:29:42","date_gmt":"2022-04-12T09:29:42","guid":{"rendered":"http:\/\/7thclass.deltapublications.in\/?page_id=78"},"modified":"2025-08-20T09:03:57","modified_gmt":"2025-08-20T09:03:57","slug":"e-2-add-and-subtract-decimals-word-problems","status":"publish","type":"page","link":"https:\/\/7thclass.deltapublications.in\/index.php\/e-2-add-and-subtract-decimals-word-problems\/","title":{"rendered":"E.2 Add and subtract decimals: word problems"},"content":{"rendered":"\n<h2 class=\"wp-block-heading has-text-align-center has-text-color\" style=\"color:#00056d;text-transform:uppercase\"><strong>Add and subtract decimals: word problems<\/strong><\/h2>\n\n\n\n<p class=\"has-text-color has-link-color has-huge-font-size wp-elements-cc38c3564cde6a3e0a261c272b57b7bc\" style=\"color:#74008b;text-transform:capitalize\"><strong>key notes :<\/strong><\/p>\n\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-ab44110d08833dfa90def1395f158e52\" style=\"color:#000060\"><strong>Understanding Decimals<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>Decimals represent parts of a whole number.<\/li>\n\n\n\n<li>Place value is important (tenths, hundredths, thousandths, etc.).<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-dee316c9ee8dd7a5f880e2a6c6cd7599\" style=\"color:#000060\"><strong>Addition of Decimals<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>Align decimal points before adding.<\/li>\n\n\n\n<li>Add digits column by column, carrying if necessary.<\/li>\n\n\n\n<li>Keep the decimal point in the same position in the sum.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-6df43c5676254690d2bf6478636413e5\" style=\"color:#000060\"><strong>Subtraction of Decimals<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>Align decimal points before subtracting.<\/li>\n\n\n\n<li>Borrow when needed, just like whole numbers.<\/li>\n\n\n\n<li>Keep the decimal point in the same position in the difference.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-12927feca430a262d4d7f2c27afb400a\" style=\"color:#000060\"><strong>Word Problem Strategies<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>Read the problem carefully and identify the question.<\/li>\n\n\n\n<li>Determine if it requires addition or subtraction.<\/li>\n\n\n\n<li>Identify key phrases like &#8220;total,&#8221; &#8220;sum,&#8221; &#8220;difference,&#8221; &#8220;how much more\/less,&#8221; etc.<\/li>\n\n\n\n<li>Convert mixed units (e.g., dollars and cents) into decimals if needed.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-5f2a1c55076ba157419eb04926947c6f\" style=\"color:#000060\"><strong>Real-Life Applications<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>Money-related problems (e.g., shopping bills, discounts, taxes).<\/li>\n\n\n\n<li>Measurement problems (e.g., lengths, weights, capacities).<\/li>\n\n\n\n<li>Data-related problems (e.g., temperature changes, distance covered).<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-98bfcfc76b93fbcf59c4378cc03728d9\" style=\"color:#000060\"><strong>Checking the Answer<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>Estimate to check if the answer is reasonable.<\/li>\n\n\n\n<li>Recalculate using reverse operations (e.g., check subtraction by adding).<\/li>\n\n\n\n<li>Ensure the decimal is placed correctly.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-cb7bf5938c80e2102a4292daca7c1cc3\" style=\"color:#000060\"><strong>Common Mistakes to Avoid<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>Misaligning decimal points when adding or subtracting.<\/li>\n\n\n\n<li>Forgetting to add zeros to match decimal places.<\/li>\n\n\n\n<li>Incorrect borrowing or carrying.<\/li>\n\n\n\n<li>Ignoring the decimal point in the final answer.<\/li>\n<\/ul>\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-large-font-size\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-group has-background\" style=\"background-color:#d8d7fb\"><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\" style=\"color:#b00012\">\u25b6\ufe0f<strong> Justine mixed 0.43 grams of salt into a pot of soup she was cooking. Before she served the soup, Justine added 0.93 grams of salt. How much salt did Justine put into the soup in all?<\/strong> <strong>________ grams<\/strong><\/p>\n<\/div><\/div>\n\n\n\n<p>Add the numbers of grams. Remember to line up the decimal points.<\/p>\n\n\n<div class=\"wp-block-image is-resized\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Untitled_design__10_-removebg-preview.png\" alt=\"\" class=\"wp-image-7757\" style=\"width:194px;height:auto\" srcset=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Untitled_design__10_-removebg-preview.png 500w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Untitled_design__10_-removebg-preview-300x300.png 300w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Untitled_design__10_-removebg-preview-150x150.png 150w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Untitled_design__10_-removebg-preview-400x400.png 400w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/figure><\/div>\n\n\n<p>Justine put 1.36 grams of salt into the soup.<\/p>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-group has-background\" style=\"background-color:#ceecf7\"><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\" style=\"color:#b00012\">\u25b6\ufe0f <strong>A chef bought 0.8 kilograms of almonds and 0.1 kilograms of pecans. How many kilograms of nuts did the chef buy in all?_______&nbsp;kilograms<\/strong><\/p>\n<\/div><\/div>\n\n\n\n<p>Add the numbers of kilograms. Remember to line up the decimal points.<\/p>\n\n\n<div class=\"wp-block-image is-resized\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Untitled_design-removebg-preview-4.png\" alt=\"\" class=\"wp-image-7760\" style=\"width:172px;height:auto\" srcset=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Untitled_design-removebg-preview-4.png 500w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Untitled_design-removebg-preview-4-300x300.png 300w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Untitled_design-removebg-preview-4-150x150.png 150w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Untitled_design-removebg-preview-4-400x400.png 400w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/figure><\/div>\n\n\n<p>The chef bought 0.9 kilograms of nuts.<\/p>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-group has-background\" style=\"background-color:#cfc3eb\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<p class=\"has-background-background-color has-text-color has-background\" style=\"color:#b00012\">\ud83d\udd25<strong>Whitney bought two rolls of tape. The first roll had 3.1 metres of tape and the second roll had 3.2 metres of tape. How many metres of tape did Whitney buy in all?________ metres.<\/strong><\/p>\n\n\n\n<p>Add the numbers of metres. Remember to line up the decimal points.<\/p>\n\n\n<div class=\"wp-block-image is-resized\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/06\/Untitled_design__4_-removebg-preview-1.png\" alt=\"\" class=\"wp-image-7963\" style=\"width:242px;height:auto\" srcset=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/06\/Untitled_design__4_-removebg-preview-1.png 500w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/06\/Untitled_design__4_-removebg-preview-1-300x300.png 300w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/06\/Untitled_design__4_-removebg-preview-1-150x150.png 150w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/06\/Untitled_design__4_-removebg-preview-1-400x400.png 400w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/figure><\/div>\n\n\n<p>Whitney bought 6.3 metres of tape in all.<\/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<\/div><\/div>\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\/80628\/842\/984\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Worksheet-1-2-242.png\" alt=\"\" class=\"wp-image-7305\" srcset=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Worksheet-1-2-242.png 500w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Worksheet-1-2-242-300x300.png 300w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Worksheet-1-2-242-150x150.png 150w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Worksheet-1-2-242-400x400.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\/84650\/621\/755\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Worksheet-1-1-1-244.png\" alt=\"\" class=\"wp-image-7306\" srcset=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Worksheet-1-1-1-244.png 500w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Worksheet-1-1-1-244-300x300.png 300w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Worksheet-1-1-1-244-150x150.png 150w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Worksheet-1-1-1-244-400x400.png 400w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><\/figure>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Add and subtract decimals: word problems key notes : Understanding Decimals Addition of Decimals Subtraction of Decimals Word Problem Strategies Real-Life Applications Checking the Answer Common Mistakes to Avoid Learn with an example \u25b6\ufe0f Justine mixed 0.43 grams of salt into a pot of soup she was cooking. Before she served the soup, Justine added<a class=\"more-link\" href=\"https:\/\/7thclass.deltapublications.in\/index.php\/e-2-add-and-subtract-decimals-word-problems\/\">Continue reading <span class=\"screen-reader-text\">&#8220;E.2 Add and subtract decimals: word problems&#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,"footnotes":""},"class_list":["post-78","page","type-page","status-publish","hentry","entry"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/78","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/comments?post=78"}],"version-history":[{"count":27,"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/78\/revisions"}],"predecessor-version":[{"id":16813,"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/78\/revisions\/16813"}],"wp:attachment":[{"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/media?parent=78"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}