{"id":15177,"date":"2025-07-01T09:15:03","date_gmt":"2025-07-01T02:15:03","guid":{"rendered":"https:\/\/www.ckconitsha.com\/vn\/?p=15177"},"modified":"2025-07-01T09:35:11","modified_gmt":"2025-07-01T02:35:11","slug":"don-vi-do-do-dai-la-gi-tim-hieu-cach-do-va-bang-don-vi-do-do-dai","status":"publish","type":"post","link":"https:\/\/www.ckconitsha.com\/vn\/don-vi-do-do-dai-la-gi-tim-hieu-cach-do-va-bang-don-vi-do-do-dai\/","title":{"rendered":"\u0110\u01a1n v\u1ecb \u0111o \u0111\u1ed9 d\u00e0i l\u00e0 g\u00ec? T\u00ecm hi\u1ec3u c\u00e1ch \u0111o v\u00e0 b\u1ea3ng \u0111\u01a1n v\u1ecb \u0111o \u0111\u1ed9 d\u00e0i"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_79_2 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\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><\/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:\/\/www.ckconitsha.com\/vn\/don-vi-do-do-dai-la-gi-tim-hieu-cach-do-va-bang-don-vi-do-do-dai\/#Don_vi_do_luong_la_gi\" >\u0110\u01a1n v\u1ecb \u0111o l\u01b0\u1eddng l\u00e0 g\u00ec?<\/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:\/\/www.ckconitsha.com\/vn\/don-vi-do-do-dai-la-gi-tim-hieu-cach-do-va-bang-don-vi-do-do-dai\/#Chieu_dai_la_bao_nhieu\" >Chi\u1ec1u d\u00e0i l\u00e0 bao nhi\u00eau?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.ckconitsha.com\/vn\/don-vi-do-do-dai-la-gi-tim-hieu-cach-do-va-bang-don-vi-do-do-dai\/#Don_vi_do_luong_la_gi-2\" >\u0110\u01a1n v\u1ecb \u0111o l\u01b0\u1eddng l\u00e0 g\u00ec?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.ckconitsha.com\/vn\/don-vi-do-do-dai-la-gi-tim-hieu-cach-do-va-bang-don-vi-do-do-dai\/#Tim_hieu_mot_so_cong_cu_va_cach_do_do_dai\" >T\u00ecm hi\u1ec3u m\u1ed9t s\u1ed1 c\u00f4ng c\u1ee5 v\u00e0 c\u00e1ch \u0111o \u0111\u1ed9 d\u00e0i<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.ckconitsha.com\/vn\/don-vi-do-do-dai-la-gi-tim-hieu-cach-do-va-bang-don-vi-do-do-dai\/#Do_dai_cua_cac_cong_cu_do_do_luong_la_bao_nhieu\" >\u0110\u1ed9 d\u00e0i c\u1ee7a c\u00e1c c\u00f4ng c\u1ee5 \u0111o \u0111o l\u01b0\u1eddng l\u00e0 bao nhi\u00eau<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.ckconitsha.com\/vn\/don-vi-do-do-dai-la-gi-tim-hieu-cach-do-va-bang-don-vi-do-do-dai\/#Xac_dinh_nguoi_cai_tri_cua_GHD_va_DCN\" >X\u00e1c \u0111\u1ecbnh ng\u01b0\u1eddi cai tr\u1ecb c\u1ee7a GHD v\u00e0 DCN<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.ckconitsha.com\/vn\/don-vi-do-do-dai-la-gi-tim-hieu-cach-do-va-bang-don-vi-do-do-dai\/#Cach_do_do_dai\" >C\u00e1ch \u0111o \u0111\u1ed9 d\u00e0i<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.ckconitsha.com\/vn\/don-vi-do-do-dai-la-gi-tim-hieu-cach-do-va-bang-don-vi-do-do-dai\/#Bang_do_don_vi_chieu_dai_va_cach_thay_doi_don_vi_do_chieu_dai\" >B\u1ea3ng \u0111o \u0111\u01a1n v\u1ecb chi\u1ec1u d\u00e0i v\u00e0 c\u00e1ch thay \u0111\u1ed5i \u0111\u01a1n v\u1ecb \u0111o chi\u1ec1u d\u00e0i<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.ckconitsha.com\/vn\/don-vi-do-do-dai-la-gi-tim-hieu-cach-do-va-bang-don-vi-do-do-dai\/#Bang_do_luong_va_doc_don_vi\" >B\u1ea3ng \u0111o l\u01b0\u1eddng v\u00e0 \u0111\u1ecdc \u0111\u01a1n v\u1ecb<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.ckconitsha.com\/vn\/don-vi-do-do-dai-la-gi-tim-hieu-cach-do-va-bang-don-vi-do-do-dai\/#Cach_thay_doi_do_dai_cua_don_vi_do_luong\" >C\u00e1ch thay \u0111\u1ed5i \u0111\u1ed9 d\u00e0i c\u1ee7a \u0111\u01a1n v\u1ecb \u0111o l\u01b0\u1eddng<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.ckconitsha.com\/vn\/don-vi-do-do-dai-la-gi-tim-hieu-cach-do-va-bang-don-vi-do-do-dai\/#Bang_cac_don_vi_chuyen_doi_cua_phep_do_chieu_dai\" >B\u1ea3ng c\u00e1c \u0111\u01a1n v\u1ecb chuy\u1ec3n \u0111\u1ed5i c\u1ee7a ph\u00e9p \u0111o chi\u1ec1u d\u00e0i<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.ckconitsha.com\/vn\/don-vi-do-do-dai-la-gi-tim-hieu-cach-do-va-bang-don-vi-do-do-dai\/#Cach_thay_doi_do_dai_cua_don_vi_do_luong-2\" >C\u00e1ch thay \u0111\u1ed5i \u0111\u1ed9 d\u00e0i c\u1ee7a \u0111\u01a1n v\u1ecb \u0111o l\u01b0\u1eddng<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/www.ckconitsha.com\/vn\/don-vi-do-do-dai-la-gi-tim-hieu-cach-do-va-bang-don-vi-do-do-dai\/#Cac_bai_tap_thuc_hanh_de_thay_doi_mot_so_don_vi_do_chieu_dai\" >C\u00e1c b\u00e0i t\u1eadp th\u1ef1c h\u00e0nh \u0111\u1ec3 thay \u0111\u1ed5i m\u1ed9t s\u1ed1 \u0111\u01a1n v\u1ecb \u0111o chi\u1ec1u d\u00e0i<\/a><\/li><\/ul><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/www.ckconitsha.com\/vn\/don-vi-do-do-dai-la-gi-tim-hieu-cach-do-va-bang-don-vi-do-do-dai\/#Tim_hieu_cac_don_vi_do_chieu_dai_quoc_te\" >T\u00ecm hi\u1ec3u c\u00e1c \u0111\u01a1n v\u1ecb \u0111o chi\u1ec1u d\u00e0i qu\u1ed1c t\u1ebf<\/a><\/li><\/ul><\/nav><\/div>\n<\/p>\n<p>N\u1ebfu b\u1ea1n ch\u1ec9 s\u1eed d\u1ee5ng m\u1eaft th\u01b0\u1eddng, b\u1ea1n c\u00f3 th\u1ec3 c\u1ea3m nh\u1eadn \u0111\u01b0\u1ee3c k\u00edch th\u01b0\u1edbc c\u1ee7a b\u1ea5t k\u1ef3 \u0111\u1ed1i t\u01b0\u1ee3ng n\u00e0o kh\u00f4ng? Trong b\u00e0i h\u1ecdc ng\u00e0y h\u00f4m nay, Shining Home &#8211; Gia \u0111\u00ecnh Anh Ng\u1eef s\u1ebd chia s\u1ebb v\u1edbi c\u00e1c sinh vi\u00ean \u0111\u01a1n v\u1ecb \u0111o \u0111\u1ed9 d\u00e0i? Cho bi\u1ebft c\u00e1ch \u0111o \u0111\u1ed9 d\u00e0i ch\u00ednh x\u00e1c v\u00e0 c\u00e1c c\u00f4ng c\u1ee5 th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111o chi\u1ec1u d\u00e0i c\u1ee7a m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng. Do \u0111\u00f3 b\u1ea1n s\u1ebd hi\u1ec3u \u0111\u1ec3 \u00e1p d\u1ee5ng trong cu\u1ed9c s\u1ed1ng th\u1ef1c.<\/p>\n<p>                                                                    <img decoding=\"async\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img_default\/monkey3.png\" alt=\"\"><\/p>\n<p class=\"title\">H\u00e0ng tri\u1ec7u tr\u1ebb em \u0111\u00e3 ph\u00e1t tri\u1ec3n c\u00e1c k\u1ef9 n\u0103ng ng\u00f4n ng\u1eef c\u1ee7a ch\u00fang th\u00f4ng qua c\u00e1c \u1ee9ng d\u1ee5ng h\u1ecdc t\u1eadp c\u1ee7a kh\u1ec9<\/p>\n<p class=\"description\">\u0110\u0103ng k\u00fd ngay \u0111\u1ec3 \u0111\u01b0\u1ee3c t\u01b0 v\u1ea5n mi\u1ec5n ph\u00ed v\u1ec1 c\u00e1c s\u1ea3n ph\u1ea9m v\u00e0 tuy\u1ebfn h\u1ecdc h\u1ecdc cho tr\u1ebb em.<\/p>\n<p>                                                                            *Vui l\u00f2ng ki\u1ec3m tra t\u00ean \u0111\u1ea7y \u0111\u1ee7 c\u1ee7a b\u1ea1n *Vui l\u00f2ng ki\u1ec3m tra s\u1ed1 \u0111i\u1ec7n tho\u1ea1i h\u01a1n 2.000 t\u1eeb &amp; 6.000 c\u00e2u ti\u1ebfng Anh \u0111\u1ec3 ph\u00e1t tri\u1ec3n to\u00e0n di\u1ec7n 4 k\u1ef9 n\u0103ng ti\u1ebfng Anh t\u1ed1t &#8211; ti\u1ebfng Anh theo c\u00e1c ph\u01b0\u01a1ng ph\u00e1p hi\u1ec7n \u0111\u1ea1i ph\u00e1t tri\u1ec3n kh\u1ea3 n\u0103ng EQ &amp; Vi\u1ec7t Nam *B\u1ea1n ch\u01b0a ch\u1ecdn b\u1ea5t k\u1ef3 m\u1ee5c n\u00e0o! \u0110\u0103ng k\u00fd t\u01b0 v\u1ea5n mi\u1ec5n ph\u00ed<\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Don_vi_do_luong_la_gi\"><\/span>\u0110\u01a1n v\u1ecb \u0111o l\u01b0\u1eddng l\u00e0 g\u00ec?      <span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">Ch\u00fang ta h\u00e3y t\u00ecm ra m\u1ed9t s\u1ed1 kh\u00e1i ni\u1ec7m c\u01a1 b\u1ea3n sau \u0111\u00e2y, \u0111\u1ec3 ch\u00fang ta c\u00f3 th\u1ec3 hi\u1ec3u \u00fd ngh\u0129a c\u1ee7a \u0111\u01a1n v\u1ecb \u0111o l\u01b0\u1eddng d\u00e0i h\u1ea1n <\/p>\n<p dir=\"ltr\"><img decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/don-vi-do-do-dai-la-gi-1.jpg\" alt=\"\u0110\u1ecbnh ngh\u0129a v\u1ec1 chi\u1ec1u d\u00e0i \u0111\u01a1n v\u1ecb \u0111o l\u01b0\u1eddng. (\u1ea2nh: Canva.com)\" width=\"100%\"><\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Chieu_dai_la_bao_nhieu\"><\/span>Chi\u1ec1u d\u00e0i l\u00e0 bao nhi\u00eau? <span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">\u0110\u1ed9 d\u00e0i (ho\u1eb7c chi\u1ec1u d\u00e0i) l\u00e0 kho\u1ea3ng c\u00e1ch gi\u1eefa hai \u0111i\u1ec3m, t\u1eeb \u0111i\u1ec3m n\u00e0y \u0111\u1ebfn \u0111i\u1ec3m kh\u00e1c v\u00e0 <\/p>\n<p dir=\"ltr\">\u0110\u1ec3 bi\u1ebft \u0111\u1ed9 d\u00e0i c\u1ee7a b\u1ea5t k\u1ef3 \u0111\u1ed1i t\u01b0\u1ee3ng, ch\u00fang ta c\u1ea7n \u0111o \u0111\u1ed9 d\u00e0i. V\u00ec v\u1eady, ph\u00e9p \u0111o chi\u1ec1u d\u00e0i \u0111\u01b0\u1ee3c so s\u00e1nh v\u1edbi chi\u1ec1u d\u00e0i \u0111\u00f3 v\u1edbi chi\u1ec1u d\u00e0i kh\u00e1c \u0111\u01b0\u1ee3c ch\u1ecdn l\u00e0m \u0111\u01a1n v\u1ecb <\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Don_vi_do_luong_la_gi-2\"><\/span>\u0110\u01a1n v\u1ecb \u0111o l\u01b0\u1eddng l\u00e0 g\u00ec? <span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">\u0110\u01a1n v\u1ecb \u0111o ho\u1eb7c \u0111\u01a1n v\u1ecb \u0111o l\u01b0\u1eddng l\u00e0 m\u1ed9t \u0111\u1ea1i l\u01b0\u1ee3ng v\u1eadt l\u00fd \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh l\u00e0 m\u1ed9t \u0111\u01a1n v\u1ecb ti\u00eau chu\u1ea9n v\u00e0 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ed3ng \u0111\u1ec1u tr\u00ean to\u00e0n qu\u1ed1c theo lu\u1eadt hi\u1ec7n h\u00e0nh \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh tr\u1ecdng l\u01b0\u1ee3ng, tr\u1ecdng l\u01b0\u1ee3ng, k\u00edch th\u01b0\u1edbc ho\u1eb7c tr\u1ea1ng th\u00e1i &#8230; c\u1ee7a m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng ho\u1eb7c hi\u1ec7n t\u01b0\u1ee3ng.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">\u0110\u01a1n v\u1ecb \u0111o \u0111\u1ed9 d\u00e0i: \u0110\u01a1n v\u1ecb \u0111o l\u00e0 chi\u1ec1u d\u00e0i \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111o kho\u1ea3ng c\u00e1ch gi\u1eefa hai \u0111i\u1ec3m, \u0111\u1ec3 so s\u00e1nh \u0111\u1ed9 l\u1edbn cho t\u1ea5t c\u1ea3 c\u00e1c \u0111\u1ed9 d\u00e0i kh\u00e1c.<\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\">V\u00ed d\u1ee5: b\u1ea3ng d\u00e0i 1 m l\u00e0 1 l\u00e0 chi\u1ec1u d\u00e0i, m l\u00e0 \u0111\u01a1n v\u1ecb \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111o <\/p>\n<p dir=\"ltr\">L\u01b0u \u00fd: \u0110\u01a1n v\u1ecb \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111o \u0111\u1ed9 d\u00e0i trong h\u1ec7 th\u1ed1ng c\u00e1c \u0111\u01a1n v\u1ecb \u0111o l\u01b0\u1eddng ph\u00e1p l\u00fd c\u1ee7a n\u01b0\u1edbc ta l\u00e0 m\u00e9t (k\u00fd hi\u1ec7u: m) <\/p>\n<p dir=\"ltr\">Ngo\u00e0i ra, ch\u00fang t\u00f4i c\u0169ng s\u1eed d\u1ee5ng c\u00e1c \u0111\u01a1n v\u1ecb kh\u00e1c nh\u01b0: milimethia (mm), xentimetht (cm), ch\u1ee7 \u0111\u1ec1 (DM), km (km) &#8230;<\/p>\n<p dir=\"ltr\">\u0110o l\u01b0\u1eddng l\u00e0 m\u1ed9t trong nh\u1eefng v\u1ea5n \u0111\u1ec1 to\u00e1n h\u1ecdc quan tr\u1ecdng m\u00e0 h\u1ecdc sinh s\u1ebd l\u00e0m quen \u1edf c\u1ea5p ti\u1ec3u h\u1ecdc. Shining Home &#8211; Gia \u0111\u00ecnh Anh Ng\u1eef Math v\u1edbi h\u01a1n 60 ch\u1ee7 \u0111\u1ec1 thu\u1ed9c 7 ch\u1ee7 \u0111\u1ec1 to\u00e1n h\u1ecdc l\u1edbn, bao g\u1ed3m \u0111o l\u01b0\u1eddng v\u1edbi ch\u01b0\u01a1ng tr\u00ecnh gi\u1ea3ng d\u1ea1y \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf theo ph\u01b0\u01a1ng ph\u00e1p m\u1edbi c\u1ee7a B\u1ed9 Gi\u00e1o d\u1ee5c v\u00e0 \u0110\u00e0o t\u1ea1o ch\u1eafc ch\u1eafn l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 h\u1ed7 tr\u1ee3 tuy\u1ec7t v\u1eddi cho c\u00e1c l\u1edbp h\u1ecdc c\u1ee7a tr\u1ebb em, gi\u00fap tr\u1ebb ph\u00e1t tri\u1ec3n t\u01b0 duy to\u00e1n h\u1ecdc v\u00e0 h\u1ecdc ti\u1ebfng Anh t\u1ed1t h\u01a1n. <\/p>\n<p dir=\"ltr\"><img decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/don-vi-do-do-dai-la-gi-19.jpg\" alt=\"Shining Home - Gia \u0111\u00ecnh Anh Ng\u1eef Math l\u00e0 m\u1ed9t ch\u01b0\u01a1ng tr\u00ecnh to\u00e1n h\u1ecdc ch\u1ea5t l\u01b0\u1ee3ng b\u1eb1ng ti\u1ebfng Anh m\u00e0 h\u00e0ng tri\u1ec7u ph\u1ee5 huynh tin t\u01b0\u1edfng. (\u1ea2nh: Kh\u1ec9)\" width=\"100%\"><\/p>\n<p dir=\"ltr\">Hi\u1ec7n t\u1ea1i, Shining Home &#8211; Gia \u0111\u00ecnh Anh Ng\u1eef Math c\u00f3 h\u01a1n 400 b\u00e0i h\u1ecdc th\u00fa v\u1ecb, h\u01a1n 10.000 ho\u1ea1t \u0111\u1ed9ng t\u01b0\u01a1ng t\u00e1c, l\u00e0m cho b\u00e0i h\u1ecdc c\u1ee7a m\u1ed7i \u0111\u1ee9a tr\u1ebb tr\u1edf n\u00ean th\u00fa v\u1ecb h\u01a1n, &#8220;h\u1ecdc v\u00e0 ch\u01a1i v\u00e0 h\u1ecdc h\u1ecfi&#8221;, t\u00f4i kh\u00f4ng ch\u1ecbu \u00e1p l\u1ef1c v\u00e0 th\u00fac \u0111\u1ea9y s\u1ef1 s\u00e1ng t\u1ea1o c\u1ee7a b\u1ea1n h\u01a1n. Ngo\u00e0i c\u00e1c ho\u1ea1t \u0111\u1ed9ng tr\u00ean \u1ee9ng d\u1ee5ng, \u0111\u0103ng k\u00fd cho h\u1ecdc sinh Shining Home &#8211; Gia \u0111\u00ecnh Anh Ng\u1eef Math, h\u1ecdc sinh c\u00f2n nh\u1eadn \u0111\u01b0\u1ee3c cu\u1ed1n s\u00e1ch &#8220;S\u1ed5 l\u00e0m to\u00e1n kh\u1ec9&#8221; v\u1edbi 3 c\u1ea5p \u0111\u1ed9 t\u01b0\u01a1ng \u1ee9ng v\u1edbi c\u1ea5p \u0111\u1ed9 c\u1ee7a m\u1ed7i \u0111\u1ee9a tr\u1ebb, h\u1ed7 tr\u1ee3 c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng to\u00e1n h\u1ecdc cho h\u1ecdc sinh. <\/p>\n<p dir=\"ltr\" style=\"text-align: center\"><a href=\"https:\/\/www.youtube.com\/watch?v=7DSJPVHFROS\" target=\"_blank\" rel=\"noopener\">https:\/\/www.youtube.com\/watch?v=7DSJPVHFROS<\/a><\/p>\n<p dir=\"ltr\">&gt;&gt;&gt; T\u1ea3i xu\u1ed1ng Shining Home &#8211; Gia \u0111\u00ecnh Anh Ng\u1eef Math ngay b\u00e2y gi\u1edd \u0111\u1ec3 tr\u1ea3i nghi\u1ec7m mi\u1ec5n ph\u00ed v\u00e0 \u0111\u0103ng k\u00fd \u0111\u1ec3 nh\u1eadn l\u1eddi khuy\u00ean \u1edf \u0111\u00e2y. <\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Tim_hieu_mot_so_cong_cu_va_cach_do_do_dai\"><\/span>T\u00ecm hi\u1ec3u m\u1ed9t s\u1ed1 c\u00f4ng c\u1ee5 v\u00e0 c\u00e1ch \u0111o \u0111\u1ed9 d\u00e0i <span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><img decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/don-vi-do-do-dai-la-gi-2.jpg\" alt=\"C\u00f4ng c\u1ee5 \u0111o chi\u1ec1u d\u00e0i chung. (\u1ea2nh: Canva.com)\" width=\"100%\"><\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Do_dai_cua_cac_cong_cu_do_do_luong_la_bao_nhieu\"><\/span>\u0110\u1ed9 d\u00e0i c\u1ee7a c\u00e1c c\u00f4ng c\u1ee5 \u0111o \u0111o l\u01b0\u1eddng l\u00e0 bao nhi\u00eau<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">\u0110\u1ec3 \u0111o \u0111\u1ed9 d\u00e0i c\u1ee7a v\u1eadt th\u1ec3, ng\u01b0\u1eddi ta c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng th\u01b0\u1edbc k\u1ebb<\/p>\n<p dir=\"ltr\">M\u1ed9t s\u1ed1 bi\u1ec7n ph\u00e1p chi\u1ec1u d\u00e0i ph\u1ed5 bi\u1ebfn l\u00e0 <\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Th\u01b0\u1edbc \u0111i th\u1eb3ng: \u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng trong h\u1ecdc t\u1eadp, th\u01b0\u1edbc \u0111o qu\u1ea7n \u00e1o, th\u01b0\u1edbc k\u1ebb th\u1eb3ng trong x\u00e2y d\u1ef1ng &#8230;<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Ruler: \u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111o chi\u1ec1u d\u00e0i l\u1edbn h\u01a1n nh\u01b0 nh\u00e0, c\u1eeda, b\u00e0n &#8230;<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Ng\u01b0\u1eddi cai tr\u1ecb: \u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111o chi\u1ec1u cao &#8230;<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">K\u1eb9p<\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\">M\u1ecdi ng\u01b0\u1eddi t\u1ea1o ra nhi\u1ec1u lo\u1ea1i th\u01b0\u1edbc kh\u00e1c nhau \u0111\u1ec3 \u0111o chi\u1ec1u d\u00e0i nh\u01b0 v\u1eady \u0111\u1ec3 n\u00f3 ph\u00f9 h\u1ee3p v\u1edbi h\u00ecnh d\u1ea1ng v\u00e0 k\u00edch th\u01b0\u1edbc c\u1ee7a v\u1eadt th\u1ec3, do \u0111\u00f3 khi \u0111\u01b0\u1ee3c \u0111o ch\u00ednh x\u00e1c h\u01a1n <\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Xac_dinh_nguoi_cai_tri_cua_GHD_va_DCN\"><\/span>X\u00e1c \u0111\u1ecbnh ng\u01b0\u1eddi cai tr\u1ecb c\u1ee7a GHD v\u00e0 DCN<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">Khi s\u1eed d\u1ee5ng b\u1ea5t k\u1ef3 c\u00f4ng c\u1ee5 \u0111o \u0111\u1ed9 d\u00e0i n\u00e0o, c\u1ea7n ph\u1ea3i bi\u1ebft gi\u1edbi h\u1ea1n \u0111o v\u00e0 ph\u00e2n chia t\u1ed1i thi\u1ec3u<\/p>\n<p dir=\"ltr\">Gi\u1edbi h\u1ea1n \u0111o (GHD) c\u1ee7a th\u01b0\u1edbc \u0111o l\u00e0 chi\u1ec1u d\u00e0i t\u1ed1i \u0111a \u0111\u01b0\u1ee3c ghi l\u1ea1i tr\u00ean th\u01b0\u1edbc<\/p>\n<p dir=\"ltr\">S\u1ef1 ph\u00e2n chia t\u1ed1i thi\u1ec3u (\u0110CN) c\u1ee7a ng\u01b0\u1eddi cai tr\u1ecb l\u00e0 \u0111\u1ed9 d\u00e0i gi\u1eefa 2 ph\u00e2n chia li\u00ean ti\u1ebfp tr\u00ean th\u01b0\u1edbc \u0111o<\/p>\n<p dir=\"ltr\">C\u00f4ng th\u1ee9c t\u00ednh to\u00e1n th\u01b0\u1edbc k\u1ebb nh\u00e0 n\u01b0\u1edbc:<\/p>\n<p dir=\"ltr\">Dcnn = (s\u1ed1 l\u01b0\u1ee3ng l\u1edbn &#8211; s\u1ed1 tr\u1ebb em)\/ s\u1ed1 l\u01b0\u1ee3ng \u0111o\u1ea1n v\u0103n <\/p>\n<p dir=\"ltr\">V\u00ed d\u1ee5 <\/p>\n<p dir=\"ltr\">(1 &#8211; 0)\/10 = 0,1 cm <\/p>\n<p dir=\"ltr\"><img decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/don-vi-do-do-dai-la-gi-3.jpg\" alt=\"X\u00e1c \u0111\u1ecbnh s\u1ef1 ph\u00e2n chia nh\u1ecf nh\u1ea5t c\u1ee7a ng\u01b0\u1eddi cai tr\u1ecb. (\u1ea2nh: Canva.com)\" width=\"100%\"><\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Cach_do_do_dai\"><\/span>C\u00e1ch \u0111o \u0111\u1ed9 d\u00e0i <span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">C\u00e1c b\u01b0\u1edbc \u0111\u1ec3 \u0111o \u0111\u1ed9 d\u00e0i c\u1ee7a m\u1ed9t v\u1eadt th\u1ec3 v\u1edbi th\u01b0\u1edbc k\u1ebb ch\u00ednh x\u00e1c<\/p>\n<p dir=\"ltr\">B\u01b0\u1edbc 1: \u01af\u1edbc t\u00ednh \u0111\u1ed9 d\u00e0i c\u1ee7a ph\u00e9p \u0111o <\/p>\n<p dir=\"ltr\">B\u01b0\u1edbc 2: Ch\u1ecdn m\u1ed9t bi\u1ec7n ph\u00e1p v\u1edbi GHD v\u00e0 Scholows <\/p>\n<p dir=\"ltr\">V\u00ed d\u1ee5, khi \u0111o chi\u1ec1u d\u00e0i c\u1ee7a b\u1ea3ng nghi\u00ean c\u1ee9u, ch\u00fang ta n\u00ean s\u1eed d\u1ee5ng th\u01b0\u1edbc \u0111o \u0111\u1ec3 gi\u00fap \u0111o nhanh h\u01a1n khi s\u1eed d\u1ee5ng th\u01b0\u1edbc k\u1ebb (s\u1eed d\u1ee5ng th\u01b0\u1edbc k\u1ebb \u0111\u1ec3 \u0111o nhi\u1ec1u l\u1ea7n v\u00e0 sau \u0111\u00f3 t\u1ed5ng s\u1ed1 \u0111o s\u1ebd m\u1ea5t r\u1ea5t nhi\u1ec1u th\u1eddi gian)<\/p>\n<p dir=\"ltr\">B\u01b0\u1edbc 3: \u0110\u1eb7t ng\u01b0\u1eddi cai tr\u1ecb v\u00e0 m\u1eaft vu\u00f4ng g\u00f3c v\u1edbi ng\u01b0\u1eddi cai tr\u1ecb<\/p>\n<p dir=\"ltr\">V\u00ed d\u1ee5: \u0110\u1ec3 \u0111o chi\u1ec1u d\u00e0i b\u00fat ch\u00ec ch\u00ednh x\u00e1c, ch\u00fang t\u00f4i \u0111\u1eb7t s\u1ed1 \u0111o d\u1ecdc theo chi\u1ec1u d\u00e0i c\u1ee7a b\u00fat ch\u00ec v\u00e0 \u0111\u01b0\u1eddng 0 c\u1ee7a k\u00edch th\u01b0\u1edbc ngang l\u00e0 m\u1ed9t \u0111\u1ea7u c\u1ee7a b\u00fat ch\u00ec. \u0110\u1eb7t m\u1eaft vu\u00f4ng g\u00f3c v\u1edbi b\u0103ng kh\u00e1c \u1edf \u0111\u1ea7u kia c\u1ee7a b\u00fat ch\u00ec. <\/p>\n<p dir=\"ltr\">B\u01b0\u1edbc 4: \u0110\u1ecdc \u0111\u1ed9 d\u00e0i c\u1ee7a \u0111\u1ed9 d\u00e0i c\u1ee7a \u0111\u1ed1i t\u01b0\u1ee3ng \u0111\u01b0\u1ee3c \u0111o theo gi\u00e1 tr\u1ecb c\u1ee7a \u0111\u01b0\u1eddng g\u1ea7n nh\u1ea5t v\u1edbi \u0111\u1ea7u kia c\u1ee7a \u0111\u1ed1i t\u01b0\u1ee3ng. <\/p>\n<p dir=\"ltr\">B\u01b0\u1edbc 5: Vi\u1ebft k\u1ebft qu\u1ea3 \u0111o theo \u0111\u01a1n v\u1ecb tr\u1ea1ng th\u00e1i cho m\u1ed7i ph\u00e9p \u0111o.<\/p>\n<table style=\"border-collapse: collapse;margin-left: auto;margin-right: auto;width: 100%;background-color: #fbeeb8\" border=\"1\">\n<tr>\n<td style=\"width: 98.5932%;background-color: #c2e0f4;text-align: center\">H\u1ecdc to\u00e1n r\u1ea5t d\u1ec5 d\u00e0ng v\u1edbi to\u00e1n h\u1ecdc &#8211; \u1ee8ng d\u1ee5ng h\u1ecdc to\u00e1n theo Ch\u01b0\u01a1ng tr\u00ecnh Gi\u00e1o d\u1ee5c m\u1edbi cho tr\u01b0\u1eddng m\u1ea7m non v\u00e0 Tr\u01b0\u1eddng ti\u1ec3u h\u1ecdc s\u1ed1 1 t\u1ea1i Vi\u1ec7t Nam. C\u01a1 h\u1ed9i nh\u1eadn \u0111\u01b0\u1ee3c m\u1ed9t \u0111\u1ed9ng l\u1ef1c l\u1edbn l\u00ean t\u1edbi 40% v\u00e0 nhi\u1ec1u m\u00f3n qu\u00e0 h\u1ea5p d\u1eabn! <img decoding=\"async\" style=\"margin-left: auto;margin-right: auto\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/taimienphiMM.png\" width=\"185\"><\/td>\n<\/tr>\n<\/table>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Bang_do_don_vi_chieu_dai_va_cach_thay_doi_don_vi_do_chieu_dai\"><\/span>B\u1ea3ng \u0111o \u0111\u01a1n v\u1ecb chi\u1ec1u d\u00e0i v\u00e0 c\u00e1ch thay \u0111\u1ed5i \u0111\u01a1n v\u1ecb \u0111o chi\u1ec1u d\u00e0i <span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Trong ph\u1ea7n ti\u1ebfp theo c\u1ee7a b\u00e0i vi\u1ebft, ch\u00fang ta s\u1ebd t\u00ecm hi\u1ec3u c\u1ee5 th\u1ec3 \u0111\u01a1n v\u1ecb c\u1ee7a \u0111\u01a1n v\u1ecb \u0111o \u0111\u1ed9 d\u00e0i, c\u00e1ch c\u1ee5 th\u1ec3 \u0111\u1ec3 thay \u0111\u1ed5i t\u1eebng \u0111\u01a1n v\u1ecb, \u0111\u1ed9c gi\u1ea3 kh\u00f4ng b\u1ecf l\u1ee1 n\u00f3!<\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Bang_do_luong_va_doc_don_vi\"><\/span>B\u1ea3ng \u0111o l\u01b0\u1eddng v\u00e0 \u0111\u1ecdc \u0111\u01a1n v\u1ecb  <span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\"><img decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/don-vi-do-do-dai-la-gi-4.jpg\" alt=\"B\u1ea3ng \u0111o \u0111\u01a1n v\u1ecb. (\u1ea2nh: Kh\u1ec9)\" width=\"100%\"><\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Cach_thay_doi_do_dai_cua_don_vi_do_luong\"><\/span>C\u00e1ch thay \u0111\u1ed5i \u0111\u1ed9 d\u00e0i c\u1ee7a \u0111\u01a1n v\u1ecb \u0111o l\u01b0\u1eddng <span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">\u0110\u1ec3 bi\u1ebft c\u00e1ch thay \u0111\u1ed5i c\u00e1c \u0111\u01a1n v\u1ecb \u0111o l\u01b0\u1eddng theo chi\u1ec1u d\u00e0i, vui l\u00f2ng xem b\u1ea3ng chuy\u1ec3n \u0111\u1ed5i c\u00e1c \u0111\u01a1n v\u1ecb \u0111o sau \u0111\u00e2y <\/p>\n<h4 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Bang_cac_don_vi_chuyen_doi_cua_phep_do_chieu_dai\"><\/span>B\u1ea3ng c\u00e1c \u0111\u01a1n v\u1ecb chuy\u1ec3n \u0111\u1ed5i c\u1ee7a ph\u00e9p \u0111o chi\u1ec1u d\u00e0i <span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p dir=\"ltr\"><img decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/don-vi-do-do-dai-la-gi-5.png\" alt=\"L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 thay \u0111\u1ed5i \u0111\u01a1n v\u1ecb \u0111\u1ed9 d\u00e0i \u0111o. (\u1ea2nh: Kh\u1ec9) \" width=\"800\"><\/p>\n<p dir=\"ltr\">Gi\u1ea3i th\u00edch b\u1ea3ng chuy\u1ec3n \u0111\u1ed5i \u1edf tr\u00ean: <\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">\u0110o \u0111\u01a1n v\u1ecb m (m\u00e9t) \u1edf gi\u1eefa, \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 chuy\u1ec3n \u0111\u1ed5i sang c\u00e1c \u0111\u01a1n v\u1ecb \u0111o chi\u1ec1u d\u00e0i c\u00f2n l\u1ea1i <\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">C\u00e1c \u0111\u01a1n v\u1ecb \u0111o \u0111\u01b0\u1ee3c s\u1eafp x\u1ebfp t\u1eeb l\u1edbn \u0111\u1ebfn nh\u1ecf, t\u1eeb tr\u00e1i sang ph\u1ea3i nh\u01b0 sau: <\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\">Km <\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Theo th\u1ee9 t\u1ef1 c\u1ee7a c\u00e1c \u0111\u01a1n v\u1ecb tr\u00ean: M\u1ed7i \u0111\u01a1n v\u1ecb sau \u0111\u01a1n v\u1ecb g\u1ea5p 10 l\u1ea7n, m\u1ed7i \u0111\u01a1n v\u1ecb b\u1eb1ng 1\/10 c\u1ee7a \u0111\u01a1n v\u1ecb tr\u01b0\u1edbc v\u00ed d\u1ee5: 1 \u0111\u01a1n v\u1ecb km 10 l\u1ea7n 1 l\u1ea7n m\u1ed9t \u0111\u01a1n v\u1ecb HM<\/p>\n<\/li>\n<\/ul>\n<h4 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Cach_thay_doi_do_dai_cua_don_vi_do_luong-2\"><\/span>C\u00e1ch thay \u0111\u1ed5i \u0111\u1ed9 d\u00e0i c\u1ee7a \u0111\u01a1n v\u1ecb \u0111o l\u01b0\u1eddng <span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p dir=\"ltr\">\u0110\u1ec3 c\u00f3 th\u1ec3 thay \u0111\u1ed5i c\u00e1c \u0111\u01a1n v\u1ecb \u0111o ch\u00ednh x\u00e1c nh\u1ea5t, ch\u00fang t\u00f4i d\u1ef1a v\u00e0o 3 c\u00e1ch sau <\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\"><em>N\u1ebfu b\u1ea1n c\u1ea7n thay \u0111\u1ed5i t\u1eeb m\u1ed9t \u0111\u01a1n v\u1ecb l\u1edbn h\u01a1n sang m\u1ed9t \u0111\u01a1n v\u1ecb nh\u1ecf h\u01a1n, ch\u00fang t\u00f4i nh\u00e2n s\u1ed1 \u0111\u00f3 v\u1edbi 10 <\/em><\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\">V\u00ed d\u1ee5: <\/p>\n<p dir=\"ltr\">1m = 10 dm <\/p>\n<p dir=\"ltr\">10 m = 100 dm <\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\"><em>N\u1ebfu b\u1ea1n c\u1ea7n thay \u0111\u1ed5i t\u1eeb m\u1ed9t \u0111\u01a1n v\u1ecb l\u1edbn h\u01a1n sang m\u1ed9t \u0111\u01a1n v\u1ecb nh\u1ecf h\u01a1n, ch\u00fang t\u00f4i chia s\u1ed1 \u0111\u00f3 v\u1edbi 10 <\/em><\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\">V\u00ed d\u1ee5: <\/p>\n<p dir=\"ltr\">10 dm = 1 m <\/p>\n<p dir=\"ltr\">1 m = 1\/10 \u0111\u1eadp <\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\"><em>C\u00e1c tr\u01b0\u1eddng h\u1ee3p kh\u00e1c <\/em><\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\">1 km =? m <\/p>\n<p dir=\"ltr\">\u0110\u1ed1i v\u1edbi c\u00e1c \u0111\u01a1n v\u1ecb c\u00e1ch nhau, quan s\u00e1t b\u1ea3ng tr\u00ean, ch\u00fang ta c\u00f3 th\u1ec3 th\u1ea5y r\u1eb1ng KM v\u00e0 M c\u00e1ch nhau 3 \u0111\u01a1n v\u1ecb, m\u1ed7i \u0111\u01a1n v\u1ecb g\u1ea5p 10 l\u1ea7n so v\u1edbi nhau. N\u00ean 1 km = 10 x 10 x 10 = 1000 m <\/p>\n<p dir=\"ltr\"><img decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/don-vi-do-do-dai-6.jpg\" alt=\"H\u00e3y nh\u1edb r\u1eb1ng quy t\u1eafc thay \u0111\u1ed5i c\u00e1c \u0111\u01a1n v\u1ecb \u0111o \u0111\u1ed9 d\u00e0i. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"100%\"><\/p>\n<\/p>\n<h4 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Cac_bai_tap_thuc_hanh_de_thay_doi_mot_so_don_vi_do_chieu_dai\"><\/span>C\u00e1c b\u00e0i t\u1eadp th\u1ef1c h\u00e0nh \u0111\u1ec3 thay \u0111\u1ed5i m\u1ed9t s\u1ed1 \u0111\u01a1n v\u1ecb \u0111o chi\u1ec1u d\u00e0i <span class=\"ez-toc-section-end\"><\/span><\/h4>\n<ol>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">2 km =? m<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">1 hm =? m <\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">1 \u0111\u1eadp =? m <\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">2 km =? DM<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">10 \u0111\u1eadp =? m<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">200 cm =? M<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">1000 mm =? cm<\/p>\n<\/li>\n<\/ol>\n<p dir=\"ltr\">Tr\u1ea3 l\u1eddi<\/p>\n<ol>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">2 km = 2000 m <\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">1 hm = 100 m <\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">1 \u0111\u1eadp = 10 m <\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">2 km = 200 dm <\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">10 \u0111\u1eadp = 100 m <\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">200 cm = 2 m <\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">1000 mm = 100 cm <\/p>\n<\/li>\n<\/ol>\n<p>Xem th\u00eam: Thi\u1ebft b\u1ecb \u0111o th\u1ec3 t\u00edch ch\u1ea5t l\u1ecfng l\u00e0 g\u00ec? H\u01b0\u1edbng d\u1eabn chi ti\u1ebft \u0111\u1ec3 \u0111o th\u1ec3 t\u00edch ch\u1ea5t l\u1ecfng<\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Tim_hieu_cac_don_vi_do_chieu_dai_quoc_te\"><\/span>T\u00ecm hi\u1ec3u c\u00e1c \u0111\u01a1n v\u1ecb \u0111o chi\u1ec1u d\u00e0i qu\u1ed1c t\u1ebf <span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">Ngo\u00e0i \u0111\u01a1n v\u1ecb \u0111o l\u01b0\u1eddng l\u00e0 m\u00e9t, m\u1ed9t s\u1ed1 qu\u1ed1c gia c\u0169ng s\u1eed d\u1ee5ng c\u00e1c \u0111\u01a1n v\u1ecb \u0111o chi\u1ec1u d\u00e0i kh\u00e1c: <\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">1 in (inch) = 0,0254 m = 2,54 cm <\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">1 d\u1eb7m (d\u1eb7m) = 1609 m (~ 1,6 km) <\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\">M\u1ed9t s\u1ed1 \u0111\u01a1n v\u1ecb \u0111o chi\u1ec1u d\u00e0i v\u1edbi kho\u1ea3ng c\u00e1ch l\u1edbn h\u01a1n nh\u01b0 \u0111\u01a1n v\u1ecb thi\u00ean v\u0103n (Au), \u0111\u01a1n v\u1ecb \u00e1nh s\u00e1ng -five -five (th\u1ee7y tinh) v\u00e0 \u0111\u01a1n v\u1ecb \u0111o \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111o k\u00edch th\u01b0\u1edbc nh\u1ecf c\u1ee7a micromet (m), nanomet (nm), angstrom<\/p>\n<p dir=\"ltr\">V\u00ec v\u1eady, Shining Home &#8211; Gia \u0111\u00ecnh Anh Ng\u1eef \u0111\u00e3 chia s\u1ebb t\u1ea5t c\u1ea3 ki\u1ebfn \u200b\u200bth\u1ee9c v\u1ec1 \u0111\u1ed9 d\u00e0i, \u0111\u01a1n v\u1ecb \u0111o l\u01b0\u1eddng l\u00e0 g\u00ec, l\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 \u0111o \u0111\u1ed9 d\u00e0i cho h\u1ecdc sinh. Hy v\u1ecdng r\u1eb1ng, b\u00e0i vi\u1ebft tr\u00ean s\u1ebd gi\u00fap b\u1ea1n r\u1ea5t nhi\u1ec1u trong su\u1ed1t qu\u00e1 tr\u00ecnh h\u1ecdc t\u1eadp, \u0111\u1eb7c bi\u1ec7t l\u00e0 tr\u1ebb em bi\u1ebft c\u00e1ch \u00e1p d\u1ee5ng nh\u1eefng g\u00ec \u0111\u01b0\u1ee3c h\u1ecdc v\u00e0o cu\u1ed9c s\u1ed1ng h\u00e0ng ng\u00e0y. <\/p>\n<p>Ngu\u1ed3n: <a href=\"http:\/\/www.ckconitsha.com\/vn\/\">http:\/\/www.ckconitsha.com\/vn\/<\/a> T\u00e1c gi\u1ea3: <a href=\"https:\/\/www.ckconitsha.com\/vn\/author\/nguyenlandung\">Nguy\u1ec5n L\u00e2n d\u0169ng<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>N\u1ebfu b\u1ea1n ch\u1ec9 s\u1eed d\u1ee5ng m\u1eaft th\u01b0\u1eddng, b\u1ea1n c\u00f3 th\u1ec3 c\u1ea3m nh\u1eadn \u0111\u01b0\u1ee3c k\u00edch th\u01b0\u1edbc c\u1ee7a b\u1ea5t k\u1ef3 \u0111\u1ed1i t\u01b0\u1ee3ng n\u00e0o kh\u00f4ng? Trong b\u00e0i h\u1ecdc ng\u00e0y h\u00f4m nay, Shining Home &#8211; Gia \u0111\u00ecnh Anh Ng\u1eef s\u1ebd chia s\u1ebb v\u1edbi c\u00e1c sinh vi\u00ean \u0111\u01a1n v\u1ecb \u0111o \u0111\u1ed9 d\u00e0i? Cho bi\u1ebft c\u00e1ch \u0111o \u0111\u1ed9 d\u00e0i ch\u00ednh x\u00e1c&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[100],"tags":[],"class_list":["post-15177","post","type-post","status-publish","format-standard","hentry","category-kien-thuc"],"_links":{"self":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/15177","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/comments?post=15177"}],"version-history":[{"count":2,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/15177\/revisions"}],"predecessor-version":[{"id":22060,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/15177\/revisions\/22060"}],"wp:attachment":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/media?parent=15177"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/categories?post=15177"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/tags?post=15177"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}