{"id":258,"date":"2022-04-12T10:02:05","date_gmt":"2022-04-12T10:02:05","guid":{"rendered":"http:\/\/7thclass.deltapublications.in\/?page_id=258"},"modified":"2025-03-26T09:01:45","modified_gmt":"2025-03-26T09:01:45","slug":"l-10-simple-interest","status":"publish","type":"page","link":"https:\/\/7thclass.deltapublications.in\/index.php\/l-10-simple-interest\/","title":{"rendered":"L.10 Simple interest"},"content":{"rendered":"\n<h2 class=\"wp-block-heading has-text-align-center has-text-color\" style=\"color:#00056d;text-transform:uppercase\"><strong> Simple interest<\/strong><\/h2>\n\n\n\n<p class=\"has-text-color has-huge-font-size\" style=\"color:#74008b\">Key notes:<\/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:#dadff8\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<p>i = prt<br>i is the interest earned<br>p is the principal (starting amount)<br>r is the interest rate expressed as a decimal<br>t is the time in years<\/p>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-group has-background\" style=\"background-color:#f9e0e0\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<p>i = prt<br>i is the interest earned<br>p is the principal (starting amount)<br>r is the interest rate expressed as a decimal<br>t is the time in years<\/p>\n\n\n\n<p>To find the total amount in an account, calculate the interest and then add it to the principal.<\/p>\n<\/div><\/div>\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-background\" style=\"background-color:#ddf7d6\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<div class=\"wp-block-group\"><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<div class=\"wp-block-group\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<p class=\"has-text-color\" style=\"color:#b00012\">\u25b6\ufe0f <strong>Peter has \u20b980 in a savings account that earns 10% interest per year. The interest is not compounded. How much interest will he earn in 1 year?<\/strong><\/p>\n\n\n\n<p>Use the formula&nbsp;<em>i<\/em>&nbsp;=&nbsp;<em>prt<\/em>, where&nbsp;<em>i<\/em>&nbsp;is the interest earned,&nbsp;<em>p<\/em>&nbsp;is the principal (starting amount),&nbsp;<em>r<\/em>&nbsp;is the interest rate expressed as a decimal, and&nbsp;<em>t<\/em>&nbsp;is the time in years.<\/p>\n<\/div><\/div>\n\n\n\n<p>\u20b9_____<\/p>\n<\/div><\/div>\n<\/div><\/div>\n\n\n\n<p>Write the rate as a decimal.<\/p>\n\n\n\n<p>10 % = 0.1<\/p>\n\n\n\n<p>Calculate the interest earned.<\/p>\n\n\n\n<p>i = prt<\/p>\n\n\n\n<p>= \u20b980 \u00b7 0.1 \u00b7 1<\/p>\n\n\n\n<p>= \u20b98<\/p>\n\n\n\n<p>The interest will be \u20b98.<\/p>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-group has-background\" style=\"background-color:#f7e7da\"><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\" style=\"color:#b00012\">\u25b6\ufe0f <strong>Addison has \u20b940 in a savings account that earns 5% interest per year. The interest is not compounded. How much interest will she earn in 1 year?<\/strong><\/p>\n\n\n\n<p>Use the formula&nbsp;<em>i<\/em>&nbsp;=&nbsp;<em>prt<\/em>, where&nbsp;<em>i<\/em>&nbsp;is the interest earned,&nbsp;<em>p<\/em>&nbsp;is the principal (starting amount),&nbsp;<em>r<\/em>&nbsp;is the interest rate expressed as a decimal, and&nbsp;<em>t<\/em>&nbsp;is the time in years.<\/p>\n\n\n\n<p>\u20b9______<\/p>\n<\/div><\/div>\n\n\n\n<p>Write the rate as a decimal.<\/p>\n\n\n\n<p>5 % = 0.05<\/p>\n\n\n\n<p>Calculate the interest earned.<\/p>\n\n\n\n<p>i = prt<\/p>\n\n\n\n<p>= \u20b940 \u00b7 0.05 \u00b7 1<\/p>\n\n\n\n<p>= \u20b92<\/p>\n\n\n\n<p>The interest will be \u20b92.<\/p>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-group has-background\" style=\"background-color:#f8cdcd\"><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\" style=\"color:#b00012\">\u25b6\ufe0f <strong>Trevor has \u20b920 in a savings account. The interest rate is 5% per year and is not compounded. How much will he have in total in 1 year?<\/strong><\/p>\n\n\n\n<p>Use the formula&nbsp;<em>i<\/em>&nbsp;=&nbsp;<em>prt<\/em>, where&nbsp;<em>i<\/em>&nbsp;is the interest earned,&nbsp;<em>p<\/em>&nbsp;is the principal (starting amount),&nbsp;<em>r<\/em>&nbsp;is the interest rate expressed as a decimal, and&nbsp;<em>t<\/em>&nbsp;is the time in years.<\/p>\n\n\n\n<p>\u20b9______<\/p>\n<\/div><\/div>\n\n\n\n<p>Write the rate as a decimal.<\/p>\n\n\n\n<p>5 % = 0.05<\/p>\n\n\n\n<p>Calculate the interest earned.<\/p>\n\n\n\n<p>i = prt<\/p>\n\n\n\n<p>= \u20b920 \u00b7 0.05 \u00b7 1<\/p>\n\n\n\n<p>= \u20b91<\/p>\n\n\n\n<p>Find the total amount by adding the interest to the principal.<\/p>\n\n\n\n<p>\u20b91 + \u20b920 = \u20b921<\/p>\n\n\n\n<p>The total amount will be \u20b921.00.<\/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<\/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\/89285\/530\/527\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Worksheet-1-2-27.png\" alt=\"\" class=\"wp-image-6553\" srcset=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Worksheet-1-2-27.png 500w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Worksheet-1-2-27-300x300.png 300w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Worksheet-1-2-27-150x150.png 150w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Worksheet-1-2-27-400x400.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\/36062\/237\/636\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Worksheet-1-1-1-27.png\" alt=\"\" class=\"wp-image-6554\" srcset=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Worksheet-1-1-1-27.png 500w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Worksheet-1-1-1-27-300x300.png 300w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Worksheet-1-1-1-27-150x150.png 150w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Worksheet-1-1-1-27-400x400.png 400w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><\/figure>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Simple interest Key notes: i = prti is the interest earnedp is the principal (starting amount)r is the interest rate expressed as a decimalt is the time in years i = prti is the interest earnedp is the principal (starting amount)r is the interest rate expressed as a decimalt is the time in years To<a class=\"more-link\" href=\"https:\/\/7thclass.deltapublications.in\/index.php\/l-10-simple-interest\/\">Continue reading <span class=\"screen-reader-text\">&#8220;L.10 Simple interest&#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-258","page","type-page","status-publish","hentry","entry"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.1.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"Simple interest Key notes: i = prti is the interest earnedp is the principal (starting amount)r is the interest rate expressed as 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