{"id":620699,"date":"2023-03-13T03:26:13","date_gmt":"2023-03-13T03:26:13","guid":{"rendered":"https:\/\/www.indcareer.com\/schools\/?p=620699"},"modified":"2024-04-29T12:50:47","modified_gmt":"2024-04-29T12:50:47","slug":"ncert-exemplar-class-8-maths-chapter-13-playing-with-numbers","status":"publish","type":"post","link":"https:\/\/www.indcareer.com\/schools\/ncert-exemplar-class-8-maths-chapter-13-playing-with-numbers\/","title":{"rendered":"NCERT Exemplar Class 8 Maths\u00a0Chapter 13: Playing with Numbers"},"content":{"rendered":"\n<p>NCERT Exemplar Class 8 Maths&nbsp;Chapter 13: Playing with Numbers. NCERT Exemplar Solutions for Class 8 Maths&nbsp;Chapter 13 Playing with Numbers prepare students for their Class 8 exams thoroughly. <\/p>\n\n\n\n<p>Maths&nbsp;problems and solutions for the Class 8 pdf are provided here which are similar to the questions being asked in the previous year&#8217;s board. <\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-ncert-exemplar-class-8-maths-nbsp-chapter-13-playing-with-numbers\"><strong>NCERT Exemplar Class 8 Maths&nbsp;Chapter 13: Playing with Numbers<\/strong><\/h2>\n\n\n\n<p>Class 8: Maths\u00a0Chapter 13 solutions. Complete Class 8 Maths\u00a0Chapter 13 Notes.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Main Concepts and Results<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Numbers can be written in general form. For example, a two digit number ab is written as ab = 10a + b; a three digit number abc is written as abc = 100a + 10b + c<\/li>\n\n\n\n<li>The general form of numbers are helpful in solving various problems related to numbers.<\/li>\n\n\n\n<li>Rationale for the divisibility of numbers by 11, 10, 5, 2, 9 or 3 can be explained by writing the numbers in general form.<\/li>\n\n\n\n<li>Many number puzzles involving different letters for different digits are solved using rules of number operations.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Solved Examples<\/h3>\n\n\n\n<p><strong>In examples 1 to 4, out of four options only one is correct. Write the correct answer.<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.indcareer.com\/schools\/wp-content\/uploads\/2024\/04\/49032273237_4c21446df3_o.png\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.indcareer.com\/schools\/wp-content\/uploads\/2024\/04\/49032057596_f6cde953a4_o.png\" alt=\"\"\/><\/figure>\n\n\n\n<p><strong>In examples 5 to 7, fill in the blanks to make the statements true.<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.indcareer.com\/schools\/wp-content\/uploads\/2024\/04\/49031559453_fda5d4ec36_o.png\" alt=\"\"\/><\/figure>\n\n\n\n<p><strong>In examples 8 to 10, state whether the statements are true (T) or false (F).<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.indcareer.com\/schools\/wp-content\/uploads\/2024\/04\/49032066316_e5412e283c_o.png\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.indcareer.com\/schools\/wp-content\/uploads\/2024\/04\/49032287722_1078edff4e_o.png\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.indcareer.com\/schools\/wp-content\/uploads\/2024\/04\/49031569243_efd261d0db_o.png\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.indcareer.com\/schools\/wp-content\/uploads\/2024\/04\/49032295317_0614dccd41_o.png\" alt=\"\"\/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Think and Discuss<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li>. What would be the value of y, if 277y is divisible by 11?<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-multiple-choice-questions\"><strong>Multiple Choice Questions<\/strong><\/h3>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.indcareer.com\/schools\/wp-content\/uploads\/2023\/03\/15964166866_6651551939_o.jpg\" alt=\"Playing with Numbers\/\"\/><\/figure>\n\n\n\n<p><strong>Fill in the Blanks Type Questions<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.indcareer.com\/schools\/wp-content\/uploads\/2023\/03\/15367694014_b54a9cc82a_o.jpg\" alt=\"Playing with Numbers\/\"\/><\/figure>\n\n\n\n<p><strong>True False Type Questions<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.indcareer.com\/schools\/wp-content\/uploads\/2023\/03\/15370311633_58f757da5a_o.jpg\" alt=\"Playing with Numbers\/\"\/><\/figure>\n\n\n\n<p><strong>Short Answer Type Questions<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.indcareer.com\/schools\/wp-content\/uploads\/2023\/03\/15989269952_15dacf194f_o.jpg\" alt=\"Playing with Numbers\/\"\/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Applications, Games and Puzzles<\/h3>\n\n\n\n<p><strong>1. Polygonal Numbers<\/strong><\/p>\n\n\n\n<p>Study the patterns given below and extend it. We already know about<br>square numbers.<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.indcareer.com\/schools\/wp-content\/uploads\/2024\/04\/49031582523_44cc81720e_o.png\" alt=\"\"\/><\/figure>\n\n\n\n<p>Draw two more.<\/p>\n\n\n\n<p>Here for the first square number, use 1\u00b2 ; for the second square number, use 2\u00b2 . To find the third square number use 3\u00b2 and so on. Write the nth square number.<\/p>\n\n\n\n<p>Now let\u2019s move to triangular numbers.<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.indcareer.com\/schools\/wp-content\/uploads\/2024\/04\/49032093371_045da67d67_o.png\" alt=\"\"\/><\/figure>\n\n\n\n<p>Find the next triangular number.<\/p>\n\n\n\n<p>o find the nth triangular number we use the formula<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.indcareer.com\/schools\/wp-content\/uploads\/2024\/04\/49031592998_522f62394b_o.png\" alt=\"\"\/><\/figure>\n\n\n\n<p>Are you familiar with pentagonal numbers?<\/p>\n\n\n\n<p>First three are given to you. Write the next one<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.indcareer.com\/schools\/wp-content\/uploads\/2024\/04\/49032100471_d071df1399_o.png\" alt=\"\"\/><\/figure>\n\n\n\n<p>Draw the dot patterns for the next pentagonal number. Count the number of dots inside the entire shape and write the number under the shape.<\/p>\n\n\n\n<p>2. Put tick mark in the appropriate boxes if the given numbers are divisible by any of 2, 3, 4, 5, 6, 8, 10, 11 numbers.<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.indcareer.com\/schools\/wp-content\/uploads\/2024\/04\/49031599773_aecda65754_o.png\" alt=\"\"\/><\/figure>\n\n\n\n<p><strong>3. Cross Number Puzzle<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.indcareer.com\/schools\/wp-content\/uploads\/2024\/04\/49032106956_0501ff49fc_o.png\" alt=\"\"\/><\/figure>\n\n\n\n<p>Fill in the blank spaces in the cross number puzzle using following clues.<\/p>\n\n\n\n<p><strong>Down<\/strong><\/p>\n\n\n\n<p>(a) 59 ______ 63 \u00f7 33<br>(b) 81 ______ 42 \u00f7 6<br>(c) 7 ______ 6988 \u00f7 11<br>(d) 37604 ______ 5 \u00f7 15<\/p>\n\n\n\n<p>(e) 56 ______ \u00f7 10<\/p>\n\n\n\n<p><strong>Across<\/strong><\/p>\n\n\n\n<p>(f) 90 ______ 815 \u00f7 15<br>(g) 3514 ______ \u00f7 12<br>(h) 4 ______ 07 \u00f7 7<br>(i) 8 ______ 558 \u00f7 6<br>(j) 6 ______ 5 \u00f7 55<\/p>\n\n\n\n<p><a href=\"https:\/\/docs.aglasem.com\/view\/054d29b8-008a-11ea-a7cb-02f21f5619c4\/\">Click here<\/a>&nbsp;to download the NCERT Exemplar Class 8 Maths Unit 13 Playing with Numbers<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td><a href=\"https:\/\/schools.aglasem.com\/ncert-exemplar-class-8-mathematics-unit-11\/\">\u00ab Previous<\/a><\/td><td>&nbsp;<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Answers to Multiple Choice Questions<\/h3>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.indcareer.com\/schools\/wp-content\/uploads\/2024\/04\/49032332377_9f8a9e7ac1_o.png\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.indcareer.com\/schools\/wp-content\/uploads\/2024\/04\/49032334887_04c065835b_o.png\" alt=\"\"\/><\/figure>\n\n\n\n<p><strong>Activity<\/strong><\/p>\n\n\n\n<p><strong>1<\/strong>. 3, 5, 9<br><strong>2.<\/strong>&nbsp;2, 3, 6, 9<br><strong>3<\/strong>. 2, 5, 10<br><strong>4.<\/strong>&nbsp;2, 3, 6, 9, 11<br><strong>5<\/strong>. 2, 4, 8<\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-background wp-element-button\" href=\"https:\/\/www.indcareer.com\/schools\/ncert-exemplar-problems-solutions\/\" style=\"background-color:#f06d6d\" target=\"_blank\" rel=\"noreferrer noopener\">NCERT Exemplar Solutions<\/a><\/div>\n\n\n\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-background wp-element-button\" href=\"https:\/\/www.indcareer.com\/schools\/ncert-exemplar-class-8-Maths-solutions\/\" style=\"background-color:#f06d6d\" target=\"_blank\" rel=\"noreferrer noopener\">NCERT Class 8 Exemplar Solutions<\/a><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>NCERT Exemplar Class 8 Maths&nbsp;Chapter 13: Playing with Numbers. NCERT Exemplar Solutions for Class 8 Maths&nbsp;Chapter 13 Playing with Numbers prepare students for their Class 8 exams thoroughly. Maths&nbsp;problems and solutions for the Class 8 pdf are provided here which are similar to the questions being asked in the previous year&#8217;s board. NCERT Exemplar Class [&hellip;]<\/p>\n","protected":false},"author":302,"featured_media":620701,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"newspack_featured_image_position":"","newspack_post_subtitle":"","newspack_article_summary_title":"Overview:","newspack_article_summary":"","newspack_hide_updated_date":false,"newspack_show_updated_date":false,"footnotes":""},"categories":[1411,58],"tags":[],"boards":[],"class_list":["post-620699","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-book-solutions","category-class-8","entry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.0 (Yoast SEO v27.1.1) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>NCERT Exemplar for Class 8, Maths\u00a0Chapter 13 - IndCareer Schools<\/title>\n<meta name=\"description\" content=\"NCERT Exemplar Class 8 Maths\u00a0Chapter 13: Playing with Numbers | Browse all Class 8 Maths\u00a0Chapters NCERT Exemplar books - IndCareer Schools\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.indcareer.com\/schools\/ncert-exemplar-class-8-maths-chapter-13-playing-with-numbers\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"NCERT Exemplar Class 8 Maths\u00a0Chapter 13: Playing with Numbers\" \/>\n<meta property=\"og:description\" content=\"NCERT Exemplar Class 8 Maths&nbsp;Chapter 13: Playing with Numbers. 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