{"id":665,"date":"2026-01-23T18:46:41","date_gmt":"2026-01-23T18:46:41","guid":{"rendered":"https:\/\/bliv-klogere.dk\/?page_id=665"},"modified":"2026-02-05T15:59:33","modified_gmt":"2026-02-05T15:59:33","slug":"4-enheder-og-omsaetning-mellem-hverdagens-enheder","status":"publish","type":"page","link":"https:\/\/bliv-klogere.dk\/index.php\/4-enheder-og-omsaetning-mellem-hverdagens-enheder\/","title":{"rendered":"4. Enheder og oms\u00e6tning mellem hverdagens enheder"},"content":{"rendered":"\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Indholdsfortegnelse<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/bliv-klogere.dk\/index.php\/4-enheder-og-omsaetning-mellem-hverdagens-enheder\/#1_Matematiske_enheder\" >1. Matematiske enheder<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/bliv-klogere.dk\/index.php\/4-enheder-og-omsaetning-mellem-hverdagens-enheder\/#Opgaver\" >Opgaver<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/bliv-klogere.dk\/index.php\/4-enheder-og-omsaetning-mellem-hverdagens-enheder\/#41_Sammensat_laengde\" >4.1 Sammensat l\u00e6ngde&nbsp;<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/bliv-klogere.dk\/index.php\/4-enheder-og-omsaetning-mellem-hverdagens-enheder\/#42_Masse_og_pris\" >4.2 Masse og pris&nbsp;<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/bliv-klogere.dk\/index.php\/4-enheder-og-omsaetning-mellem-hverdagens-enheder\/#43_Rumfang_og_masse\" >4.3 Rumfang og masse&nbsp;<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/bliv-klogere.dk\/index.php\/4-enheder-og-omsaetning-mellem-hverdagens-enheder\/#44_Kombination_af_enheder\" >4.4 Kombination af enheder&nbsp;<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/bliv-klogere.dk\/index.php\/4-enheder-og-omsaetning-mellem-hverdagens-enheder\/#45_Omregn_folgende_afstande_til_mil\" >4.5 Omregn f\u00f8lgende afstande til mil&nbsp;<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/bliv-klogere.dk\/index.php\/4-enheder-og-omsaetning-mellem-hverdagens-enheder\/#46_Imperiale_enheder_brugt_i_det_engelske_imperium\" >4.6 Imperiale enheder\u00a0(brugt i det engelske imperium)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/bliv-klogere.dk\/index.php\/4-enheder-og-omsaetning-mellem-hverdagens-enheder\/#47_Temperatur\" >4.7 Temperatur&nbsp;<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/bliv-klogere.dk\/index.php\/4-enheder-og-omsaetning-mellem-hverdagens-enheder\/#48_Opskrift_og_forhold\" >4.8 Opskrift og forhold&nbsp;<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/bliv-klogere.dk\/index.php\/4-enheder-og-omsaetning-mellem-hverdagens-enheder\/#49_Sammenligning_og_raesonnement\" >4.9 Sammenligning og r\u00e6sonnement&nbsp;<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/bliv-klogere.dk\/index.php\/4-enheder-og-omsaetning-mellem-hverdagens-enheder\/#410_Sammenlagt_omregning\" >4.10 Sammenlagt omregning&nbsp;<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/bliv-klogere.dk\/index.php\/4-enheder-og-omsaetning-mellem-hverdagens-enheder\/#411_Udfordringsopgave\" >4.11 Udfordringsopgave&nbsp;&nbsp;<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"1_Matematiske_enheder\"><\/span>1. Matematiske enheder<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>1. Indledning<\/strong>&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">I hverdagen bruger vi hele tiden matematiske enheder, ofte uden at t\u00e6nke over det. N\u00e5r vi m\u00e5ler l\u00e6ngde, vejer madvarer, k\u00f8ber benzin eller ser temperaturen udenfor, anvender vi forskellige m\u00e5leenheder. For at kunne forst\u00e5 og sammenligne disse st\u00f8rrelser er det vigtigt at kende til <strong>enhedssystemer<\/strong> og kunne <strong>omregne mellem enheder<\/strong>.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>2. Hvad er en matematisk enhed?<\/strong>&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">En matematisk enhed er en fastlagt st\u00f8rrelse, som bruges til at m\u00e5le noget bestemt, fx:&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>L\u00e6ngde<\/strong> (meter, centimeter, tommer)&nbsp;<\/li>\n\n\n\n<li><strong>Masse<\/strong> (gram, kilogram, pund)&nbsp;<\/li>\n\n\n\n<li><strong>Rumfang<\/strong> (liter, deciliter, milliliter)&nbsp;<\/li>\n\n\n\n<li><strong>Tid<\/strong> (sekunder, minutter, timer)&nbsp;<\/li>\n\n\n\n<li><strong>Temperatur<\/strong> (grader Celsius, Fahrenheit)&nbsp;<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Enheder g\u00f8r det muligt at kommunikere pr\u00e6cist og sammenligne m\u00e5linger.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>3. Enhedssystemer<\/strong>&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Der findes forskellige enhedssystemer:&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Det metriske system (SI-systemet)<\/strong>&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Dette system bruges i Danmark og det meste af verden. Det er opbygget i <strong>tier<\/strong> og derfor let at regne med.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Eksempler:&nbsp;<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>1 meter = 100 centimeter&nbsp;<\/li>\n\n\n\n<li>1 kilogram = 1000 gram&nbsp;<\/li>\n\n\n\n<li>1 liter = 10 deciliter = 1000 milliliter&nbsp;<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Det imperiale system<\/strong>&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Dette system bruges bl.a. i USA og Storbritannien.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Eksempler:&nbsp;<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Tommer (inch)&nbsp;<\/li>\n\n\n\n<li>Fod (feet)&nbsp;<\/li>\n\n\n\n<li>Pund (pounds). Der er i \u00f8vrigt forskel p\u00e5 et pund i USA og England (454 gram) og Danmark (500 gram)&nbsp;<\/li>\n\n\n\n<li>Gallon&nbsp;<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>4. Omregning mellem enheder<\/strong>&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Omregning betyder, at man skifter fra \u00e9n enhed til en anden, men bevarer den samme st\u00f8rrelse.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Eksempel: Centimeter til tommer<\/strong>&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>1 tomme = <strong>2,54 cm<\/strong>&nbsp;<\/li>\n\n\n\n<li>For at omregne fra cm til tommer dividerer man med 2,54&nbsp;<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Eksempel:&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>10 cm \u00f7 2,54 \u2248 3,94 tommer&nbsp;<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Omvendt:&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Tommer til cm: gang med 2,54&nbsp;<\/li>\n\n\n\n<li>5 tommer \u00d7 2,54 = 12,7 cm&nbsp;<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>5. Omregning i hverdagen<\/strong>&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Vi m\u00f8der ofte omregning i dagligdagen:&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Madlavning<\/strong>&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>1 liter = 10 deciliter&nbsp;<\/li>\n\n\n\n<li>\u00bd liter = 5 deciliter&nbsp;<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Indk\u00f8b<\/strong>&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>1000 g = 1 kg&nbsp;<\/li>\n\n\n\n<li>750 g = 0,75 kg&nbsp;<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Tid<\/strong>&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>1 time = 60 minutter&nbsp;<\/li>\n\n\n\n<li>1 minut = 60 sekunder&nbsp;<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Temperatur<\/strong>&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>I Danmark bruger vi Celsius&nbsp;<\/li>\n\n\n\n<li>I USA bruges Fahrenheit&nbsp;<br>Formel:&nbsp;<br>F=95\u22c5C+32F = \\frac{9}{5} \\cdot C + 32F=59\u200b\u22c5C+32&nbsp;&nbsp;<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>6. Hvorfor er enhedsomregning vigtig?<\/strong>&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>For at undg\u00e5 fejl (fx i opskrifter eller byggeri)&nbsp;<\/li>\n\n\n\n<li>For at kunne sammenligne priser og m\u00e6ngder&nbsp;<\/li>\n\n\n\n<li>For at forst\u00e5 internationale m\u00e5l og standarder&nbsp;<\/li>\n\n\n\n<li>For at styrke matematisk forst\u00e5else og probleml\u00f8sning&nbsp;<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>7. Afslutning<\/strong>&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Matematiske enheder er en vigtig del af hverdagen, og evnen til at omregne mellem dem er en grundl\u00e6ggende matematisk f\u00e6rdighed. Ved at forst\u00e5 b\u00e5de det metriske og det imperiale system bliver vi bedre rustet til at navigere i en global verden, hvor forskellige m\u00e5leenheder bruges.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Link til <a href=\"https:\/\/bliv-klogere.dk\/index.php\/4-enheder-og-omsaetning-mellem-hverdagens-enheder\/\">toppen af siden<\/a>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Opgaver\"><\/span>Opgaver<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"41_Sammensat_laengde\"><\/span>4.1 Sammensat l\u00e6ngde&nbsp;<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">En l\u00f8ber l\u00f8ber 3,75 km om morgenen og 1250 m om aftenen. N\u00e6ste dag l\u00f8ber vedkommende 4,7 km og 1234 m om aftenen&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Omregn alle afstande til meter&nbsp;<\/li>\n\n\n\n<li>Hvor langt l\u00f8ber personen i alt i kilometer?&nbsp;<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Senere l\u00f8ber vedkommende en tur p\u00e5 2 danske mil. Hvor langt har vedkommende i alt l\u00f8bet?&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Link til <a href=\"https:\/\/bliv-klogere.dk\/index.php\/4-enheder-og-omsaetning-mellem-hverdagens-enheder\/\">toppen af siden<\/a>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"42_Masse_og_pris\"><\/span>4.2 Masse og pris&nbsp;<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Oksek\u00f8d koster 89,95 kr. pr. kg.&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Hvad koster 350 g?&nbsp;<\/li>\n\n\n\n<li>Hvor meget k\u00f8d f\u00e5r man for 112,44 kr.?&nbsp;<\/li>\n\n\n\n<li>Hvad koster 550 g?&nbsp;<\/li>\n\n\n\n<li>\u2026 og hvad koster 2.450 g?&nbsp;<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Link til <a href=\"https:\/\/bliv-klogere.dk\/index.php\/4-enheder-og-omsaetning-mellem-hverdagens-enheder\/\">toppen af siden<\/a>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"43_Rumfang_og_masse\"><\/span>4.3 Rumfang og masse&nbsp;<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">1 liter vand vejer ca. 1 kg.&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Hvad vejer 2,75 liter vand i gram?&nbsp;<\/li>\n\n\n\n<li>Hvor mange liter vand svarer til 1650 g?&nbsp;<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">I Rusland er man (som alle ved) ret glade for at drikke vodka. Men n\u00e5r man bestiller vodka p\u00e5 en bar, s\u00e5 beder man om gram, ikke centiliter.&nbsp;&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Du vil nu bestille en sjus p\u00e5 3 cl vodka. Hvor mange gram vodka skal du bestille?<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Link til <a href=\"https:\/\/bliv-klogere.dk\/index.php\/4-enheder-og-omsaetning-mellem-hverdagens-enheder\/\">toppen af siden<\/a>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"44_Kombination_af_enheder\"><\/span>4.4 Kombination af enheder&nbsp;<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">En bil k\u00f8rer 150 km p\u00e5 2 timer og 30 minutter.&nbsp;<br>&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Omregn tiden til minutter&nbsp;<\/li>\n\n\n\n<li>Beregn bilens gennemsnitshastighed i km\/t&nbsp;<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"45_Omregn_folgende_afstande_til_mil\"><\/span>4.5 Omregn f\u00f8lgende afstande til mil&nbsp;<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Bem\u00e6rk: Distancerne er jo danske, s\u00e5 brug danske mil. Ikke hverken svenske eller norske, selvom de er nemmere at regne med :-).&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Distance<\/strong>&nbsp;<\/td><td><strong>Afstand i km<\/strong>&nbsp;<\/td><td><strong>&nbsp;Afstand i mil<\/strong>&nbsp;<br><strong>(f.eks. 1,33 mil)&nbsp;<\/strong>&nbsp;<\/td><td><strong>Afstand i mil og fod <\/strong>&nbsp;<br><strong>(f.eks. 1 mil og 156 fod)<\/strong>&nbsp;<\/td><\/tr><tr><td>Hedensted &#8211; Vejle&nbsp;<\/td><td>12,6&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><\/tr><tr><td>Hedensted &#8211; Horsens&nbsp;<\/td><td>19&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><\/tr><tr><td>Hedensted &#8211; Aarhus&nbsp;<\/td><td>63&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><\/tr><tr><td>Hedensted &#8211; K\u00f8benhavn&nbsp;<\/td><td>248&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><\/tr><tr><td>Hedensted &#8211; Paris&nbsp;<\/td><td>1.175&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><\/tr><tr><td>Hedensted &#8211; Singapore&nbsp;<\/td><td>10.148&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Link til <a href=\"https:\/\/bliv-klogere.dk\/index.php\/4-enheder-og-omsaetning-mellem-hverdagens-enheder\/\">toppen af siden<\/a>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"46_Imperiale_enheder_brugt_i_det_engelske_imperium\"><\/span>4.6 Imperiale enheder\u00a0(brugt i det engelske imperium)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">1 tomme = 2,54 cm&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1 fod = 12 tommer&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Et bord er 5 fod og 6 tommer langt.&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Omregn l\u00e6ngden til tommer&nbsp;<\/li>\n\n\n\n<li>Omregn l\u00e6ngden til centimeter&nbsp;<\/li>\n\n\n\n<li>Omregn l\u00e6ngden til meter\u00a0<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Link til <a href=\"https:\/\/bliv-klogere.dk\/index.php\/4-enheder-og-omsaetning-mellem-hverdagens-enheder\/\">toppen af siden<\/a>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"47_Temperatur\"><\/span>4.7 Temperatur&nbsp;<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>Omregning fra Celsius til Fahrenheit&nbsp;<\/td><td>Omregning fra Fahrenheit til Celsius&nbsp;<\/td><\/tr><tr><td><img decoding=\"async\" src=\"blob:https:\/\/bliv-klogere.dk\/f3f93822-3b3a-497d-bbad-ae65bae819bc\">&nbsp;<\/td><td><img decoding=\"async\" src=\"blob:https:\/\/bliv-klogere.dk\/6249444a-93a6-415e-ad42-8364098327b1\">&nbsp;<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Din kammerat har lige ringet fra Las Vegas. Her var temperaturen 100\u00b0F. Du svarer ham, at temperaturen i Danmark er 15\u00b0C. Omregn begge temperaturer&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Udfyld skemaet med omregnede temperaturer&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Grader celsius<\/strong>&nbsp;<\/td><td><strong>Grader fahrenheit<\/strong>&nbsp;<\/td><\/tr><tr><td>0&nbsp;<\/td><td>&nbsp;<\/td><\/tr><tr><td>&nbsp;<\/td><td>0&nbsp;<\/td><\/tr><tr><td>50&nbsp;<\/td><td>&nbsp;<\/td><\/tr><tr><td>&nbsp;<\/td><td>10&nbsp;<\/td><\/tr><tr><td>&nbsp;<\/td><td>50&nbsp;<\/td><\/tr><tr><td>-10&nbsp;<\/td><td>&nbsp;<\/td><\/tr><tr><td>&nbsp;<\/td><td>-30&nbsp;<\/td><\/tr><tr><td>20&nbsp;<\/td><td>&nbsp;<\/td><\/tr><tr><td>&nbsp;<\/td><td>20&nbsp;<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Link til <a href=\"https:\/\/bliv-klogere.dk\/index.php\/4-enheder-og-omsaetning-mellem-hverdagens-enheder\/\">toppen af siden<\/a>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"48_Opskrift_og_forhold\"><\/span>4.8 Opskrift og forhold&nbsp;<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">En opskrift er til 6 personer og bruger 0,9 liter suppe.&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Hvor meget suppe bruges pr. person?&nbsp;<\/li>\n\n\n\n<li>Hvor mange deciliter suppe skal bruges til 14 personer?&nbsp;<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"49_Sammenligning_og_raesonnement\"><\/span>4.9 Sammenligning og r\u00e6sonnement&nbsp;<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Hvilken er st\u00f8rst?&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>3,2 m\u00b2 eller 32 000 cm\u00b2&nbsp;<\/li>\n\n\n\n<li>1,8 liter eller 1 750 ml&nbsp;<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Vis alle mellemregninger.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Link til <a href=\"https:\/\/bliv-klogere.dk\/index.php\/4-enheder-og-omsaetning-mellem-hverdagens-enheder\/\">toppen af siden<\/a>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"410_Sammenlagt_omregning\"><\/span>4.10 Sammenlagt omregning&nbsp;<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">En pakke pasta vejer 500 g.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">En familie bruger \u2154 af pakken.&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>a) Hvor mange gram pasta bruges?&nbsp;<\/li>\n\n\n\n<li>b) Hvor mange kilogram er det?&nbsp;<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"411_Udfordringsopgave\"><\/span>4.11 Udfordringsopgave&nbsp;&nbsp;<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">En tank kan rumme 45 liter benzin.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Bilen bruger 1 liter pr. 14 km.&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Hvor langt kan bilen k\u00f8re p\u00e5 en fuld tank?&nbsp;<\/li>\n\n\n\n<li>Hvor mange kilometer kan bilen k\u00f8re p\u00e5 18 liter?&nbsp;<\/li>\n\n\n\n<li>Hvor mange liter benzin bruges p\u00e5 en tur p\u00e5 210 km?&nbsp;<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Ekstra<\/strong>.&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Hvor mange mil k\u00f8rer bilen p\u00e5 literen&nbsp;<\/li>\n\n\n\n<li>Hvor mange liter benzin skal bilen bruge for at komme til hhv. K\u00f8benhavn, Paris og Singapore. Se afstandene i opgave 5&nbsp;<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Link til <a href=\"https:\/\/bliv-klogere.dk\/index.php\/4-enheder-og-omsaetning-mellem-hverdagens-enheder\/\">toppen af siden<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>1. Matematiske enheder 1. Indledning&nbsp; I hverdagen bruger vi hele tiden matematiske enheder, ofte uden at t\u00e6nke over det. N\u00e5r vi m\u00e5ler l\u00e6ngde, vejer madvarer, k\u00f8ber benzin eller ser temperaturen udenfor, anvender vi forskellige m\u00e5leenheder. For at kunne forst\u00e5 og sammenligne disse st\u00f8rrelser er det vigtigt at kende til enhedssystemer og kunne omregne mellem enheder.&nbsp; &hellip; <a href=\"https:\/\/bliv-klogere.dk\/index.php\/4-enheder-og-omsaetning-mellem-hverdagens-enheder\/\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">4. Enheder og oms\u00e6tning mellem hverdagens enheder<\/span> <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-665","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/bliv-klogere.dk\/index.php\/wp-json\/wp\/v2\/pages\/665","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/bliv-klogere.dk\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/bliv-klogere.dk\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/bliv-klogere.dk\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/bliv-klogere.dk\/index.php\/wp-json\/wp\/v2\/comments?post=665"}],"version-history":[{"count":4,"href":"https:\/\/bliv-klogere.dk\/index.php\/wp-json\/wp\/v2\/pages\/665\/revisions"}],"predecessor-version":[{"id":1364,"href":"https:\/\/bliv-klogere.dk\/index.php\/wp-json\/wp\/v2\/pages\/665\/revisions\/1364"}],"wp:attachment":[{"href":"https:\/\/bliv-klogere.dk\/index.php\/wp-json\/wp\/v2\/media?parent=665"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}