{"id":14817,"date":"2025-06-10T07:29:34","date_gmt":"2025-06-10T00:29:34","guid":{"rendered":"https:\/\/www.ckconitsha.com\/vn\/?p=14817"},"modified":"2025-07-05T12:45:05","modified_gmt":"2025-07-05T05:45:05","slug":"huong-dan-cach-doc-va-viet-so-18-trong-so-la-ma-chi-tiet-nhat","status":"publish","type":"post","link":"https:\/\/www.ckconitsha.com\/vn\/huong-dan-cach-doc-va-viet-so-18-trong-so-la-ma-chi-tiet-nhat\/","title":{"rendered":"H\u01b0\u1edbng d\u1eabn c\u00e1ch \u0111\u1ecdc v\u00e0 vi\u1ebft s\u1ed1 18 trong s\u1ed1 la m\u00e3 chi ti\u1ebft nh\u1ea5t"},"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\/huong-dan-cach-doc-va-viet-so-18-trong-so-la-ma-chi-tiet-nhat\/#Lam_the_nao_de_doc_so_18_cua_nguoi_La_Ma_thich\" >L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 \u0111\u1ecdc s\u1ed1 18 c\u1ee7a ng\u01b0\u1eddi La M\u00e3 th\u00edch?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.ckconitsha.com\/vn\/huong-dan-cach-doc-va-viet-so-18-trong-so-la-ma-chi-tiet-nhat\/#Quy_tac_viet_so_18_la_gi\" >Quy t\u1eafc vi\u1ebft s\u1ed1 18 l\u00e0 g\u00ec?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.ckconitsha.com\/vn\/huong-dan-cach-doc-va-viet-so-18-trong-so-la-ma-chi-tiet-nhat\/#Cac_loai_bai_tap_tren_18_trong_so_nhung_nguoi_La_Ma_thong_thuong\" >C\u00e1c lo\u1ea1i b\u00e0i t\u1eadp tr\u00ean 18 trong s\u1ed1 nh\u1eefng ng\u01b0\u1eddi La M\u00e3 th\u00f4ng th\u01b0\u1eddng<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.ckconitsha.com\/vn\/huong-dan-cach-doc-va-viet-so-18-trong-so-la-ma-chi-tiet-nhat\/#Mau_1_Them_so_18_ve_so_luong_La_Ma\" >M\u1eabu 1: Th\u00eam s\u1ed1 18 v\u1ec1 s\u1ed1 l\u01b0\u1ee3ng La M\u00e3<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.ckconitsha.com\/vn\/huong-dan-cach-doc-va-viet-so-18-trong-so-la-ma-chi-tiet-nhat\/#Mau_2_Xac_dinh_so_18_trong_chuoi_da_cho\" >M\u1eabu 2: X\u00e1c \u0111\u1ecbnh s\u1ed1 18 trong chu\u1ed7i \u0111\u00e3 cho<\/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\/huong-dan-cach-doc-va-viet-so-18-trong-so-la-ma-chi-tiet-nhat\/#Mau_3_So_sanh_cac_so_khac_cua_Rome_voi_so_18\" >M\u1eabu 3: So s\u00e1nh c\u00e1c s\u1ed1 kh\u00e1c c\u1ee7a Rome v\u1edbi s\u1ed1 18<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.ckconitsha.com\/vn\/huong-dan-cach-doc-va-viet-so-18-trong-so-la-ma-chi-tiet-nhat\/#Tom_tat_mot_so_bai_tap_ve_18_nguoi_La_Ma_de_em_be_thuc_hanh\" >T\u00f3m t\u1eaft m\u1ed9t s\u1ed1 b\u00e0i t\u1eadp v\u1ec1 18 ng\u01b0\u1eddi La M\u00e3 \u0111\u1ec3 em b\u00e9 th\u1ef1c h\u00e0nh<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.ckconitsha.com\/vn\/huong-dan-cach-doc-va-viet-so-18-trong-so-la-ma-chi-tiet-nhat\/#Bai_tap_1\" >B\u00e0i t\u1eadp 1<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.ckconitsha.com\/vn\/huong-dan-cach-doc-va-viet-so-18-trong-so-la-ma-chi-tiet-nhat\/#Bai_tap_2\" >B\u00e0i t\u1eadp 2<\/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\/huong-dan-cach-doc-va-viet-so-18-trong-so-la-ma-chi-tiet-nhat\/#Bai_tap_3\" >B\u00e0i t\u1eadp 3<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.ckconitsha.com\/vn\/huong-dan-cach-doc-va-viet-so-18-trong-so-la-ma-chi-tiet-nhat\/#Bai_tap_4\" >B\u00e0i t\u1eadp 4<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.ckconitsha.com\/vn\/huong-dan-cach-doc-va-viet-so-18-trong-so-la-ma-chi-tiet-nhat\/#Bai_tap_4-2\" >B\u00e0i t\u1eadp 4<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/www.ckconitsha.com\/vn\/huong-dan-cach-doc-va-viet-so-18-trong-so-la-ma-chi-tiet-nhat\/#Bai_tap_5\" >B\u00e0i t\u1eadp 5<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/www.ckconitsha.com\/vn\/huong-dan-cach-doc-va-viet-so-18-trong-so-la-ma-chi-tiet-nhat\/#Bai_tap_6\" >B\u00e0i t\u1eadp 6<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/www.ckconitsha.com\/vn\/huong-dan-cach-doc-va-viet-so-18-trong-so-la-ma-chi-tiet-nhat\/#Cach_tot_nhat_de_giup_em_be_cua_ban_nho_so_tot_nhat_18\" >C\u00e1ch t\u1ed1t nh\u1ea5t \u0111\u1ec3 gi\u00fap em b\u00e9 c\u1ee7a b\u1ea1n nh\u1edb s\u1ed1 t\u1ed1t nh\u1ea5t 18<\/a><\/li><\/ul><\/nav><\/div>\n<\/p>\n<p>S\u1ed1 18 c\u1ee7a s\u1ed1 La M\u00e3 l\u00e0 m\u1ed9t trong nh\u1eefng con s\u1ed1 c\u01a1 b\u1ea3n trong chu\u1ed7i La M\u00e3. V\u1eady l\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 \u0111\u1ecdc v\u00e0 l\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 vi\u1ebft R\u00f4 -ma 18 th\u00edch? H\u00e3y \u0111\u1ec3 kh\u1ec9 ph\u00e2n t\u00edch chi ti\u1ebft trong b\u00e0i vi\u1ebft sau.<\/p>\n<p>                        Xem t\u1ea5t c\u1ea3<\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Lam_the_nao_de_doc_so_18_cua_nguoi_La_Ma_thich\"><\/span>L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 \u0111\u1ecdc s\u1ed1 18 c\u1ee7a ng\u01b0\u1eddi La M\u00e3 th\u00edch?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">V\u1ec1 vi\u1ec7c \u0111\u1ecdc, s\u1ed1 18 v\u1eabn \u00e1p d\u1ee5ng c\u00e1c quy t\u1eafc \u0111\u1ecdc t\u1eeb tr\u00e1i sang ph\u1ea3i v\u1edbi c\u00e1c ch\u1eef s\u1ed1 v\u00e0 c\u00e1c nh\u00f3m gi\u1ea3m trong c\u00e1c s\u1ed1 La M\u00e3. Ch\u1eef s\u1ed1 \u0111\u1ea7u ti\u00ean \u0111\u01b0\u1ee3c \u0111\u1ecdc d\u01b0\u1edbi d\u1ea1ng h\u00e0ng ch\u1ee5c ch\u1eef s\u1ed1, c\u00e1c ch\u1eef s\u1ed1 ti\u1ebfp theo s\u1ebd l\u00e0 s\u1ed1 \u0111\u01a1n v\u1ecb. <\/p>\n<p dir=\"ltr\">C\u00e1ch \u0111\u1ecdc 18 trong s\u1ed1 La M\u00e3 t\u01b0\u01a1ng t\u1ef1 nh\u01b0 c\u00e1ch \u0111\u1ecdc c\u00e1c s\u1ed1 t\u1ef1 nhi\u00ean. C\u1ee5 th\u1ec3, s\u1ed1 18 l\u00e0 XVIII v\u1edbi x l\u00e0 h\u00e0ng ch\u1ee5c (10) v\u00e0 VIII l\u00e0 s\u1ed1 \u0111\u01a1n v\u1ecb (t\u00e1m). B\u00e0i \u0111\u1ecdc s\u1ed1 18 l\u00e0 m\u01b0\u1eddi t\u00e1m, c\u00e1ch \u0111\u1ecdc kh\u00f4ng kh\u00e1c g\u00ec Latin 18.<\/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\/1-so-18-trong-la-ma.jpg\" alt=\"H\u01b0\u1edbng d\u1eabn v\u1ec1 c\u00e1ch \u0111\u1ecdc 18 trong La M\u00e3 (Ngu\u1ed3n: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"100%\"><\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Quy_tac_viet_so_18_la_gi\"><\/span>Quy t\u1eafc vi\u1ebft s\u1ed1 18 l\u00e0 g\u00ec?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">V\u1ec1 c\u00e1c quy t\u1eafc c\u1ee7a ch\u1eef s\u1ed1 La M\u00e3, s\u1ed1 18 v\u1eabn \u00e1p d\u1ee5ng quy t\u1eafc chung trong c\u00e1ch vi\u1ebft c\u00e1c s\u1ed1 La M\u00e3. S\u1ed1 18 \u0111\u01b0\u1ee3c vi\u1ebft l\u00e0 XVIII. Do \u0111\u00f3, c\u00f3 th\u1ec3 th\u1ea5y r\u1eb1ng c\u00e1c ch\u1eef s\u1ed1 trong s\u1ed1 18 v\u1eabn \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng t\u1eeb c\u00e1c ch\u1eef s\u1ed1 c\u01a1 b\u1ea3n. C\u1ee5 th\u1ec3, s\u1ed1 n\u00e0y s\u1eed d\u1ee5ng c\u00e1c ch\u1eef s\u1ed1 c\u1ee7a X, V v\u00e0 I \u0111\u1ec3 t\u1eadp h\u1ee3p l\u1ea1i v\u1edbi nhau. <\/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\/2-so-18-trong-la-ma.jpg\" alt=\"Quy t\u1eafc vi\u1ebft ch\u1eef s\u1ed1 La M\u00e3 l\u00e0 g\u00ec? (Ngu\u1ed3n h\u00ecnh \u1ea3nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"100%\"><\/p>\n<p dir=\"ltr\">S\u1ed1 18 \u00e1p d\u1ee5ng quy t\u1eafc c\u1ed9ng t\u1eeb c\u00e1c ch\u1eef s\u1ed1 c\u01a1 b\u1ea3n l\u00e0:<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">S\u1ed1 t\u00f4i kh\u00f4ng l\u1eb7p l\u1ea1i nhi\u1ec1u h\u01a1n 3 l\u1ea7n tr\u00ean 1 t\u00ednh to\u00e1n<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">S\u1ed1 v kh\u00f4ng l\u1eb7p l\u1ea1i nhi\u1ec1u h\u01a1n 1 l\u1ea7n tr\u00ean 1 t\u00ednh to\u00e1n.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">S\u1ed1 I \u0111\u01b0\u1ee3c l\u1eb7p l\u1ea1i g\u1ea5p 3 l\u1ea7n gi\u00e1 tr\u1ecb 3 l\u1ea7n.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Digit \u0111\u01b0\u1ee3c th\u00eam v\u00e0o b\u00ean ph\u1ea3i l\u00e0 c\u1ed9ng v\u00e0 lu\u00f4n nh\u1ecf h\u01a1n ch\u1eef s\u1ed1 g\u1ed1c. Nhi\u1ec1u ch\u1eef s\u1ed1 kh\u00f4ng v\u01b0\u1ee3t qu\u00e1 3 l\u1ea7n. <\/p>\n<\/li>\n<\/ul>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Cac_loai_bai_tap_tren_18_trong_so_nhung_nguoi_La_Ma_thong_thuong\"><\/span>C\u00e1c lo\u1ea1i b\u00e0i t\u1eadp tr\u00ean 18 trong s\u1ed1 nh\u1eefng ng\u01b0\u1eddi La M\u00e3 th\u00f4ng th\u01b0\u1eddng<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">\u0110\u1ec3 tr\u1ebb em n\u1eafm b\u1eaft c\u00e1ch vi\u1ebft, c\u00e1ch \u0111\u1ecdc s\u1ed1 18 b\u1eb1ng La M\u00e3, cha m\u1eb9 c\u00f3 th\u1ec3 \u0111\u1ec3 em b\u00e9 th\u1ef1c hi\u1ec7n c\u00e1c b\u00e0i t\u1eadp sau:<\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Mau_1_Them_so_18_ve_so_luong_La_Ma\"><\/span>M\u1eabu 1: Th\u00eam s\u1ed1 18 v\u1ec1 s\u1ed1 l\u01b0\u1ee3ng La M\u00e3<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">Lo\u1ea1i b\u00e0i t\u1eadp \u0111\u1ea7u ti\u00ean l\u00e0 th\u00eam v\u00e0 tr\u1eeb s\u1ed1 18 trong La M\u00e3. Lo\u1ea1i b\u00e0i t\u1eadp n\u00e0y s\u1ebd y\u00eau c\u1ea7u tr\u1ebb nh\u1edb c\u00e1c ch\u1eef s\u1ed1 La M\u00e3, \u0111\u1ecdc v\u00e0 vi\u1ebft c\u00e1c ch\u1eef s\u1ed1 n\u00e0y \u0111\u1ec3 th\u1ef1c hi\u1ec7n c\u00e1c t\u00ednh to\u00e1n c\u01a1 b\u1ea3n.<\/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\/3-so-18-trong-la-ma.jpg\" alt=\"L\u00e0m b\u00e0i t\u1eadp v\u1ec1 nh\u00e0 v\u1edbi s\u1ed1 La M\u00e3 \u0111\u01a1n gi\u1ea3n. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"100%\"><\/p>\n<p dir=\"ltr\">\u0110\u1ed1i v\u1edbi qu\u00e1 tr\u00ecnh th\u1ef1c hi\u1ec7n t\u00ednh to\u00e1n, tr\u1ebb s\u1ebd chuy\u1ec3n \u0111\u1ed5i c\u00e1c ch\u1eef s\u1ed1 La M\u00e3 th\u00e0nh s\u1ed1 Latin v\u00e0 sau \u0111\u00f3 th\u1ef1c hi\u1ec7n vi\u1ec7c b\u1ed5 sung v\u00e0 tr\u1eeb. Ti\u1ebfp theo, khi t\u00ednh to\u00e1n k\u1ebft qu\u1ea3, tr\u1ebb s\u1ebd chuy\u1ec3n \u0111\u1ed5i s\u1ed1 n\u00e0y th\u00e0nh ch\u1eef s\u1ed1 La M\u00e3.<\/p>\n<p dir=\"ltr\">V\u00ed d\u1ee5 <em>Xviii + vii = xxv ho\u1eb7c xviii &#8211; iii = xv.<\/em><\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Mau_2_Xac_dinh_so_18_trong_chuoi_da_cho\"><\/span>M\u1eabu 2: X\u00e1c \u0111\u1ecbnh s\u1ed1 18 trong chu\u1ed7i \u0111\u00e3 cho<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">Ngo\u00e0i h\u00ecnh th\u1ee9c kh\u1ea5u tr\u1eeb s\u1ed1 18 trong La M\u00e3, cha m\u1eb9 c\u00f3 th\u1ec3 ch\u1ecdn lo\u1ea1i b\u00e0i t\u1eadp \u0111\u1ec3 vi\u1ebft 18 theo tr\u00ecnh t\u1ef1 \u0111\u00e3 cho. B\u00e0i t\u1eadp n\u00e0y \u0111\u00f2i h\u1ecfi tr\u1ebb ph\u1ea3i nh\u1edb c\u00e1ch vi\u1ebft 18 \u0111\u1ec3 c\u00f3 th\u1ec3 x\u00e1c \u0111\u1ecbnh s\u1ed1 18 m\u1ed9t c\u00e1ch d\u1ec5 d\u00e0ng. <\/p>\n<p dir=\"ltr\">V\u00ed d\u1ee5: <em>T\u00ecm s\u1ed1 trong c\u00e1c chu\u1ed7i sau: VI, XVIII, IX, XIX<\/em><\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Mau_3_So_sanh_cac_so_khac_cua_Rome_voi_so_18\"><\/span>M\u1eabu 3: So s\u00e1nh c\u00e1c s\u1ed1 kh\u00e1c c\u1ee7a Rome v\u1edbi s\u1ed1 18<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">Ti\u1ebfp theo l\u00e0 lo\u1ea1i so s\u00e1nh s\u1ed1 La M\u00e3 v\u1edbi 18. Lo\u1ea1i b\u00e0i t\u1eadp n\u00e0y s\u1ebd y\u00eau c\u1ea7u tr\u1ebb n\u1eafm b\u1eaft \u0111\u01b0\u1ee3c v\u0103n b\u1ea3n c\u1ee7a t\u1eebng s\u1ed1 La M\u00e3, sau \u0111\u00f3 so s\u00e1nh v\u00e0 \u0111\u01b0a ra k\u1ebft qu\u1ea3.<\/p>\n<p dir=\"ltr\">V\u00ed d\u1ee5: <em>So s\u00e1nh 2 s\u1ed1 XVIII v\u00e0 XIX<\/em><\/p>\n<table style=\"border-collapse: collapse;width: 100.01%;background-color: #fbeeb8\" border=\"1\">\n<tr>\n<td style=\"width: 98.5932%\">\u0110\u1eebng b\u1ecf l\u1ee1 !! Ch\u01b0\u01a1ng tr\u00ecnh to\u00e1n h\u1ecdc b\u1eb1ng ti\u1ebfng Anh, gi\u00fap ph\u00e1t tri\u1ec3n t\u01b0 duy theo c\u00e1ch to\u00e0n di\u1ec7n nh\u1ea5t. Nh\u1eadn t\u1ed1i \u0111a 40% \u01b0u \u0111\u00e3i ngay t\u1ea1i \u0111\u00e2y!<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=\"Tom_tat_mot_so_bai_tap_ve_18_nguoi_La_Ma_de_em_be_thuc_hanh\"><\/span>T\u00f3m t\u1eaft m\u1ed9t s\u1ed1 b\u00e0i t\u1eadp v\u1ec1 18 ng\u01b0\u1eddi La M\u00e3 \u0111\u1ec3 em b\u00e9 th\u1ef1c h\u00e0nh<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 b\u00e0i t\u1eadp v\u1ec1 18 ng\u01b0\u1eddi La M\u00e3 cho tr\u1ebb em c\u00f3 th\u1ec3 luy\u1ec7n t\u1eadp t\u1ea1i nh\u00e0:<\/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\/4-so-18-trong-la-ma.jpg\" alt=\"T\u00f3m t\u1eaft c\u00e1c b\u00e0i t\u1eadp v\u1ec1 s\u1ed1 La M\u00e3. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"100%\"><\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Bai_tap_1\"><\/span>B\u00e0i t\u1eadp 1<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">Th\u1ef1c hi\u1ec7n t\u00ednh to\u00e1n sau:<\/p>\n<p dir=\"ltr\">M\u1ed9t. Xviii + xx<\/p>\n<p dir=\"ltr\">b. V + xviii<\/p>\n<p dir=\"ltr\">c. IX + XVIII<\/p>\n<p dir=\"ltr\">d. VI + XVIII<\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Bai_tap_2\"><\/span>B\u00e0i t\u1eadp 2<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">Th\u1ef1c hi\u1ec7n t\u00ednh to\u00e1n sau:<\/p>\n<p dir=\"ltr\">M\u1ed9t. XVIII &#8211; ix<\/p>\n<p dir=\"ltr\">b. Xxx &#8211; xviii<\/p>\n<p dir=\"ltr\">c. XVIII &#8211; III<\/p>\n<p dir=\"ltr\">d. XLIX &#8211; XVIII<\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Bai_tap_3\"><\/span>B\u00e0i t\u1eadp 3<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">Th\u1ef1c hi\u1ec7n t\u00ednh to\u00e1n sau:<\/p>\n<p dir=\"ltr\">M\u1ed9t. XVIII + IX<\/p>\n<p dir=\"ltr\">b. L &#8211; xviii<\/p>\n<p dir=\"ltr\">c. XVIII &#8211; VII<\/p>\n<p dir=\"ltr\">d. C &#8211; XVIII<\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Bai_tap_4\"><\/span>B\u00e0i t\u1eadp 4<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">T\u00ecm s\u1ed1 18 trong chu\u1ed7i s\u1ed1 sau, xvii, ix, xx, xviii<\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Bai_tap_4-2\"><\/span>B\u00e0i t\u1eadp 4<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">T\u00ecm s\u1ed1 18 trong chu\u1ed7i sau c\u1ee7a L, XVIII, XX, XIX, XL<\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Bai_tap_5\"><\/span>B\u00e0i t\u1eadp 5<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">So s\u00e1nh 2 s\u1ed1 sau:<\/p>\n<p dir=\"ltr\">M\u1ed9t. XVIII v\u00e0 XX<\/p>\n<p dir=\"ltr\">b. V v\u00e0 XVIII<\/p>\n<p dir=\"ltr\">c. XIV v\u00e0 XVIII<\/p>\n<p dir=\"ltr\">d. XVIII v\u00e0 XL<\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Bai_tap_6\"><\/span>B\u00e0i t\u1eadp 6<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">Khoanh tr\u00f2n s\u1ed1 18 ch\u1eef vi\u1ebft ch\u00ednh x\u00e1c \u1edf Rome<\/p>\n<p dir=\"ltr\">M\u1ed9t. Xviii<\/p>\n<p dir=\"ltr\">b. Iixx<\/p>\n<p dir=\"ltr\">c. XIIIV<\/p>\n<p dir=\"ltr\">Xem th\u00eam: H\u01b0\u1edbng d\u1eabn v\u1ec1 c\u00e1ch \u0111\u1ecdc v\u00e0 vi\u1ebft s\u1ed1 La M\u00e3 s\u1ed1 1 \u0111\u1ebfn 30 v\u1edbi em b\u00e9 kh\u00f4ng c\u00f2n kh\u00f3 kh\u0103n n\u1eefa<\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Cach_tot_nhat_de_giup_em_be_cua_ban_nho_so_tot_nhat_18\"><\/span>C\u00e1ch t\u1ed1t nh\u1ea5t \u0111\u1ec3 gi\u00fap em b\u00e9 c\u1ee7a b\u1ea1n nh\u1edb s\u1ed1 t\u1ed1t nh\u1ea5t 18<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">\u0110\u1ec3 gi\u00fap tr\u1ebb nh\u1edb s\u1ed1 18 d\u1ec5 nh\u1ea5t, sau \u0111\u00e2y s\u1ebd l\u00e0 m\u1ed9t v\u00e0i b\u01b0\u1edbc \u0111i tuy\u1ec7t v\u1eddi m\u00e0 cha m\u1eb9 n\u00ean ch\u00fa \u00fd v\u00e0 h\u01b0\u1edbng d\u1eabn con c\u00e1i.<\/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\/5-so-18-trong-la-ma.jpg\" alt=\"C\u00e1c k\u1ef9 thu\u1eadt tuy\u1ec7t v\u1eddi c\u1ee7a La M\u00e3 La M\u00e3 18 hi\u1ec7u qu\u1ea3 nh\u1ea5t. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"100%\"><\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">H\u00e3y nh\u1edb c\u00e1c quy t\u1eafc vi\u1ebft 18: \u0110\u1ec3 nghi\u00ean c\u1ee9u t\u1ed1t \u1edf s\u1ed1 18 trong La M\u00e3, b\u1ea1n c\u1ea7n nh\u1edb c\u00e1c quy t\u1eafc vi\u1ebft s\u1ed1 18 ch\u00ednh x\u00e1c v\u00e0 ch\u00ednh x\u00e1c nh\u1ea5t. Theo c\u00e1ch n\u00e0y, tr\u1ebb em c\u00f3 th\u1ec3 tr\u00e1nh nh\u1eefng sai l\u1ea7m trong qu\u00e1 tr\u00ecnh vi\u1ebft s\u1ed1, \u0111\u1ecdc s\u1ed1 v\u00e0 th\u1ef1c hi\u1ec7n c\u00e1c b\u00e0i t\u1eadp. <\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Th\u1ef1c h\u00e0nh m\u1ed7i ng\u00e0y: B\u1edfi v\u00ec ch\u1ec9 th\u1ef1c h\u00e0nh, tr\u1ebb em m\u1edbi c\u00f3 th\u1ec3 nh\u1edb nh\u1eefng con s\u1ed1 d\u1ec5 nh\u1ea5t v\u00e0 nhanh nh\u1ea5t. \u0110\u1eb7c bi\u1ec7t, khi cha m\u1eb9 \u0111\u1ec3 con c\u00e1i l\u00e0m b\u00e0i t\u1eadp v\u1ec1 nh\u00e0, th\u1ef1c h\u00e0nh m\u1ed7i ng\u00e0y s\u1ebd gi\u00fap tr\u1ebb c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n t\u1ed1t c\u00e1c b\u00e0i t\u1eadp v\u00e0 b\u00e0i ki\u1ec3m tra m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Ch\u01a1i c\u00e1c tr\u00f2 ch\u01a1i v\u1edbi s\u1ed1 18: M\u1ed9t k\u1ef9 thu\u1eadt kh\u00e1c m\u00e0 ph\u1ee5 huynh n\u00ean ch\u00fa \u00fd \u0111\u1ec3 \u00e1p d\u1ee5ng cho vi\u1ec7c h\u1ecdc s\u1ed1 18 \u1edf Rome l\u00e0 d\u1ec5 d\u00e0ng nh\u1ea5t \u0111\u1ec3 con c\u00e1i h\u1ecd ch\u01a1i tr\u00f2 ch\u01a1i v\u1edbi s\u1ed1 18. Vi\u1ec7c h\u1ecdc qua tr\u00f2 ch\u01a1i s\u1ebd gi\u00fap tr\u1ebb quan t\u00e2m h\u01a1n, m\u00e0 kh\u00f4ng c\u1ea3m th\u1ea5y \u00e1p l\u1ef1c khi h\u1ecdc.<\/p>\n<\/li>\n<li dir=\"ltr\">S\u1ed1 h\u1ecdc c\u1ee7a Roman v\u1edbi to\u00e1n h\u1ecdc kh\u1ec9: \u0110\u00e2y l\u00e0 m\u1ed9t \u1ee9ng d\u1ee5ng gi\u1ea3ng d\u1ea1y to\u00e1n h\u1ecdc tr\u1ef1c tuy\u1ebfn cho tr\u1ebb m\u1eabu gi\u00e1o v\u1edbi tr\u01b0\u1eddng ti\u1ec3u h\u1ecdc. N\u1ed9i dung d\u1ef1a tr\u00ean h\u01a1n 60 ch\u1ee7 \u0111\u1ec1 to\u00e1n h\u1ecdc, bao g\u1ed3m s\u1ed1 l\u01b0\u1ee3ng La M\u00e3 v\u00e0 m\u1ed9t lo\u1ea1t ki\u1ebfn \u200b\u200bth\u1ee9c c\u00f3 li\u00ean quan \u0111\u01b0\u1ee3c d\u1ea1y d\u01b0\u1edbi d\u1ea1ng video, ho\u1ea1t h\u00ecnh gi\u00fap tr\u1ebb d\u1ec5 d\u00e0ng h\u1ea5p th\u1ee5. \u0110\u1ed3ng th\u1eddi, k\u1ebft h\u1ee3p v\u1edbi c\u00e1c ph\u01b0\u01a1ng ph\u00e1p gi\u1ea3ng d\u1ea1y th\u00f4ng qua c\u00e1c tr\u00f2 ch\u01a1i v\u00e0 c\u00e1c ho\u1ea1t \u0111\u1ed9ng t\u01b0\u01a1ng t\u00e1c, \u0111i\u1ec1u n\u00e0y gi\u00fap t\u1ea1o ra s\u1ef1 ph\u1ea5n kh\u00edch cho tr\u1ebb h\u1ecdc v\u00e0 c\u00f3 \u0111\u01b0\u1ee3c ki\u1ebfn \u200b\u200bth\u1ee9c nhi\u1ec1u h\u01a1n. Cha m\u1eb9 c\u00f3 th\u1ec3 t\u1ea3i xu\u1ed1ng \u1ee9ng d\u1ee5ng \u0111\u1ec3 tr\u1ea3i nghi\u1ec7m v\u1edbi con c\u00e1i c\u1ee7a h\u1ecd ngay l\u1eadp t\u1ee9c. <\/li>\n<\/ul>\n<p>T\u1ea3i xu\u1ed1ng Shining Home &#8211; Gia \u0111\u00ecnh Anh Ng\u1eef Math mi\u1ec5n ph\u00ed cho \u0111i\u1ec7n tho\u1ea1i Android<\/p>\n<p>T\u1ea3i xu\u1ed1ng Shining Home &#8211; Gia \u0111\u00ecnh Anh Ng\u1eef Math mi\u1ec5n ph\u00ed cho \u0111i\u1ec7n tho\u1ea1i iOS<\/p>\n<p 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>\u0110\u1ec3 \u0111\u01b0\u1ee3c l\u1eddi khuy\u00ean t\u1ed1t nh\u1ea5t, xin vui l\u00f2ng li\u00ean h\u1ec7 v\u1edbi Shining Home &#8211; Gia \u0111\u00ecnh Anh Ng\u1eef qua 1900 63 60 52. Ho\u1eb7c \u0111\u1ec3 l\u1ea1i th\u00f4ng tin ngay t\u1ea1i \u0111\u00e2y \u0111\u1ec3 nh\u1eadn \u0111\u01b0\u1ee3c nhi\u1ec1u \u01b0u \u0111\u00e3i l\u00ean t\u1edbi 40% v\u00e0 h\u00e0ng ng\u00e0n t\u00e0i li\u1ec7u h\u1ecdc t\u1eadp mi\u1ec5n ph\u00ed.<\/p>\n<\/p>\n<p dir=\"ltr\">B\u00e2y gi\u1edd, l\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 cha m\u1eb9 bi\u1ebft c\u00e1ch d\u1ea1y tr\u1ebb h\u1ecdc v\u1ec1 s\u1ed1 18 c\u1ee7a ng\u01b0\u1eddi La M\u00e3? Hy v\u1ecdng r\u1eb1ng \u0111\u00e2y s\u1ebd l\u00e0 ki\u1ebfn \u200b\u200bth\u1ee9c h\u1eefu \u00edch \u0111\u1ec3 gi\u00fap tr\u1ebb hi\u1ec7u qu\u1ea3 nh\u1ea5t.<\/p>\n<p>                                      T\u00e0i li\u1ec7u tham kh\u1ea3o<\/p>\n<p>1. 18 trong S\u1ed1 La M\u00e3 &#8211; Truy c\u1eadp ng\u00e0y 24 th\u00e1ng 6 n\u0103m 2022<\/p>\n<p>https:\/\/byjus.com\/maths\/18-in-roman-numerals\/#:~: v\u0103n b\u1ea3n = 18%20in%20roman%20numerals%20is%20XVIIII.<\/p>\n<p>2. 18 trong S\u1ed1 La M\u00e3 &#8211; Truy c\u1eadp ng\u00e0y 24 th\u00e1ng 6 n\u0103m 2022<\/p>\n<p>https:\/\/www.cuemath.com\/numbers\/18-in-roman-numerals\/<\/p>\n<p>3. S\u1ed1 La M\u00e3: 18 = XVIII &#8211; Truy c\u1eadp ng\u00e0y 24 th\u00e1ng 6 n\u0103m 2022<\/p>\n<p>https:\/\/roman-numerals.info\/18<\/p>\n<p>Ngu\u1ed3n: <a href=\"https:\/\/www.ckconitsha.com\/vn\/\">https:\/\/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>S\u1ed1 18 c\u1ee7a s\u1ed1 La M\u00e3 l\u00e0 m\u1ed9t trong nh\u1eefng con s\u1ed1 c\u01a1 b\u1ea3n trong chu\u1ed7i La M\u00e3. V\u1eady l\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 \u0111\u1ecdc v\u00e0 l\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 vi\u1ebft R\u00f4 -ma 18 th\u00edch? H\u00e3y \u0111\u1ec3 kh\u1ec9 ph\u00e2n t\u00edch chi ti\u1ebft trong b\u00e0i vi\u1ebft sau. Xem t\u1ea5t c\u1ea3 L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 \u0111\u1ecdc s\u1ed1 18&#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-14817","post","type-post","status-publish","format-standard","hentry","category-kien-thuc"],"_links":{"self":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/14817","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=14817"}],"version-history":[{"count":2,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/14817\/revisions"}],"predecessor-version":[{"id":18050,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/14817\/revisions\/18050"}],"wp:attachment":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/media?parent=14817"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/categories?post=14817"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/tags?post=14817"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}