{"id":1046,"date":"2020-07-03T13:40:00","date_gmt":"2020-07-03T05:40:00","guid":{"rendered":"https:\/\/www.study-together.com\/edu\/?page_id=1046"},"modified":"2021-01-16T10:05:24","modified_gmt":"2021-01-16T02:05:24","slug":"approximate-values-estimation","status":"publish","type":"page","link":"https:\/\/www.study-together.com\/edu\/secondary\/form1_maths\/approximate-values-estimation\/","title":{"rendered":"6. \u8fd1\u4f3c\u503c\u8207\u4f30\u7b97 (Approximate values &#038; estimation)"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"1046\" class=\"elementor elementor-1046\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-bf6310b elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"bf6310b\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-66 elementor-top-column elementor-element elementor-element-01d06c6\" data-id=\"01d06c6\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-62432fd elementor-widget elementor-widget-text-editor\" data-id=\"62432fd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>\u4f30\u7b97\u4fc2\u6307\u4ee5\u9069\u7576\u7684\u8fd1\u4f3c\u503c\u4ee3\u66ff\u6578\u5f0f\u4e2d\u7684\u67d0\u4e9b\u6578\u503c\uff0c\u5f9e\u800c\u7c21\u5316\u8a08\u7b97\u5f97\u4e00\u500b\u8fd1\u4f3c\u7d50\u679c\u5605\u904e\u7a0b\u3002\u7c21\u55ae\u569f\u8b1b\u5373\u4fc2\u300c\u5514\u99db\u8a08\u5f97\u5481\u6e96\u300d\u3002<\/p><p>\u4f8b1\uff1a\u00a0 \\(9.999 + 4.9999 \\approx 10 + 5 = 15 \\)<\/p><p>\u4e0a\u9762\u7b97\u5f0f\u4e2d\u7684\u300c\\(\\approx\\)\u300d\u4fc2\u6307\u300c\u5927\u7d04\u7b49\u65bc\u300d\u3002<\/p><h2>6.1\u00a0 \u4f5c\u51fa\u4f30\u7b97\u7684\u539f\u56e0<\/h2><ul><li style=\"list-style-type: none;\"><ul><li>\u65b9\u4fbf\u904b\u7b97\uff1b<\/li><li>\u6578\u503c\u4e0d\u8a73\uff1b<\/li><li>\u4f30\u8a08\u503c\u6bd4\u771f\u78ba\u503c\u66f4\u5bb9\u6613\u7406\u89e3\uff1b<\/li><li>\u91cf\u5ea6\u65b9\u6cd5\u6709\u504f\u5dee\u53ca\u91cf\u5ea6\u5de5\u5177\u672a\u5920\u6e96\u78ba\uff1b<\/li><li>\u900f\u904e\u4f30\u7b97\u7d71\u4e00\u6578\u503c\u7684\u6e96\u78ba\u5ea6\uff1b<\/li><\/ul><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-90a13aa elementor-widget elementor-widget-text-editor\" data-id=\"90a13aa\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2>6.2\u00a0 \u4f30\u7b97\u7684\u65b9\u6cd5<\/h2><h3>6.2.1\u00a0\u00a0\u00a0\u00a0 \u56db\u62fe\u4e94\u5165\u6cd5 (Rounding Off)<\/h3><p>\u4f8b2\uff1a\u00a0 \\(\\quad 648 \\approx 650 \\quad (\u6e96\u78ba\u81f3\u5341\u4f4d) \\)<br \/>\u7576\u8981\u6e96\u78ba\u5230\u5341\u4f4d\uff0c\u5373\u8fd1\u4f3c\u503c\u4fc2\u300c\u5e7e\u591a\u5e7e\u591a\u5341\u300d\u3002\u6240\u4ee5\u8981\u505a\u5605\u5622\u4fc2\u7747\u4f4f\u500b\u300c\u500b\u4f4d\u300d\uff0c\u5927\u904e\u6216\u7b49\u65bc5\u5c31\u6bd4\u591a\u500b10\u500b\u6578\uff0c\u7d30\u904e5\u5c31\u5514\u8981\u3002<\/p><p>\u4f8b3\uff1a\u00a0 \\(\\quad 358 \\approx 400 \\quad (\u6e96\u78ba\u81f3\u767e\u4f4d) \\)<br \/>\u7576\u8981\u6e96\u78ba\u5230\u767e\u5341\u4f4d\uff0c\u5373\u8fd1\u4f3c\u503c\u4fc2\u300c\u5e7e\u591a\u5e7e\u591a\u767e\u300d\u3002\u6240\u4ee5\u8981\u505a\u5605\u5622\u4fc2\u7747\u4f4f\u500b\u300c\u5341\u4f4d\u300d\u5605\u6578\u5b57\uff0c\u5927\u904e\u6216\u7b49\u65bc5\u5c31\u6bd4\u591a\u500b100\u500b\u6578\uff0c\u7d30\u904e5\u5c31\u5514\u8981\u3002<\/p><h3>6.2.2\u00a0\u00a0\u00a0\u00a0 \u6700\u5de6\u6578\u5b57\u6cd5 (Front-end Method)<\/h3><p>\u6700\u5de6\u6578\u5b57\u6cd5\u597d\u7c21\u55ae\uff0c\u5c31\u5481\u651e\u6700\u5de6\u908a\u5605\u6578\u5b57\uff0c\u4e4b\u5f8c\u5605\u8b8a\u6652\u505a0\u3002\u56e0\u70ba\u4fc2\u4e00\u500b\u597d\u7c97\u7565\u5605\u651e\u8fd1\u4f3c\u503c\u65b9\u6cd5\uff0c\u6240\u4ee5\u4f30\u7b97\u51fa\u569f\u5605\u7d50\u679c\u53ef\u80fd\u540c\u771f\u5be6\u6578\u503c\u6709\u8f03\u5927\u5605\u5dee\u8ddd(\u5373\u8aa4\u5dee)\u3002<\/p><p>\u4f8b4\uff1a\\(\\quad 44.5 \\approx 40 \\)<\/p><p>\u4f8b5\uff1a\\(\\quad 195 \\approx 100 \\)<\/p><p>\u4f8b6\uff1a\\(\\quad 1.23 \\approx 1 \\)<\/p><p>\u4f8b7\uff1a\\(\\quad 0.89 \\approx 0 \\)<\/p><h3>6.2.3\u00a0\u00a0\u00a0\u00a0 \u76f8\u5bb9\u6578\u5b57\u6cd5 (Compatible Numbers)<\/h3><p>\u7c21\u55ae\u569f\u8b1b\uff0c\u76f8\u5bb9\u6578\u5b57\u6cd5\u4fc2\u6307\u55ba\u8a08\u7b97\u300c\u52a0\u6e1b\u4e58\u9664\u300d\u6642\uff0c\u900f\u904e\u9078\u53d6\u8fd1\u4f3c\u503c\u569f\u52a0\u5feb\u8a08\u7b97\u51fa\u4f30\u7b97\u3002<\/p><p>\u4f8b8\uff1a\\(\\quad \u4f30\u8a08 963 \\div 2.89 + 7 \\)<br \/>\u89e3\uff1a\u5982\u679c\u75762.89\u7684\u8fd1\u4f3c\u503c\u4fc2 3\uff0c963 \u53ef\u88ab 3 \u6574\u9664\uff0c\u6240\u4ee5963\u53ca3\u70ba\u4e00\u7d44\u76f8\u5bb9\u6578\u5b57\u3002<\/p><p>\\(\\begin{align} \\quad \\quad &amp; 963 \\div 2.89 + 7 \\\\<br \/>&amp; \\approx 963 \\div 3 + 7 \\\\<br \/>&amp; = 321 + 7 \\\\<br \/>&amp; = 328<br \/>\\end{align}\\)<\/p><h3>6.2.4\u00a0\u00a0\u00a0\u00a0 \u96c6\u4e2d\u6578\u5b57\u6cd5 (Clustering)<\/h3><p>\u7576\u6211\u5730\u767c\u73fe\u55ba\u8981\u8a08\u7b97\u5605\u6578\u5165\u9762\u597d\u591a\u500b\u6578\u5b57\u90fd\u4fc2\u5dee\u5514\u591a\u5605\u6642\u5019\uff0c\u6211\u5730\u5c31\u53ef\u5728\u5229\u7528\u96c6\u4e2d\u6578\u5b57\u6cd5\uff0c\u7576\u55f0D\u6578\u5b57\u90fd\u4fc2\u540c\u4e00\u500b\u6578\u569f\u8a08\u3002<\/p><p>\u4f8b9\uff1a\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u4f30\u8a08 11.2 \u2013 2.3 \u2013 2.1 \u2013 2.05 \u2013 1.91 \u2013 2.51<br \/>\u89e3\uff1a\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u53d6 2 \u70ba\u96c6\u4e2d\u6578\u5b57<\/p><p>\\(\\begin{align} \\quad \\quad &amp; 11.2 \u2013 2.3 \u2013 2.1 \u2013 2.05 \u2013 1.91 \u2013 2.51 \\\\<br \/>&amp; \\approx 11.2 &#8211; 2 &#8211; 2 &#8211; 2 &#8211; 2 \\\\<br \/>&amp; = 11.2 &#8211; 2 \\times 5 \\\\<br \/>&amp; = 1.2 \\\\<br \/>\\end{align}\\)<\/p><p>\u4f8b10\uff1a\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u4f30\u7b97 43.3+42.8+43.5+42.7<br \/>\u89e3\uff1a\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u53d6 43 \u70ba\u96c6\u4e2d\u6578\u5b57<\/p><p>\\(\\begin{align} \\quad \\quad &amp; 43.3+42.8+43.5+42.7 \\\\<br \/>&amp; \\approx 43 \\times 4 \\\\<br \/>&amp; = 172<br \/>\\end{align}\\)<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-77baa51 elementor-widget elementor-widget-text-editor\" data-id=\"77baa51\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2>6.3\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u4f30\u7b97\u7684\u7b56\u7565<\/h2><p>\u55ba6.2\u5165\u9762\u8b1b\u89e3\u5497\u5e7e\u500b\u5c0d\u500b\u5225\u6578\u5b57\u5605\u4f30\u7b97\u65b9\u6cd5\u3002\u800c\u6240\u8b02\u5605\u300c\u7b56\u7565\u300d\u5176\u5be6\u4fc2\u6211\u5730\u9ede\u6a23\u53bb\u8655\u7406\u6210\u689d\u6578\u5f0f\u3002<\/p><h3>6.3.1\u00a0\u00a0\u00a0\u00a0 \u91cd\u6574\u6cd5\u00a0 (Reformulation)<\/h3><p>\u4f7f\u7528\u4efb\u4f55\u4f30\u7b97\u65b9\u6cd5\u5c07\u6578\u5f0f\u4e2d\u7684\u6578\u5b57\u5148\u4f5c\u4f30\u7b97\uff0c\u518d\u8a08\u7b97\u6578\u5f0f\u7684\u4f30\u8a08\u503c\u3002<\/p><p>\u9019\u53ef\u8aaa\u662f\u6700\u7c21\u55ae\u3001\u6700\u76f4\u63a5\u7684\u4f30\u7b97\u7b56\u7565\u3002<\/p><p>\u4f8b11\uff1a\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u4f30\u8a08 11.2 \u2013 2.3 \u2013 2.1 \u2013 2.05 \u2013 1.91 \u2013 2.51<br \/>\u89e3\uff1a\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u4f9d\u500b\u5176\u5be6\u4fc2\u4f8b9\u3002\u55ba\u4f8b9\u4e2d\u6211\u4fc2\u53ea\u4fc2\u7747\u4f4f\u5e7e\u500b\u540c2\u597d\u63a5\u8fd1\u5605\u6578\u5b57\u3002\u4f46\u6211\u5730\u53ef\u4ee5\u66f4\u7528\u4e00\u6b65\u5481\u7528\u56db\u6368\u4e94\u5165\u569f\u4f30\u7b97\u57cb\u500b11\u3002<\/p><p>\\(\\begin{align} \\quad \\quad &amp; 11.2 \u2013 2.3 \u2013 2.1 \u2013 2.05 \u2013 1.91 \u2013 2.51 \\\\<br \/>&amp; \\approx 11 &#8211; 2 &#8211; 2 &#8211; 2 &#8211; 2 \\\\<br \/>&amp; = 11 &#8211; 2 \\times 5 \\\\<br \/>&amp; = 1 \\\\<br \/>\\end{align}\\)<\/p><p>\u540c\u5b78\u53ef\u80fd\u6703\u89ba\u5f97\u591a\u6b64\u4e00\u8209\u3002\u7121\u932f\uff0c\u55ba\u4f9d\u500b\u7c21\u55ae\u4f8b\u5b50\u4e2d\u5514\u4fc2\u4f30\u7b9711.2\u90fd\u7121\u554f\u984c\u3002\u4f9d\u347c\u4f8b\u5b50\u53ea\u4fc2\u8b1b\u6bd4\u5927\u5bb6\u77e5\u6211\u5730\u53ef\u4ee5\u540c\u6642\u7528\u5e7e\u500b\u65b9\u6cd5\u569f\u4f30\u7b97\u6578\u5f0f\u4e2d\u5605\u6578\u5b57\u3002<\/p><h3>6.3.2\u00a0\u00a0\u00a0\u00a0 \u88dc\u511f\u6cd5 (Compensation)<\/h3><p>\u4f7f\u7528\u6b64\u7b56\u7565\u5c0d\u521d\u6b65\u7684\u4f30\u8a08\u503c\u4f5c\u51fa\u88dc\u511f\u6027\u7684\u8abf\u6574\uff0c\u5f9e\u800c\u63d0\u9ad8\u4f30\u7b97\u7684\u6e96\u78ba\u6027\u3002<\/p><p>\u4f8b12\uff1a\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u4f30\u7b97 \\(11285 \\times 31.7\\)<br \/>\u89e3\uff1a\u00a0<br \/>\\(\\begin{align} \\quad \\quad &amp;11285 \\times 31.7 \\\\<br \/>&amp; \\approx 10000 \\times 32 + 1300 \\times 30\u00a0 \\quad \\quad ( 1300 \\times 30 \u70ba\u88dc\u511f\u6027\u8abf\u6574) \\\\<br \/>&amp; = 320000 +39000 \\\\<br \/>&amp; = 359000<br \/>\\end{align}\\)<\/p><h3>6.3.3\u00a0\u00a0\u00a0\u00a0 \u8f49\u79fb\u6cd5 (Translation)<\/h3><p>\u8f49\u79fb\u6cd5\u4fc2\u5c07\u6578\u5f0f\u4e2d\u5605\u6578\u5b57\u6216\u904b\u7b97\u904e\u7a0b\u52a0\u4ee5\u8abf\u52d5\u4ee4\u6574\u500b\u6578\u5f0f\u66f4\u6613\u4f30\u7b97\u3002<\/p><p>\u4f8b13\uff1a\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u4f30\u7b97 11.5 + 25.7 + 54 + 77.3 + 92.9 + 44.7<br \/>\u89e3\uff1a\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <br \/>\\(\\begin{align} \\quad \\quad &amp; 11.5 + 25.7 + 54 + 77.3 + 92.9 + 44.7 \\\\<br \/>&amp; \\approx (11.5 + 92.9) + (25.7 + 77.3) + (54 + 44.7) \\\\<br \/>&amp; \\approx 100 + 100 + 100 \\\\<br \/>&amp; = 300<br \/>\\end{align}\\)<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f95ff6f elementor-widget elementor-widget-text-editor\" data-id=\"f95ff6f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2>6.4\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u4e0a\u6368\u5165\u6cd5 \/ \u4e0b\u6368\u5165\u6cd5 (Rounding Off With Over-estimates \/ Under-estimates) (Rounding Up \/ Rounding Down)<\/h2><p>\u4e00\u822c\u6211\u5730\u55ba\u505a\u4f30\u7b97\u5605\u6642\u5019\u53ea\u4fc2\u60f3\u77e5\u500b\u7d50\u679c\u592a\u7d04\u4fc2\u5e7e\u591a\u3002\u4f46\u55ba\u67d0\u4e9b\u7279\u5225\u60c5\u5f62\u4e0b\uff0c\u6211\u5730\u4fc2\u8981\u6839\u64da\u5be6\u969b\u60c5\u6cc1\u7684\u9700\u8981\u800c\u903c\u4f4f\u53bb\u53d6\u7565\u5927\u6216\u7565\u5c0f\u5605\u4f30\u7b97\u503c\u3002<\/p><ul><li style=\"list-style-type: none;\"><ul><li><strong>\u4e0a\u6368\u5165\u6cd5<\/strong>\uff1a\u7576\u9700\u8981\u4e00\u500b\u7565\u5927\u7684\u4f30\u8a08\u503c\u6642\u4f7f\u7528\uff08<strong>\u4f30\u503c\u5fc5\u6bd4\u771f\u5be6\u503c\u5927<\/strong>\uff09\u3002<br \/><strong>\u4e0b\u6368\u5165\u6cd5<\/strong>\uff1a\u7576\u9700\u8981\u4e00\u500b\u7565\u5c0f\u7684\u4f30\u8a08\u503c\u6642\u4f7f\u7528\uff08<strong>\u4f30\u503c\u5fc5\u6bd4\u771f\u5be6\u503c\u5c0f<\/strong>\uff09\u3002<\/li><\/ul><\/li><\/ul><p>\u4f8b14\uff1a\u00a0\u00a0\u00a0\u00a0\u00a0 \u9673\u5148\u751f\u60f3\u8cfc\u8cb7\u4e00\u90e8\u50f9\u503c4500\u5143\u7684\u76f8\u6a5f\u3002\u82e5\u4ed6\u5728\u4e09\u6708\u4efd\u6bcf\u5929\u80fd\u5132\u84c4153\u5143\u3002\u4ed6\u4e09\u6708\u5f8c\u6709\u8db3\u5920\u91d1\u9322\u8cb7\u9019\u76f8\u6a5f\u55ce?<br \/>\u89e3\uff1a\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u5982\u8981\u4f7f\u7528\u4f30\u503c\uff0c\u6211\u5011\u5fc5\u9808\u4f7f\u7528\u4e0b\u62fe\u5165\u6cd5\u3002\u5426\u5247\uff0c\u5c31\u7b97\u4f30\u76f4\u5927\u65bc4500\u5143\uff0c\u6211\u5011\u4e5f\u4e0d\u80fd\u78ba\u4fdd\u9673\u5148\u751f\u7684\u5132\u84c4\u8db3\u5920\u8cfc\u8cb7\u76f8\u6a5f\u3002<\/p><p>\\(\\begin{align} \\quad \\quad &amp;\u4e09\u6708\u4efd\u7684\u5132\u84c4\u00a0 \\\\<br \/>&amp; = 153 \\times 31 \\\\<br \/>&amp; \\approx 150 \\times 30 \\\\<br \/>&amp; =4500\u5143<br \/>\\end{align}\\)<\/p><p>\u7531\u65bc\u4e0b\u62fe\u5165\u5f8c\u7684\u5132\u84c4\u76f8\u7b49\u65bc\u76f8\u6a5f\u7684\u50f9\u503c\uff0c\u9673\u5148\u751f\u4e09\u6708\u4efd\u7684\u5132\u84c4\u8db3\u5920\u8cb7\u8a72\u90e8\u76f8\u6a5f\u3002<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-af2124f elementor-widget elementor-widget-text-editor\" data-id=\"af2124f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>\u76f8\u95dc\u8ab2\u984c\uff1a<\/p><ul><li>\u5047\u5982\u540c\u5b78\u89ba\u5f97\u9019\u8ab2\u8b1b\u597d\u6613\u660e\uff0c\u5efa\u8b70\u7747\u57cb\u300c<a href=\"https:\/\/www.study-together.com\/edu\/secondary\/form2_maths\/approximation-errors\/\">\u8fd1\u4f3c\u8207\u8aa4\u5dee (Approximation &amp; Errors)<\/a>\u300d\u3002<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-d49a543 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"d49a543\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-inner-column elementor-element elementor-element-3fa46d0\" data-id=\"3fa46d0\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-4e65e9f elementor-widget elementor-widget-text-editor\" data-id=\"4e65e9f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/www.study-together.com\/edu\/secondary\/form1_maths\/using-percentages\/\"><i class=\"far fa-arrow-alt-circle-left\" aria-hidden=\"true\"><\/i> \u767e\u5206\u6cd5\u00a0<\/a>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-inner-column elementor-element elementor-element-9cc0033\" data-id=\"9cc0033\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-inner-column elementor-element elementor-element-53f0006\" data-id=\"53f0006\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-4ee4716 elementor-widget elementor-widget-text-editor\" data-id=\"4ee4716\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p style=\"text-align: right;\"><a href=\"https:\/\/www.study-together.com\/edu\/secondary\/form1_maths\/introduction-to-geometry\/\">\u5e7e\u4f55\u7c21\u4ecb <i class=\"far fa-arrow-alt-circle-right\" aria-hidden=\"true\"><\/i><\/a><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-top-column elementor-element elementor-element-4dab7a3\" data-id=\"4dab7a3\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-9451a60 elementor-widget elementor-widget-sidebar\" data-id=\"9451a60\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"sidebar.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"sidebar-box widget-oceanwp-custom-menu custom-menu-widget clr\"><style type=\"text\/css\">.ocean_custom_menu-2 > ul > li > a, .custom-menu-widget .ocean_custom_menu-2 .dropdown-menu .sub-menu li a.menu-link{font-size:16px;line-height:17px;}.custom-menu-widget .ocean_custom_menu-2.oceanwp-custom-menu > ul.click-menu .open-this{font-size:16px;}<\/style><h4 class=\"widget-title\">\u4e2d\u4e00\u6578\u5b78\u3010\u76ee\u9304\u3011<\/h4><div class=\"oceanwp-custom-menu clr ocean_custom_menu-2 left dropdown-hover\"><ul id=\"menu-form1mathstopics\" class=\"dropdown-menu sf-menu\"><li  id=\"menu-item-928\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-928\"><a href=\"https:\/\/www.study-together.com\/edu\/secondary\/form1_maths\/directed-numbers\/\" class=\"menu-link\">1. \u6709\u5411\u6578 (Directed Numbers)<\/a><\/li>\n<li  id=\"menu-item-929\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-929\"><a href=\"https:\/\/www.study-together.com\/edu\/secondary\/form1_maths\/algebraic-expressions-equations\/\" class=\"menu-link\">2. \u4ee3\u6578\u5f0f\u548c\u65b9\u7a0b\u5f0f (Algebraic Expressions &#038; Equations)<\/a><\/li>\n<li  id=\"menu-item-995\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-995\"><a href=\"https:\/\/www.study-together.com\/edu\/secondary\/form1_maths\/laws-of-integral-indices\/\" class=\"menu-link\">3. \u6307\u6578\u53ca\u9032\u5236 (Laws of integral indices)<\/a><\/li>\n<li  id=\"menu-item-1000\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-1000\"><a href=\"https:\/\/www.study-together.com\/edu\/secondary\/form1_maths\/polynomials\/\" class=\"menu-link\">4. \u591a\u9805\u5f0f (Polynomials)<\/a><\/li>\n<li  id=\"menu-item-1043\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-1043\"><a href=\"https:\/\/www.study-together.com\/edu\/secondary\/form1_maths\/using-percentages\/\" class=\"menu-link\">5. \u767e\u5206\u6cd5 (Using percentages)<\/a><\/li>\n<li  id=\"menu-item-1053\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-1053\"><a href=\"https:\/\/www.study-together.com\/edu\/secondary\/form1_maths\/approximate-values-estimation\/\" class=\"menu-link\">6. \u8fd1\u4f3c\u503c\u8207\u4f30\u7b97 (Approximate values &#038; estimation)<\/a><\/li>\n<li  id=\"menu-item-1071\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-1071\"><a href=\"https:\/\/www.study-together.com\/edu\/secondary\/form1_maths\/introduction-to-geometry\/\" class=\"menu-link\">7. \u5e7e\u4f55\u7c21\u4ecb (Introduction to Geometry)<\/a><\/li>\n<li  id=\"menu-item-1093\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-1093\"><a href=\"https:\/\/www.study-together.com\/edu\/secondary\/form1_maths\/symmetry-and-transformation\/\" class=\"menu-link\">8. \u5c0d\u7a31\u53ca\u8b8a\u63db (Symmetry and Transformation)<\/a><\/li>\n<li  id=\"menu-item-1109\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-1109\"><a href=\"https:\/\/www.study-together.com\/edu\/secondary\/form1_maths\/congruence-and-similarity\/\" class=\"menu-link\">9. \u5168\u7b49\u53ca\u76f8\u4f3c (Congruence and Similarity)<\/a><\/li>\n<li  id=\"menu-item-1120\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-1120\"><a href=\"https:\/\/www.study-together.com\/edu\/secondary\/form1_maths\/estimation-in-measurements\/\" class=\"menu-link\">10. \u91cf\u5ea6\u65b9\u9762\u7684\u4f30\u8a08 (Estimation in measurements)<\/a><\/li>\n<li  id=\"menu-item-1136\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-1136\"><a href=\"https:\/\/www.study-together.com\/edu\/secondary\/form1_maths\/area-and-volume\/\" class=\"menu-link\">11. \u9762\u7a4d\u53ca\u9ad4\u7a4d (Area and Volume)<\/a><\/li>\n<li  id=\"menu-item-1150\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-1150\"><a href=\"https:\/\/www.study-together.com\/edu\/secondary\/form1_maths\/introduction-to-coordinates\/\" class=\"menu-link\">12.   \u5750\u6a19\u7c21\u4ecb (Introduction to Coordinates)<\/a><\/li>\n<li  id=\"menu-item-1164\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-1164\"><a href=\"https:\/\/www.study-together.com\/edu\/secondary\/form1_maths\/introduction-to-statistics\/\" class=\"menu-link\">13.  \u7d71\u8a08\u7c21\u4ecb (Introduction to Statistics)<\/a><\/li>\n<li  id=\"menu-item-16138\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-16138\"><a href=\"https:\/\/www.study-together.com\/edu\/secondary\/exam_papers\/\" class=\"menu-link\">*** \u521d\u4e2d\u8a66\u5377 \/ \u8a66\u984c\u5eab ***<\/a><\/li>\n<\/ul><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>\u4f30\u7b97\u4fc2\u6307\u4ee5\u9069\u7576\u7684\u8fd1\u4f3c\u503c\u4ee3\u66ff\u6578\u5f0f\u4e2d\u7684\u67d0\u4e9b\u6578\u503c\uff0c\u5f9e\u800c\u7c21\u5316\u8a08\u7b97\u5f97\u4e00\u500b\u8fd1\u4f3c\u7d50\u679c\u5605\u904e\u7a0b\u3002\u7c21\u55ae\u569f\u8b1b\u5373\u4fc2\u300c\u5514\u99db\u8a08\u5f97\u5481\u6e96\u300d\u3002  [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":923,"menu_order":5,"comment_status":"closed","ping_status":"closed","template":"elementor_header_footer","meta":{"ocean_front_end_style_editor":"no","ocean_post_layout":"","ocean_both_sidebars_style":"","ocean_both_sidebars_content_width":0,"ocean_both_sidebars_sidebars_width":0,"ocean_sidebar":"0","ocean_second_sidebar":"0","ocean_disable_margins":"enable","ocean_add_body_class":"","ocean_shortcode_before_top_bar":"","ocean_shortcode_after_top_bar":"","ocean_shortcode_before_header":"","ocean_shortcode_after_header":"","ocean_has_shortcode":"","ocean_shortcode_after_title":"","ocean_shortcode_before_footer_widgets":"","ocean_shortcode_after_footer_widgets":"","ocean_shortcode_before_footer_bottom":"","ocean_shortcode_after_footer_bottom":"","ocean_display_top_bar":"default","ocean_display_header":"default","ocean_header_style":"","ocean_center_header_left_menu":"0","ocean_custom_header_template":"0","ocean_custom_logo":0,"ocean_custom_retina_logo":0,"ocean_custom_logo_max_width":0,"ocean_custom_logo_tablet_max_width":0,"ocean_custom_logo_mobile_max_width":0,"ocean_custom_logo_max_height":0,"ocean_custom_logo_tablet_max_height":0,"ocean_custom_logo_mobile_max_height":0,"ocean_header_custom_menu":"0","ocean_menu_typo_font_family":"0","ocean_menu_typo_font_subset":"","ocean_menu_typo_font_size":0,"ocean_menu_typo_font_size_tablet":0,"ocean_menu_typo_font_size_mobile":0,"ocean_menu_typo_font_size_unit":"px","ocean_menu_typo_font_weight":"","ocean_menu_typo_font_weight_tablet":"","ocean_menu_typo_font_weight_mobile":"","ocean_menu_typo_transform":"","ocean_menu_typo_transform_tablet":"","ocean_menu_typo_transform_mobile":"","ocean_menu_typo_line_height":0,"ocean_menu_typo_line_height_tablet":0,"ocean_menu_typo_line_height_mobile":0,"ocean_menu_typo_line_height_unit":"","ocean_menu_typo_spacing":0,"ocean_menu_typo_spacing_tablet":0,"ocean_menu_typo_spacing_mobile":0,"ocean_menu_typo_spacing_unit":"","ocean_menu_link_color":"","ocean_menu_link_color_hover":"","ocean_menu_link_color_active":"","ocean_menu_link_background":"","ocean_menu_link_hover_background":"","ocean_menu_link_active_background":"","ocean_menu_social_links_bg":"","ocean_menu_social_hover_links_bg":"","ocean_menu_social_links_color":"","ocean_menu_social_hover_links_color":"","ocean_disable_title":"default","ocean_disable_heading":"default","ocean_post_title":"","ocean_post_subheading":"","ocean_post_title_style":"","ocean_post_title_background_color":"","ocean_post_title_background":0,"ocean_post_title_bg_image_position":"","ocean_post_title_bg_image_attachment":"","ocean_post_title_bg_image_repeat":"","ocean_post_title_bg_image_size":"","ocean_post_title_height":0,"ocean_post_title_bg_overlay":0.5,"ocean_post_title_bg_overlay_color":"","ocean_disable_breadcrumbs":"default","ocean_breadcrumbs_color":"","ocean_breadcrumbs_separator_color":"","ocean_breadcrumbs_links_color":"","ocean_breadcrumbs_links_hover_color":"","ocean_display_footer_widgets":"default","ocean_display_footer_bottom":"default","ocean_custom_footer_template":"0","footnotes":""},"class_list":["post-1046","page","type-page","status-publish","hentry","entry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>6. \u8fd1\u4f3c\u503c\u8207\u4f30\u7b97 (Approximate values &amp; estimation) &#187; \u9f4a\u9f4a\u6eab<\/title>\n<meta name=\"description\" content=\"\u4f30\u7b97\u4fc2\u6307\u4ee5\u9069\u7576\u7684\u8fd1\u4f3c\u503c\u4ee3\u66ff\u6578\u5f0f\u4e2d\u7684\u67d0\u4e9b\u6578\u503c\uff0c\u5f9e\u800c\u7c21\u5316\u8a08\u7b97\u5f97\u4e00\u500b\u8fd1\u4f3c\u7d50\u679c\u5605\u904e\u7a0b\u3002\u7c21\u55ae\u569f\u8b1b\u5373\u4fc2\u300c\u5514\u99db\u8a08\u5f97\u5481\u6e96\u300d\u3002\u4f8b9.99999 + 4.999999 \u7d04\u7b49\u65bc15\u3002\u55ba\u4f9d\u8ab2\uff0c\u6211\u6703\u6559\u5927\u5bb6\u9ede\u89e3\u8981\u53bb\u4f5c\u4f30\u7b97\u3001\u6709\u54a9\u65b9\u6cd5\u53bb\u4f5c\u4f30\u7b97\u540c\u6709\u54a9\u7b56\u7565\u3002\u4e00D\u90fd\u5514\u6df1!\" \/>\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.study-together.com\/edu\/secondary\/form1_maths\/approximate-values-estimation\/\" \/>\n<meta property=\"og:locale\" content=\"zh_TW\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"6. \u8fd1\u4f3c\u503c\u8207\u4f30\u7b97 (Approximate values &amp; estimation) &#187; \u9f4a\u9f4a\u6eab\" \/>\n<meta property=\"og:description\" content=\"\u4f30\u7b97\u4fc2\u6307\u4ee5\u9069\u7576\u7684\u8fd1\u4f3c\u503c\u4ee3\u66ff\u6578\u5f0f\u4e2d\u7684\u67d0\u4e9b\u6578\u503c\uff0c\u5f9e\u800c\u7c21\u5316\u8a08\u7b97\u5f97\u4e00\u500b\u8fd1\u4f3c\u7d50\u679c\u5605\u904e\u7a0b\u3002\u7c21\u55ae\u569f\u8b1b\u5373\u4fc2\u300c\u5514\u99db\u8a08\u5f97\u5481\u6e96\u300d\u3002\u4f8b9.99999 + 4.999999 \u7d04\u7b49\u65bc15\u3002\u55ba\u4f9d\u8ab2\uff0c\u6211\u6703\u6559\u5927\u5bb6\u9ede\u89e3\u8981\u53bb\u4f5c\u4f30\u7b97\u3001\u6709\u54a9\u65b9\u6cd5\u53bb\u4f5c\u4f30\u7b97\u540c\u6709\u54a9\u7b56\u7565\u3002\u4e00D\u90fd\u5514\u6df1!\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.study-together.com\/edu\/secondary\/form1_maths\/approximate-values-estimation\/\" \/>\n<meta property=\"og:site_name\" content=\"\u9f4a\u9f4a\u6eab\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/-100355795002387\" \/>\n<meta property=\"article:modified_time\" content=\"2021-01-16T02:05:24+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.study-together.com\/edu\/wp-content\/uploads\/2020\/07\/homeSlide1_1600x800.webp\" \/>\n\t<meta property=\"og:image:width\" content=\"1600\" \/>\n\t<meta property=\"og:image:height\" content=\"800\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/webp\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.study-together.com\\\/edu\\\/secondary\\\/form1_maths\\\/approximate-values-estimation\\\/\",\"url\":\"https:\\\/\\\/www.study-together.com\\\/edu\\\/secondary\\\/form1_maths\\\/approximate-values-estimation\\\/\",\"name\":\"6. \u8fd1\u4f3c\u503c\u8207\u4f30\u7b97 (Approximate values & estimation) &#187; \u9f4a\u9f4a\u6eab\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.study-together.com\\\/edu\\\/#website\"},\"datePublished\":\"2020-07-03T05:40:00+00:00\",\"dateModified\":\"2021-01-16T02:05:24+00:00\",\"description\":\"\u4f30\u7b97\u4fc2\u6307\u4ee5\u9069\u7576\u7684\u8fd1\u4f3c\u503c\u4ee3\u66ff\u6578\u5f0f\u4e2d\u7684\u67d0\u4e9b\u6578\u503c\uff0c\u5f9e\u800c\u7c21\u5316\u8a08\u7b97\u5f97\u4e00\u500b\u8fd1\u4f3c\u7d50\u679c\u5605\u904e\u7a0b\u3002\u7c21\u55ae\u569f\u8b1b\u5373\u4fc2\u300c\u5514\u99db\u8a08\u5f97\u5481\u6e96\u300d\u3002\u4f8b9.99999 + 4.999999 \u7d04\u7b49\u65bc15\u3002\u55ba\u4f9d\u8ab2\uff0c\u6211\u6703\u6559\u5927\u5bb6\u9ede\u89e3\u8981\u53bb\u4f5c\u4f30\u7b97\u3001\u6709\u54a9\u65b9\u6cd5\u53bb\u4f5c\u4f30\u7b97\u540c\u6709\u54a9\u7b56\u7565\u3002\u4e00D\u90fd\u5514\u6df1!\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.study-together.com\\\/edu\\\/secondary\\\/form1_maths\\\/approximate-values-estimation\\\/#breadcrumb\"},\"inLanguage\":\"zh-TW\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.study-together.com\\\/edu\\\/secondary\\\/form1_maths\\\/approximate-values-estimation\\\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.study-together.com\\\/edu\\\/secondary\\\/form1_maths\\\/approximate-values-estimation\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/www.study-together.com\\\/edu\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"\u521d\u4e2d\u90e8\",\"item\":\"https:\\\/\\\/www.study-together.com\\\/edu\\\/secondary\\\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"\u4e2d\u4e00\u6578\u5b78\",\"item\":\"https:\\\/\\\/www.study-together.com\\\/edu\\\/secondary\\\/form1_maths\\\/\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"6. \u8fd1\u4f3c\u503c\u8207\u4f30\u7b97 (Approximate values &#038; estimation)\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.study-together.com\\\/edu\\\/#website\",\"url\":\"https:\\\/\\\/www.study-together.com\\\/edu\\\/\",\"name\":\"\u9f4a\u9f4a\u6eab\",\"description\":\"\u4e2d\u5b78\u53ca\u5c0f\u5b78\u8ab2\u7a0b - \u9f4a\u9f4a\u5b78!\u9f4a\u9f4a\u6eab!\",\"publisher\":{\"@id\":\"https:\\\/\\\/www.study-together.com\\\/edu\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.study-together.com\\\/edu\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"zh-TW\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/www.study-together.com\\\/edu\\\/#organization\",\"name\":\"Study2Gather\",\"url\":\"https:\\\/\\\/www.study-together.com\\\/edu\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"zh-TW\",\"@id\":\"https:\\\/\\\/www.study-together.com\\\/edu\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/www.study-together.com\\\/edu\\\/wp-content\\\/uploads\\\/2020\\\/06\\\/logo.png\",\"contentUrl\":\"https:\\\/\\\/www.study-together.com\\\/edu\\\/wp-content\\\/uploads\\\/2020\\\/06\\\/logo.png\",\"width\":250,\"height\":55,\"caption\":\"Study2Gather\"},\"image\":{\"@id\":\"https:\\\/\\\/www.study-together.com\\\/edu\\\/#\\\/schema\\\/logo\\\/image\\\/\"},\"sameAs\":[\"https:\\\/\\\/www.facebook.com\\\/-100355795002387\"]}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"6. \u8fd1\u4f3c\u503c\u8207\u4f30\u7b97 (Approximate values & estimation) &#187; \u9f4a\u9f4a\u6eab","description":"\u4f30\u7b97\u4fc2\u6307\u4ee5\u9069\u7576\u7684\u8fd1\u4f3c\u503c\u4ee3\u66ff\u6578\u5f0f\u4e2d\u7684\u67d0\u4e9b\u6578\u503c\uff0c\u5f9e\u800c\u7c21\u5316\u8a08\u7b97\u5f97\u4e00\u500b\u8fd1\u4f3c\u7d50\u679c\u5605\u904e\u7a0b\u3002\u7c21\u55ae\u569f\u8b1b\u5373\u4fc2\u300c\u5514\u99db\u8a08\u5f97\u5481\u6e96\u300d\u3002\u4f8b9.99999 + 4.999999 \u7d04\u7b49\u65bc15\u3002\u55ba\u4f9d\u8ab2\uff0c\u6211\u6703\u6559\u5927\u5bb6\u9ede\u89e3\u8981\u53bb\u4f5c\u4f30\u7b97\u3001\u6709\u54a9\u65b9\u6cd5\u53bb\u4f5c\u4f30\u7b97\u540c\u6709\u54a9\u7b56\u7565\u3002\u4e00D\u90fd\u5514\u6df1!","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.study-together.com\/edu\/secondary\/form1_maths\/approximate-values-estimation\/","og_locale":"zh_TW","og_type":"article","og_title":"6. \u8fd1\u4f3c\u503c\u8207\u4f30\u7b97 (Approximate values & estimation) &#187; \u9f4a\u9f4a\u6eab","og_description":"\u4f30\u7b97\u4fc2\u6307\u4ee5\u9069\u7576\u7684\u8fd1\u4f3c\u503c\u4ee3\u66ff\u6578\u5f0f\u4e2d\u7684\u67d0\u4e9b\u6578\u503c\uff0c\u5f9e\u800c\u7c21\u5316\u8a08\u7b97\u5f97\u4e00\u500b\u8fd1\u4f3c\u7d50\u679c\u5605\u904e\u7a0b\u3002\u7c21\u55ae\u569f\u8b1b\u5373\u4fc2\u300c\u5514\u99db\u8a08\u5f97\u5481\u6e96\u300d\u3002\u4f8b9.99999 + 4.999999 \u7d04\u7b49\u65bc15\u3002\u55ba\u4f9d\u8ab2\uff0c\u6211\u6703\u6559\u5927\u5bb6\u9ede\u89e3\u8981\u53bb\u4f5c\u4f30\u7b97\u3001\u6709\u54a9\u65b9\u6cd5\u53bb\u4f5c\u4f30\u7b97\u540c\u6709\u54a9\u7b56\u7565\u3002\u4e00D\u90fd\u5514\u6df1!","og_url":"https:\/\/www.study-together.com\/edu\/secondary\/form1_maths\/approximate-values-estimation\/","og_site_name":"\u9f4a\u9f4a\u6eab","article_publisher":"https:\/\/www.facebook.com\/-100355795002387","article_modified_time":"2021-01-16T02:05:24+00:00","og_image":[{"width":1600,"height":800,"url":"https:\/\/www.study-together.com\/edu\/wp-content\/uploads\/2020\/07\/homeSlide1_1600x800.webp","type":"image\/webp"}],"twitter_card":"summary_large_image","schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.study-together.com\/edu\/secondary\/form1_maths\/approximate-values-estimation\/","url":"https:\/\/www.study-together.com\/edu\/secondary\/form1_maths\/approximate-values-estimation\/","name":"6. \u8fd1\u4f3c\u503c\u8207\u4f30\u7b97 (Approximate values & estimation) &#187; \u9f4a\u9f4a\u6eab","isPartOf":{"@id":"https:\/\/www.study-together.com\/edu\/#website"},"datePublished":"2020-07-03T05:40:00+00:00","dateModified":"2021-01-16T02:05:24+00:00","description":"\u4f30\u7b97\u4fc2\u6307\u4ee5\u9069\u7576\u7684\u8fd1\u4f3c\u503c\u4ee3\u66ff\u6578\u5f0f\u4e2d\u7684\u67d0\u4e9b\u6578\u503c\uff0c\u5f9e\u800c\u7c21\u5316\u8a08\u7b97\u5f97\u4e00\u500b\u8fd1\u4f3c\u7d50\u679c\u5605\u904e\u7a0b\u3002\u7c21\u55ae\u569f\u8b1b\u5373\u4fc2\u300c\u5514\u99db\u8a08\u5f97\u5481\u6e96\u300d\u3002\u4f8b9.99999 + 4.999999 \u7d04\u7b49\u65bc15\u3002\u55ba\u4f9d\u8ab2\uff0c\u6211\u6703\u6559\u5927\u5bb6\u9ede\u89e3\u8981\u53bb\u4f5c\u4f30\u7b97\u3001\u6709\u54a9\u65b9\u6cd5\u53bb\u4f5c\u4f30\u7b97\u540c\u6709\u54a9\u7b56\u7565\u3002\u4e00D\u90fd\u5514\u6df1!","breadcrumb":{"@id":"https:\/\/www.study-together.com\/edu\/secondary\/form1_maths\/approximate-values-estimation\/#breadcrumb"},"inLanguage":"zh-TW","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.study-together.com\/edu\/secondary\/form1_maths\/approximate-values-estimation\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/www.study-together.com\/edu\/secondary\/form1_maths\/approximate-values-estimation\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.study-together.com\/edu\/"},{"@type":"ListItem","position":2,"name":"\u521d\u4e2d\u90e8","item":"https:\/\/www.study-together.com\/edu\/secondary\/"},{"@type":"ListItem","position":3,"name":"\u4e2d\u4e00\u6578\u5b78","item":"https:\/\/www.study-together.com\/edu\/secondary\/form1_maths\/"},{"@type":"ListItem","position":4,"name":"6. \u8fd1\u4f3c\u503c\u8207\u4f30\u7b97 (Approximate values &#038; estimation)"}]},{"@type":"WebSite","@id":"https:\/\/www.study-together.com\/edu\/#website","url":"https:\/\/www.study-together.com\/edu\/","name":"\u9f4a\u9f4a\u6eab","description":"\u4e2d\u5b78\u53ca\u5c0f\u5b78\u8ab2\u7a0b - \u9f4a\u9f4a\u5b78!\u9f4a\u9f4a\u6eab!","publisher":{"@id":"https:\/\/www.study-together.com\/edu\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.study-together.com\/edu\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"zh-TW"},{"@type":"Organization","@id":"https:\/\/www.study-together.com\/edu\/#organization","name":"Study2Gather","url":"https:\/\/www.study-together.com\/edu\/","logo":{"@type":"ImageObject","inLanguage":"zh-TW","@id":"https:\/\/www.study-together.com\/edu\/#\/schema\/logo\/image\/","url":"https:\/\/www.study-together.com\/edu\/wp-content\/uploads\/2020\/06\/logo.png","contentUrl":"https:\/\/www.study-together.com\/edu\/wp-content\/uploads\/2020\/06\/logo.png","width":250,"height":55,"caption":"Study2Gather"},"image":{"@id":"https:\/\/www.study-together.com\/edu\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/-100355795002387"]}]}},"_links":{"self":[{"href":"https:\/\/www.study-together.com\/edu\/wp-json\/wp\/v2\/pages\/1046","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.study-together.com\/edu\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.study-together.com\/edu\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.study-together.com\/edu\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.study-together.com\/edu\/wp-json\/wp\/v2\/comments?post=1046"}],"version-history":[{"count":0,"href":"https:\/\/www.study-together.com\/edu\/wp-json\/wp\/v2\/pages\/1046\/revisions"}],"up":[{"embeddable":true,"href":"https:\/\/www.study-together.com\/edu\/wp-json\/wp\/v2\/pages\/923"}],"wp:attachment":[{"href":"https:\/\/www.study-together.com\/edu\/wp-json\/wp\/v2\/media?parent=1046"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}