{"id":25,"date":"2022-04-08T03:52:31","date_gmt":"2022-04-08T03:52:31","guid":{"rendered":"http:\/\/6thclass.deltapublications.in\/?page_id=25"},"modified":"2025-08-13T11:31:23","modified_gmt":"2025-08-13T11:31:23","slug":"a-5add-and-subtract-whole-numbers-word-problems","status":"publish","type":"page","link":"https:\/\/6thclass.deltapublications.in\/index.php\/a-5add-and-subtract-whole-numbers-word-problems\/","title":{"rendered":"A.5\tAdd and subtract whole numbers: word problems"},"content":{"rendered":"\n<h2 class=\"wp-block-heading has-text-align-center has-text-color has-link-color has-huge-font-size wp-elements-923e9d129556f9f49ce5683f74e662ba\" style=\"color:#00056d;text-transform:uppercase\"><strong>Add and subtract whole numbers: word problems<\/strong><\/h2>\n\n\n\n<figure class=\"wp-block-video\"><video controls src=\"https:\/\/6thclass.deltapublications.in\/wp-content\/uploads\/2023\/07\/A.5-Add-and-subtract-whole-numbers_-word-problems.mp4\"><\/video><\/figure>\n\n\n\n<p class=\"has-text-color has-link-color has-huge-font-size wp-elements-ac2bc047fac346cd34a46d2a76287634\" style=\"color:#74008b;text-transform:capitalize\">key notes:<\/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> Understanding Addition and Subtraction in Word Problems<\/strong><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Addition<\/strong> is used when we want to find the <strong>total<\/strong> or <strong>combine quantities<\/strong>.<\/li>\n\n\n\n<li><strong>Subtraction<\/strong> is used when we want to find <strong>how much is left<\/strong> or <strong>the difference<\/strong> between quantities.<\/li>\n<\/ul>\n\n\n\n<p><strong>Keywords to look for:<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Operation<\/th><th>Keywords<\/th><\/tr><\/thead><tbody><tr><td>Addition<\/td><td>total, in all, altogether, combined, sum, more<\/td><\/tr><tr><td>Subtraction<\/td><td>left, remaining, difference, fewer, less, decrease<\/td><\/tr><\/tbody><\/table><\/figure>\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>Steps to Solve Word Problems<\/strong><\/strong><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Read the problem carefully<\/strong> to understand what is being asked.<\/li>\n\n\n\n<li><strong>Identify the numbers and operation<\/strong> (addition or subtraction).<\/li>\n\n\n\n<li><strong>Write the number sentence<\/strong> (equation).<\/li>\n\n\n\n<li><strong>Solve step by step<\/strong>.<\/li>\n\n\n\n<li><strong>Check your answer<\/strong> to ensure it makes sense.<\/li>\n\n\n\n<li><strong>Write the answer with the correct unit<\/strong> (like books, rupees, km, etc.).<\/li>\n<\/ol>\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>Examples<\/strong><\/strong><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><strong>Example 1 \u2013 Addition:<\/strong><br>A shop has 245 pencils. The shop receives 180 more pencils. How many pencils are there now?<\/p>\n\n\n\n<p><strong>Solution:<\/strong> <\/p>\n\n\n\n<p class=\"has-text-align-center\">245+180=425<\/p>\n\n\n\n<p>\u2705 <strong>Answer:<\/strong> 425 pencils<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p><strong>Example 2 \u2013 Subtraction:<\/strong><br>Ravi had \u20b9500. He bought a book for \u20b9175. How much money is left?<\/p>\n\n\n\n<p><strong>Solution:<\/strong> <\/p>\n\n\n\n<p class=\"has-text-align-center\">500\u2212175=325<\/p>\n\n\n\n<p>\u2705 <strong>Answer:<\/strong> \u20b9325<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p><strong>Example 3 \u2013 Combination Problem:<\/strong><br>A library had 750 books. It bought 230 more books and gave 120 books to another school. How many books are there now?<\/p>\n\n\n\n<p><strong>Solution:<\/strong> <\/p>\n\n\n\n<p class=\"has-text-align-center\">750+230=980(after\u00a0buying)<\/p>\n\n\n\n<p class=\"has-text-align-center has-normal-font-size\">980\u2212120=860(after\u00a0giving\u00a0away)<\/p>\n\n\n\n<p>\u2705 <strong>Answer:<\/strong> 860 books<\/p>\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> Tips for Solving Word Problems<\/strong><\/strong><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Read <strong>carefully and underline important numbers<\/strong>.<\/li>\n\n\n\n<li>Identify the <strong>operation needed<\/strong> before calculating.<\/li>\n\n\n\n<li>Break <strong>large numbers<\/strong> into smaller parts if needed.<\/li>\n\n\n\n<li>Always <strong>write the answer with the unit<\/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> Practice Questions<\/strong><\/strong><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<ol class=\"wp-block-list\">\n<li>A school had 620 notebooks. It received 345 more. How many notebooks does the school have now?<\/li>\n\n\n\n<li>A farmer had 950 oranges. He sold 475 oranges. How many oranges are left?<\/li>\n\n\n\n<li>A car travels 245 km on Monday and 310 km on Tuesday. How far did it travel in total?<\/li>\n\n\n\n<li>A library had 1200 books. It bought 350 more and gave 200 books to students. How many books are there now?<\/li>\n\n\n\n<li>A shop has 780 candies. 265 candies are sold. How many candies remain?<\/li>\n<\/ol>\n\n\n\n<p><strong>Answers:<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>965 notebooks<\/li>\n\n\n\n<li>475 oranges<\/li>\n\n\n\n<li>555 km<\/li>\n\n\n\n<li>1350 books<\/li>\n\n\n\n<li>515 candies<\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<p class=\"has-normal-font-size\"><strong>Here are two examples:<\/strong><\/p>\n\n\n\n<div class=\"wp-block-group has-background has-normal-font-size\" style=\"background-color:#15f0d2\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\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: Addition<\/strong><\/strong><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"has-background-background-color has-text-color has-background has-link-color has-normal-font-size wp-elements-11ea96a78eaedc4eb183aecb4bca1960\" style=\"color:#b34b4b\"><strong>Problem:<\/strong> A country&#8217;s population in 1990 was 906450600, and the next year it increased by 9889700. What was the population of that country in the year 1991?<\/p>\n\n\n\n<h4 class=\"wp-block-heading has-normal-font-size\">Steps to Solve:<\/h4>\n\n\n\n<p class=\"has-normal-font-size\"><strong>Identify the numbers involved:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list has-normal-font-size\">\n<li class=\"has-normal-font-size\">Population in 1990:     <strong>906450600<\/strong><\/li>\n\n\n\n<li class=\"has-normal-font-size\">Increase in population:    <strong> 9889700<\/strong><\/li>\n<\/ul>\n\n\n\n<p class=\"has-normal-font-size\"><strong>Set up the addition problem:<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code has-normal-font-size\"><code>   Population in 1990:       906450600\n   Increase in population:  +  9889700\n            --------------------------\n   Total population in 1991: 916340300<\/code><\/pre>\n\n\n\n<p class=\"has-normal-font-size\"><strong>Perform the addition:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"has-normal-font-size\">Add the numbers column by column, starting from the rightmost digit and moving left, carrying over if necessary.<\/li>\n\n\n\n<li class=\"has-normal-font-size\"><strong>Write the result:<\/strong><\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list has-normal-font-size\">\n<li class=\"has-normal-font-size\">The total population in 1991: <strong>91,63,40,300<\/strong><\/li>\n<\/ul>\n\n\n\n<p class=\"has-normal-font-size\">Therefore, the population of the country in 1991 was <strong>91,63,40,300<\/strong>.<\/p>\n<\/div><\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<div class=\"wp-block-group has-background has-normal-font-size\" style=\"background-color:#dbc6f1\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\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: Subtraction<\/strong><\/strong><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"has-background-background-color has-text-color has-background has-link-color has-normal-font-size wp-elements-51d3fd237901d066118157e9d77cbf15\" style=\"color:#a43131\"><strong>Problem:<\/strong> The sum of two numbers is 41482308. If one number is 3918695, then find the other number.<\/p>\n\n\n\n<h4 class=\"wp-block-heading has-normal-font-size\">Steps to Solve:<\/h4>\n\n\n\n<p class=\"has-normal-font-size\"><strong>Identify the numbers involved:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list has-normal-font-size\">\n<li class=\"has-normal-font-size\">The sum of two numbers: 41482308<\/li>\n\n\n\n<li class=\"has-normal-font-size\">One of the numbers: 3918695<\/li>\n<\/ul>\n\n\n\n<p class=\"has-normal-font-size\"><strong>   Set up the subtraction problem:<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code has-normal-font-size\"><code>   Sum of two numbers:       41482308<br>   One number:             -  3918695<br>            --------------------------<br>   Second number:            37563613<br><br><strong>Perform the subtraction:<\/strong><\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"has-normal-font-size\">Subtract the numbers column by column, starting from the rightmost digit and moving left, borrowing if necessary.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-normal-font-size\"><strong>  Write the result:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"has-normal-font-size\">The other number: <strong>37,56,36,13<\/strong><\/li>\n<\/ul>\n\n\n\n<p class=\"has-normal-font-size\">Therefore, the other number is <strong>37,56,36,13<\/strong>.<\/p>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-group has-background\" style=\"background-color:#f7f3c5\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<p class=\"has-text-color has-background has-link-color wp-elements-e12d9700f05c9686999c2ff734643a9b\" style=\"color:#000060;background-color:#e9e73b\"><strong>Practice Problems<\/strong><\/p>\n\n\n\n<p>Solve the following word problems. Show your work!<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A bakery sold 245 chocolate chip cookies and 189 oatmeal cookies. What was the <em>total<\/em> number of cookies sold?<\/li>\n\n\n\n<li>A farmer planted 456 apple trees. 128 of the trees did not survive. How many apple trees are still alive?<\/li>\n\n\n\n<li>Maria earned $575 last week. She spent $238 on groceries. How much money does she have <em>remaining<\/em>?<\/li>\n\n\n\n<li>A school has 832 students. If 395 are girls, how many are boys?<\/li>\n\n\n\n<li>Tom collected 342 seashells on Monday and 289 seashells on Tuesday. How many seashells did he collect <em>altogether<\/em>?<\/li>\n<\/ul>\n<\/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\/76056\/189\/896\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/6thclass.deltapublications.in\/wp-content\/uploads\/2023\/04\/Worksheet-1-3.png\" alt=\"\" class=\"wp-image-5372\" srcset=\"https:\/\/6thclass.deltapublications.in\/wp-content\/uploads\/2023\/04\/Worksheet-1-3.png 500w, https:\/\/6thclass.deltapublications.in\/wp-content\/uploads\/2023\/04\/Worksheet-1-3-300x300.png 300w, https:\/\/6thclass.deltapublications.in\/wp-content\/uploads\/2023\/04\/Worksheet-1-3-150x150.png 150w, https:\/\/6thclass.deltapublications.in\/wp-content\/uploads\/2023\/04\/Worksheet-1-3-400x400.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\/76135\/919\/374\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/6thclass.deltapublications.in\/wp-content\/uploads\/2023\/04\/Worksheet-1-1-2.png\" alt=\"\" class=\"wp-image-5373\" srcset=\"https:\/\/6thclass.deltapublications.in\/wp-content\/uploads\/2023\/04\/Worksheet-1-1-2.png 500w, https:\/\/6thclass.deltapublications.in\/wp-content\/uploads\/2023\/04\/Worksheet-1-1-2-300x300.png 300w, https:\/\/6thclass.deltapublications.in\/wp-content\/uploads\/2023\/04\/Worksheet-1-1-2-150x150.png 150w, https:\/\/6thclass.deltapublications.in\/wp-content\/uploads\/2023\/04\/Worksheet-1-1-2-400x400.png 400w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><\/figure>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Add and subtract whole numbers: word problems key notes: Understanding Addition and Subtraction in Word Problems Keywords to look for: Operation Keywords Addition total, in all, altogether, combined, sum, more Subtraction left, remaining, difference, fewer, less, decrease Steps to Solve Word Problems Examples Example 1 \u2013 Addition:A shop has 245 pencils. The shop receives 180<a class=\"more-link\" href=\"https:\/\/6thclass.deltapublications.in\/index.php\/a-5add-and-subtract-whole-numbers-word-problems\/\">Continue reading <span class=\"screen-reader-text\">&#8220;A.5\tAdd and subtract whole numbers: 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,"_mi_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"class_list":["post-25","page","type-page","status-publish","hentry","entry"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/6thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/25","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/6thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/6thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/6thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/6thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/comments?post=25"}],"version-history":[{"count":42,"href":"https:\/\/6thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/25\/revisions"}],"predecessor-version":[{"id":16409,"href":"https:\/\/6thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/25\/revisions\/16409"}],"wp:attachment":[{"href":"https:\/\/6thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/media?parent=25"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}