{"id":5257,"date":"2022-02-06T19:45:32","date_gmt":"2022-02-06T19:45:32","guid":{"rendered":"https:\/\/oryxlearning.com\/company\/?page_id=5257"},"modified":"2022-02-28T18:45:24","modified_gmt":"2022-02-28T18:45:24","slug":"estimate-sums","status":"publish","type":"page","link":"https:\/\/oryxlearning.com\/learn\/estimate-sums\/","title":{"rendered":"Estimate Sums"},"content":{"rendered":"[vc_section full_width=”stretch_row” content_placement=”middle” css=”.vc_custom_1633364343825{background-image: url(https:\/\/oryxlearning.com\/learn\/wp-content\/uploads\/2021\/10\/10-min-scaled.jpg?id=2121) !important;background-position: center !important;background-repeat: no-repeat !important;background-size: cover !important;}” el_id=”bg-sec”][vc_row full_width=”stretch_row_content” el_class=”faaaq”][vc_column width=”1\/12″][\/vc_column][vc_column width=”1\/2″][vc_row_inner content_placement=”middle” el_class=”topheadingg”][vc_column_inner width=”1\/6″][vc_single_image image=”2283″ img_size=”full”][\/vc_column_inner][vc_column_inner width=”5\/6″][vc_column_text]\n<h5>Estimate Sums<\/h5>\n[\/vc_column_text][\/vc_column_inner][\/vc_row_inner][vc_column_text el_class=”headingnew”]Concept[\/vc_column_text][vc_column_text]Estimation of a number is a reasonable guess of the actual value to make calculations easier and realistic. This is obtained by rounding off the numbers involved in the calculation and getting a quick and rough answer. Sometimes we when we add two big numbers, we don’t really want to know the exact sum. We just want to find a quick estimate. We can quickly estimate a sum by rounding each of the addends and adding them together.[\/vc_column_text][vc_column_text el_class=”headingnew”]Rules[\/vc_column_text][vc_column_text]To get an estimate of the sum, round off all the numbers to the same place value, then add them.<\/p>\n<p><strong>How to Round Numbers<\/strong><br \/>\nThere are some basic rules that need to be followed for rounding numbers.<br \/>\nWhen rounding a number, you first need to ask: what are you rounding it to? Numbers can be rounded to the nearest ten, the nearest hundred, the nearest thousand, and so on.<\/p>\n<p>We first need to know what our rounding digit is. This digit is the one that will ultimately be affected.<br \/>\nAfter this, we need to check the digit to the right of this place which will decide the fate of the rounding digit.<br \/>\nIf the number you are rounding is followed by 0, 1, 2, 3, or 4, we do not change the rounding digit. However, all the digits to the right of the rounding digit are changed to 0.<br \/>\nIf the number you are rounding is followed by 5, 6, 7, 8, or 9, we increase the rounding digit by 1, and all the digits to the right of the rounding digit are changed to 0.<\/p>\n<p><strong>Rounding Numbers to the Nearest Ten<\/strong><br \/>\nRounding numbers to the nearest ten means we need to check the digit to the right of the tens place, that is the ones place. For example, when we round the number 3186 to the nearest ten, it becomes 3190.<\/p>\n<p><strong>Rounding Numbers to the Nearest Hundred<\/strong><br \/>\nRounding numbers to the nearest hundred means we need to check the digit to the right of the hundreds place, that is, the tens place. For example, when 8453 is rounded to the nearest hundred, it becomes 8500.[\/vc_column_text][vc_column_text el_class=”headingnew”]Example[\/vc_column_text][vc_column_text]<strong><span style=\"color: #16a085;\">Estimate<\/span> 86 + 23.<br \/>\n<\/strong>[\/vc_column_text][vc_column_text el_class=”headingnew”]Solution[\/vc_column_text][vc_column_text]To get an estimate of the sum, round off all the numbers to the same place value, then add them.<\/p>\n<p>86 (Round to the nearest 10) \u2192 90<\/p>\n<p>23 (Round to the nearest 10) \u2192 20<\/p>\n<p>Estimated Sum:<br \/>\n90 + 20 = <span style=\"color: red;\"><strong>110<\/strong><\/span>[\/vc_column_text][vc_column_text el_class=”headingnew”]Practice Estimate Sums[\/vc_column_text][vc_row_inner el_class=”boxxborder”][vc_column_inner][vc_column_text]\n<h5 style=\"margin-bottom: 10px;\">Practice Problem 1<\/h5>\n<p><span style=\"color: #16a085;\"><strong>Estimate 913 + 756.<\/strong><\/span><br \/>\nRound both numbers to the nearest hundred and then add.<br \/>\n<a href=\"https:\/\/en.oryxlearning.com\/question\/maths\/4th-grade\/estimating-sums-by-rounding\"><img loading=\"lazy\" class=\"alignnone wp-image-5259 size-full\" style=\"margin-top: 10px;\" src=\"https:\/\/oryxlearning.com\/learn\/wp-content\/uploads\/2021\/11\/9-16.png\" alt=\"Estimate Sums Practice Problem 1\" width=\"298\" height=\"88\" \/><\/a><\/p>\n[\/vc_column_text][vc_single_image image=”2159″ img_size=”full” alignment=”right” onclick=”custom_link” link=”https:\/\/en.oryxlearning.com\/question\/maths\/4th-grade\/estimating-sums-by-rounding”][\/vc_column_inner][\/vc_row_inner][vc_empty_space][vc_row_inner el_class=”boxxborder”][vc_column_inner][vc_column_text]\n<h5 style=\"margin-bottom: 10px;\">Practice Problem 2<\/h5>\n<p><span style=\"color: #16a085;\"><strong>Estimate 32 + 29.<\/strong><\/span><br \/>\nRound both numbers to the nearest ten and then add.<br \/>\n<a href=\"https:\/\/en.oryxlearning.com\/question\/maths\/4th-grade\/estimating-sums-by-rounding\"><img loading=\"lazy\" class=\"alignnone wp-image-5261 size-full\" style=\"margin-top: 10px;\" src=\"https:\/\/oryxlearning.com\/learn\/wp-content\/uploads\/2021\/11\/10-11.png\" alt=\"Estimate Sums Practice Problem 2\" width=\"170\" height=\"35\" \/><\/a><\/p>\n[\/vc_column_text][vc_single_image image=”2159″ img_size=”full” alignment=”right” onclick=”custom_link” link=”https:\/\/en.oryxlearning.com\/question\/maths\/4th-grade\/estimating-sums-by-rounding”][\/vc_column_inner][\/vc_row_inner][vc_empty_space][vc_row_inner el_class=”boxxborder”][vc_column_inner][vc_column_text]\n<h5 style=\"margin-bottom: 10px;\">Practice Problem 3<\/h5>\n<p><span style=\"color: #16a085;\"><strong>Estimate the sum by rounding each number to the nearest thousand.<\/strong><\/span><br \/>\n<a href=\"https:\/\/en.oryxlearning.com\/question\/maths\/4th-grade\/estimating-sums-by-rounding\"><img loading=\"lazy\" class=\"alignnone wp-image-5263 size-full\" style=\"margin-top: 10px;\" src=\"https:\/\/oryxlearning.com\/learn\/wp-content\/uploads\/2021\/11\/11-11.png\" alt=\"Estimate Sums Practice Problem 3\" width=\"233\" height=\"89\" \/><\/a><\/p>\n[\/vc_column_text][vc_single_image image=”2159″ img_size=”full” alignment=”right” onclick=”custom_link” link=”https:\/\/en.oryxlearning.com\/question\/maths\/4th-grade\/estimating-sums-by-rounding”][\/vc_column_inner][\/vc_row_inner][vc_empty_space][vc_row_inner el_class=”boxxborder”][vc_column_inner][vc_column_text]\n<h5 style=\"margin-bottom: 10px;\">Practice Problem 4<\/h5>\n<p><span style=\"color: #16a085;\"><strong>A meat shop sold 18,606 kilograms of beef and 35,217 kilograms of mutton in a year. About how many kilograms of meat were sold in total?<\/strong><\/span><br \/>\nRound both numbers to the nearest thousand and then add.<br \/>\n<a href=\"https:\/\/en.oryxlearning.com\/question\/maths\/4th-grade\/solving-word-problems-by-estimating-sums\"><img loading=\"lazy\" class=\"alignnone wp-image-5265 size-full\" style=\"margin-top: 10px;\" src=\"https:\/\/oryxlearning.com\/learn\/wp-content\/uploads\/2021\/11\/12-10.png\" alt=\"Estimate Sums Practice Problem 4\" width=\"151\" height=\"39\" \/><\/a><\/p>\n[\/vc_column_text][vc_single_image image=”2159″ img_size=”full” alignment=”right” onclick=”custom_link” link=”https:\/\/en.oryxlearning.com\/question\/maths\/4th-grade\/solving-word-problems-by-estimating-sums”][\/vc_column_inner][\/vc_row_inner][vc_empty_space][\/vc_column][vc_column width=”1\/3″ css=”.vc_custom_1633369011398{margin-bottom: 50px !important;}”][vc_row_inner el_class=”stickynotee”][vc_column_inner][vc_single_image image=”2265″ img_size=”full” alignment=”center” css_animation=”fadeIn” css=”.vc_custom_1633509989314{border-radius: 10px !important;}” el_class=”stickypin”][vc_column_text]<strong>Estimation<\/strong> means approximating a quantity to the required accuracy.[\/vc_column_text][\/vc_column_inner][\/vc_row_inner][vc_column_text el_class=”boxxborder2″]<span style=\"color: #ed5600;\"><strong>Pre-requisite Skills<\/strong><\/span><br \/>\n<a href=\"https:\/\/en.oryxlearning.com\/question\/maths\/2nd-grade\/estimation-G2\"><span style=\"color: #ed5600;\">Estimation<\/span><\/a><br \/>\n<a href=\"https:\/\/en.oryxlearning.com\/question\/maths\/3rd-grade\/rounding-whole-numbers-to-nearest-ten-and-hundred\"><span style=\"color: #ed5600;\">Rounding Whole Numbers to Nearest Ten and Hundred<\/span><\/a><br \/>\n<a href=\"https:\/\/en.oryxlearning.com\/question\/maths\/3rd-grade\/rounding-whole-numbers-to-nearest-thousand\"><span style=\"color: #ed5600;\">Rounding Whole Numbers to Nearest Thousand<\/span><\/a><br \/>\n<a href=\"https:\/\/en.oryxlearning.com\/question\/maths\/3rd-grade\/problems-solving-estimate-or-exact-answer\"><span style=\"color: #ed5600;\">Problems Solving – Estimate or Exact Answer<\/span><\/a>[\/vc_column_text][vc_column_text el_class=”boxxborder2″ css=”.vc_custom_1637217470834{border-top-width: 6px !important;border-right-width: 6px !important;border-bottom-width: 6px !important;border-left-width: 6px !important;background-position: center !important;background-repeat: no-repeat !important;background-size: contain !important;border-left-color: #333399 !important;border-left-style: solid !important;border-right-color: #333399 !important;border-right-style: solid !important;border-top-color: #333399 !important;border-top-style: solid !important;border-bottom-color: #333399 !important;border-bottom-style: solid !important;border-radius: 35px !important;}”]<span style=\"color: #333399;\"><strong>Related Skills<\/strong><\/span><br \/>\n<a href=\"https:\/\/en.oryxlearning.com\/question\/maths\/2nd-grade\/estimate-difference\"><span style=\"color: #333399;\">Estimate difference<\/span><\/a><br \/>\n<a href=\"https:\/\/en.oryxlearning.com\/question\/maths\/4th-grade\/estimate-products\"><span style=\"color: #333399;\">Estimate Products<\/span><\/a><br \/>\n<a href=\"https:\/\/en.oryxlearning.com\/question\/maths\/6th-grade\/estimate-products-of-fractions\"><span style=\"color: #333399;\">Estimate Products of Fractions<\/span><\/a><br \/>\n<a href=\"https:\/\/en.oryxlearning.com\/question\/maths\/4th-grade\/estimate-products-word-problems\"><span style=\"color: #333399;\">Estimate Products – Word Problems<\/span><\/a><br \/>\n<a href=\"https:\/\/en.oryxlearning.com\/question\/maths\/4th-grade\/estimate-quotients\"><span style=\"color: #333399;\">Estimate Quotients<\/span><\/a><br \/>\n<a href=\"https:\/\/en.oryxlearning.com\/question\/maths\/4th-grade\/estimating-decimals-sum-and-difference\"><span style=\"color: #333399;\">Estimating Decimals Sum and Difference<\/span><\/a><br \/>\n<a href=\"https:\/\/en.oryxlearning.com\/question\/maths\/5th-grade\/rounding-fractions\"><span style=\"color: #333399;\">Rounding Fractions<\/span><\/a><br \/>\n<a href=\"https:\/\/en.oryxlearning.com\/question\/maths\/5th-grade\/word-problems-estimate-fractions\"><span style=\"color: #333399;\">Word problems – Estimate fractions<\/span><\/a><br \/>\n<a href=\"https:\/\/en.oryxlearning.com\/question\/maths\/6th-grade\/estimate-sums-and-difference-of-mixed-numbers\"><span style=\"color: #333399;\">Estimate Sums and Difference of Mixed Numbers<\/span><\/a>[\/vc_column_text][vc_row_inner equal_height=”yes” el_class=”btninlinespacing”][vc_column_inner][vc_btn title=”Grade 1″ color=”warning” link=”url:https%3A%2F%2Foryxlearning.com%2Fgrade%2F1st-grade%2Fmaths|title:Grade%201%20Math||”][vc_btn title=”Grade 2″ color=”danger” 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el_class=”btninlinespacing”][vc_column_inner][vc_btn title=”Estimation” color=”warning” link=”url:https%3A%2F%2Fen.oryxlearning.com%2Ftopics%2Fmaths%2Festimation|title:Estimation||”][vc_btn title=”Word Problems” color=”danger” link=”url:https%3A%2F%2Fen.oryxlearning.com%2Ftopics%2Fmaths%2Fword-problems|title:Word%20Problems||”][\/vc_column_inner][\/vc_row_inner][\/vc_column][\/vc_row][\/vc_section]\n","protected":false},"excerpt":{"rendered":"<p>[vc_section full_width=”stretch_row” content_placement=”middle” css=”.vc_custom_1633364343825{background-image: url(https:\/\/oryxlearning.com\/learn\/wp-content\/uploads\/2021\/10\/10-min-scaled.jpg?id=2121) !important;background-position: center !important;background-repeat: no-repeat !important;background-size: cover !important;}” el_id=”bg-sec”][vc_row full_width=”stretch_row_content” el_class=”faaaq”][vc_column width=”1\/12″][\/vc_column][vc_column width=”1\/2″][vc_row_inner content_placement=”middle” el_class=”topheadingg”][vc_column_inner width=”1\/6″][vc_single_image image=”2283″ img_size=”full”][\/vc_column_inner][vc_column_inner width=”5\/6″][vc_column_text] Estimate Sums [\/vc_column_text][\/vc_column_inner][\/vc_row_inner][vc_column_text el_class=”headingnew”]Concept[\/vc_column_text][vc_column_text]Estimation of a number is a reasonable guess of the actual value to make calculations easier and realistic. This is obtained by rounding off the numbers involved in the […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v17.0 (Yoast SEO v17.6) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Estimate Sums | Oryx Learning<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/oryxlearning.com\/learn\/estimate-sums\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Estimate Sums\" \/>\n<meta property=\"og:description\" content=\"[vc_section full_width=”stretch_row” content_placement=”middle” css=”.vc_custom_1633364343825{background-image: url(https:\/\/oryxlearning.com\/learn\/wp-content\/uploads\/2021\/10\/10-min-scaled.jpg?id=2121) !important;background-position: center !important;background-repeat: no-repeat !important;background-size: cover !important;}” el_id=”bg-sec”][vc_row full_width=”stretch_row_content” el_class=”faaaq”][vc_column width=”1\/12″][\/vc_column][vc_column width=”1\/2″][vc_row_inner content_placement=”middle” el_class=”topheadingg”][vc_column_inner width=”1\/6″][vc_single_image image=”2283″ img_size=”full”][\/vc_column_inner][vc_column_inner width=”5\/6″][vc_column_text] Estimate Sums [\/vc_column_text][\/vc_column_inner][\/vc_row_inner][vc_column_text el_class=”headingnew”]Concept[\/vc_column_text][vc_column_text]Estimation of a number is a reasonable guess of the actual value to make calculations easier and realistic. 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