{"id":11,"date":"2022-04-12T08:44:45","date_gmt":"2022-04-12T08:44:45","guid":{"rendered":"http:\/\/7thclass.deltapublications.in\/?page_id=11"},"modified":"2025-08-19T17:56:47","modified_gmt":"2025-08-19T17:56:47","slug":"a-1-prime-or-composite","status":"publish","type":"page","link":"https:\/\/7thclass.deltapublications.in\/index.php\/a-1-prime-or-composite\/","title":{"rendered":"A.1 Prime or composite"},"content":{"rendered":"\n<h2 class=\"wp-block-heading has-text-align-center has-text-color\" style=\"color:#00056d;text-transform:uppercase\"><strong>Prime or composite<\/strong><\/h2>\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\" style=\"flex-basis:100%\">\n<div style=\"position: relative; width: 100%; height: 0; padding-top: 56.2500%;\n padding-bottom: 0; box-shadow: 0 2px 8px 0 rgba(63,69,81,0.16); margin-top: 1.6em; margin-bottom: 0.9em; overflow: hidden;\n border-radius: 8px; will-change: transform;\">\n  <iframe loading=\"lazy\" style=\"position: absolute; width: 100%; height: 100%; top: 0; left: 0; border: none; padding: 0;margin: 0;\"\n    src=\"https:\/\/www.canva.com\/design\/DAGv3KjhnXM\/v4fzc9xDh6Xb_lWzP_eDUQ\/watch?embed\" allowfullscreen=\"allowfullscreen\" allow=\"fullscreen\">\n  <\/iframe>\n<\/div>\n<a href=\"https:&#x2F;&#x2F;www.canva.com&#x2F;design&#x2F;DAGv3KjhnXM&#x2F;v4fzc9xDh6Xb_lWzP_eDUQ&#x2F;watch?utm_content=DAGv3KjhnXM&amp;utm_campaign=designshare&amp;utm_medium=embeds&amp;utm_source=link\" target=\"_blank\" rel=\"noopener\">7th class prime or composite<\/a> by Delta publications\n<\/div>\n<\/div>\n\n\n\n<p class=\"has-text-color has-huge-font-size\" style=\"color:#74008b\">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>What&nbsp;is&nbsp;a&nbsp;prime&nbsp;number?<\/strong><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"has-normal-font-size\">A&nbsp;<strong>prime&nbsp;number<\/strong>&nbsp;is a positive whole number with only two&nbsp;factors:&nbsp;1 and&nbsp;itself. <\/p>\n\n\n\n<p class=\"has-normal-font-size\">For&nbsp;example, 7 is a prime number. The only factors of 7 are 1 and&nbsp;7.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"has-normal-font-size\">1\u00d77=7<\/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>What&nbsp;is&nbsp;a&nbsp;composite&nbsp;number?<\/strong><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"has-normal-font-size\">A&nbsp;<strong>composite&nbsp;number<\/strong>&nbsp;has more factors than just 1 and&nbsp;itself.<\/p>\n\n\n\n<p class=\"has-normal-font-size\">For&nbsp;example, 15 is a composite number. It has factors 1, 3, 5, and&nbsp;15.<\/p>\n\n\n\n<ul class=\"wp-block-list has-normal-font-size\">\n<li>3\u00d75=15<\/li>\n\n\n\n<li>1\u00d715=15<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-table has-normal-font-size\"><table class=\"has-text-color has-link-color has-fixed-layout\" style=\"color:#000060\"><tbody><tr><td><strong>Prime vs. Composite: A Quick Comparison<\/strong><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<figure class=\"wp-block-table has-normal-font-size\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Prime Numbers<\/strong><br>Only divisible by 1 and itself.<br>Have exactly two factors.<br>Examples: 2, 3, 5, 7, 11<\/td><td><strong>Composite Numbers<\/strong><br>Divisible by 1, itself, and at least one other number.<br>Have more than two factors.<br>Examples: 4, 6, 8, 9, 10<\/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>Prime&nbsp;and&nbsp;composite&nbsp;numbers&nbsp;chart<\/strong><\/strong><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"has-normal-font-size\">This&nbsp;chart shows all of the prime numbers within&nbsp;200.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter is-resized\"><img decoding=\"async\" src=\"https:\/\/www.ixl.com\/~media\/1\/9wheUf6XXmTI-d_ZWuKhDzuUwjrJkFmrxJnqYZ90D1hmWpKd_E7VP-HOB-T9bHDvBxerFGzp1EH6w2DFJk17Rg6BHRRMfY2Jf1y_8U2tbxo.svg\" alt=\"A chart with the numbers from two through two hundred is shown. The numbers two, three, five, seven, eleven, thirteen, seventeen, nineteen, twenty-three, twenty-nine, thirty-one, thirty-seven, forty-one, forty-three, forty-seven, fifty-three, fifty-nine, sixty-one, sixty-seven, seventy-one, seventy-three, seventy-nine, eighty-three, eighty-nine, ninety-seven, one hundred one, one hundred three, one hundred seven, one hundred nine, one hundred thirteen, one hundred twenty-seven, one hundred thirty-one, one hundred thirty-seven, one hundred thirty-nine, one hundred forty-nine, one hundred fifty-one, one hundred fifty-seven, one hundred sixty-three, one hundred sixty-seven, one hundred seventy-three, one hundred seventy-nine, one hundred eighty-one, one hundred ninety-one, one hundred ninety-three, one hundred ninety-seven, and one hundred ninety-nine are highlighted to show that they are prime numbers.\" style=\"width:420px;height:auto\"\/><\/figure><\/div>\n\n\n<figure class=\"wp-block-table has-normal-font-size\"><table class=\"has-text-color has-link-color has-fixed-layout\" style=\"color:#000060\"><tbody><tr><td><strong>Identifying Prime and Composite Numbers: Some Tips<\/strong><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<ul class=\"wp-block-list has-normal-font-size\">\n<li class=\"has-normal-font-size\"><strong>Check for divisibility by small prime numbers:<\/strong> Start by checking if the number is divisible by 2, 3, 5, or 7. If it is, it&#8217;s composite (unless the number <em>is<\/em> 2, 3, 5, or 7).<\/li>\n\n\n\n<li><strong>Even numbers greater than 2 are always composite:<\/strong> This is because they are divisible by 2.<\/li>\n\n\n\n<li><strong>Numbers ending in 0 or 5 are usually composite:<\/strong> This is because they are divisible by 5 (with the exception of 5 itself).<\/li>\n\n\n\n<li><strong>Practice makes perfect!<\/strong> The more you work with numbers, the easier it will become to recognize prime and composite numbers.<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-table has-normal-font-size\"><table class=\"has-text-color has-link-color has-fixed-layout\" style=\"color:#000060\"><tbody><tr><td><strong>Why are Prime and Composite Numbers Important?<\/strong><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>Prime and composite numbers are the fundamental building blocks of all whole numbers. Understanding them is crucial for many mathematical concepts, including:<\/p>\n\n\n\n<ul class=\"wp-block-list has-normal-font-size\">\n<li><strong>Factoring<\/strong><\/li>\n\n\n\n<li class=\"has-normal-font-size\"><strong>Simplifying Fractions<\/strong><\/li>\n\n\n\n<li><strong>Finding the Greatest Common Factor (GCF)<\/strong><\/li>\n\n\n\n<li><strong>Finding the Least Common Multiple (LCM)<\/strong><\/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-b44cda021ddeb2e340f30f73263e8e53\" style=\"color:#000060\"><strong>Learn with an example<\/strong><\/p>\n\n\n\n<div class=\"wp-block-group has-background has-normal-font-size\" style=\"background-color:#f6b8b8\"><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 has-normal-font-size\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<p class=\"has-text-color has-link-color has-normal-font-size wp-elements-e5af4c80191703a765f2cc9e51425fdc\" style=\"color:#d90000\">Is 7 a prime number or a composite number?<\/p>\n\n\n\n<ul class=\"wp-block-list has-normal-font-size\">\n<li class=\"has-normal-font-size\">prime number<\/li>\n\n\n\n<li class=\"has-normal-font-size\">composite number<\/li>\n<\/ul>\n<\/div><\/div>\n\n\n\n<p>The only factors of 7 are 1 and 7.<br>7 is a prime number.<\/p>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-group has-background has-normal-font-size\" style=\"background-color:#b4f7c9\"><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 has-normal-font-size\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<p class=\"has-text-color has-link-color has-normal-font-size wp-elements-01b5f20166afaa36f6493d1ad1dbb583\" style=\"color:#d90000\">Is 20 a prime number or a composite number?<\/p>\n\n\n\n<ul class=\"wp-block-list has-normal-font-size\">\n<li class=\"has-normal-font-size\">prime number<\/li>\n\n\n\n<li class=\"has-normal-font-size\">composite number<\/li>\n<\/ul>\n<\/div><\/div>\n\n\n\n<p>20 has more factors than just 1 and itself.<br>For example, 2 is a factor of 20:<\/p>\n\n\n\n<p>20 \u00f7 2 = 10<br>20 is not a prime number.<\/p>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-group has-background has-normal-font-size\" style=\"background-color:#f6beef\"><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 has-normal-font-size\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<p class=\"has-text-color has-link-color wp-elements-dd4d105fbeeb000f358dd83473e62e46\" style=\"color:#d90000\">Is 13 a prime number or a composite number?<\/p>\n\n\n\n<ul class=\"wp-block-list has-normal-font-size\">\n<li>prime number<\/li>\n\n\n\n<li>composite number<\/li>\n<\/ul>\n<\/div><\/div>\n\n\n\n<p>The only factors of 13 are 1 and 13.<br>13 is a prime number.<\/p>\n<\/div><\/div>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-large-font-size\" id=\"yui_3_18_1_1_1669684066783_682\" style=\"color:#d90000\">Let&#8217;s practice!\u2712\ufe0f<\/h3>\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\/75614\/329\/152\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Worksheet-1-2.png\" alt=\"\" class=\"wp-image-6461\" srcset=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Worksheet-1-2.png 500w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Worksheet-1-2-300x300.png 300w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Worksheet-1-2-150x150.png 150w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Worksheet-1-2-400x400.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\/75609\/300\/783\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Worksheet-1-1-1.png\" alt=\"\" class=\"wp-image-6462\" srcset=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Worksheet-1-1-1.png 500w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Worksheet-1-1-1-300x300.png 300w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Worksheet-1-1-1-150x150.png 150w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Worksheet-1-1-1-400x400.png 400w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><\/figure>\n<\/div>\n<\/div>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Prime or composite 7th class prime or composite by Delta publications Key Notes: What&nbsp;is&nbsp;a&nbsp;prime&nbsp;number? A&nbsp;prime&nbsp;number&nbsp;is a positive whole number with only two&nbsp;factors:&nbsp;1 and&nbsp;itself. For&nbsp;example, 7 is a prime number. The only factors of 7 are 1 and&nbsp;7. What&nbsp;is&nbsp;a&nbsp;composite&nbsp;number? A&nbsp;composite&nbsp;number&nbsp;has more factors than just 1 and&nbsp;itself. For&nbsp;example, 15 is a composite number. It has factors 1,<a class=\"more-link\" href=\"https:\/\/7thclass.deltapublications.in\/index.php\/a-1-prime-or-composite\/\">Continue reading <span class=\"screen-reader-text\">&#8220;A.1 Prime or composite&#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-11","page","type-page","status-publish","hentry","entry"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/11","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=11"}],"version-history":[{"count":55,"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/11\/revisions"}],"predecessor-version":[{"id":16790,"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/11\/revisions\/16790"}],"wp:attachment":[{"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/media?parent=11"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}