{"id":37982,"date":"2025-08-01T09:11:01","date_gmt":"2025-08-01T02:11:01","guid":{"rendered":"https:\/\/www.ckconitsha.com\/vn\/?p=37982"},"modified":"2025-08-01T23:36:38","modified_gmt":"2025-08-01T16:36:38","slug":"giai-dap-toan-lop-2-1dm-bang-bao-nhieu-cm-cac-dang-ve-don-vi-do","status":"publish","type":"post","link":"https:\/\/www.ckconitsha.com\/vn\/giai-dap-toan-lop-2-1dm-bang-bao-nhieu-cm-cac-dang-ve-don-vi-do\/","title":{"rendered":"[Gi\u1ea3i \u0111\u00e1p] To\u00e1n l\u1edbp 2: 1dm b\u1eb1ng bao nhi\u00eau cm? C\u00e1c d\u1ea1ng v\u1ec1 \u0111\u01a1n v\u1ecb \u0111o!"},"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\/giai-dap-toan-lop-2-1dm-bang-bao-nhieu-cm-cac-dang-ve-don-vi-do\/#Toan_hoc_1dm_cap_2_bang_voi_bao_nhieu_cm\" >To\u00e1n h\u1ecdc 1dm c\u1ea5p 2 b\u1eb1ng v\u1edbi bao nhi\u00eau cm?<\/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\/giai-dap-toan-lop-2-1dm-bang-bao-nhieu-cm-cac-dang-ve-don-vi-do\/#Cac_bieu_mau_toan_hoc_cap_2_lien_quan_den_don_vi_do_luong\" >C\u00e1c bi\u1ec3u m\u1eabu to\u00e1n h\u1ecdc c\u1ea5p 2 li\u00ean quan \u0111\u1ebfn \u0111\u01a1n v\u1ecb \u0111o l\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-3\" href=\"https:\/\/www.ckconitsha.com\/vn\/giai-dap-toan-lop-2-1dm-bang-bao-nhieu-cm-cac-dang-ve-don-vi-do\/#Mau_1_So_sanh_do_dai_cua_cac_phan_doan\" >M\u1eabu 1: So s\u00e1nh \u0111\u1ed9 d\u00e0i c\u1ee7a c\u00e1c ph\u00e2n \u0111o\u1ea1n<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.ckconitsha.com\/vn\/giai-dap-toan-lop-2-1dm-bang-bao-nhieu-cm-cac-dang-ve-don-vi-do\/#Mau_2_Thay_doi_don_vi\" >M\u1eabu 2: Thay \u0111\u1ed5i \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-5\" href=\"https:\/\/www.ckconitsha.com\/vn\/giai-dap-toan-lop-2-1dm-bang-bao-nhieu-cm-cac-dang-ve-don-vi-do\/#Mau_3_Thuc_hien_tinh_toan\" >M\u1eabu 3: Th\u1ef1c hi\u1ec7n t\u00ednh to\u00e1n<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.ckconitsha.com\/vn\/giai-dap-toan-lop-2-1dm-bang-bao-nhieu-cm-cac-dang-ve-don-vi-do\/#Bai_tap_toan_lop_2_Don_vi_Do_luong_DM_cho_tre_thuc_hanh\" >B\u00e0i t\u1eadp to\u00e1n l\u1edbp 2 \u0110\u01a1n v\u1ecb \u0110o l\u01b0\u1eddng DM cho tr\u1ebb 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-7\" href=\"https:\/\/www.ckconitsha.com\/vn\/giai-dap-toan-lop-2-1dm-bang-bao-nhieu-cm-cac-dang-ve-don-vi-do\/#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-8\" href=\"https:\/\/www.ckconitsha.com\/vn\/giai-dap-toan-lop-2-1dm-bang-bao-nhieu-cm-cac-dang-ve-don-vi-do\/#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-9\" href=\"https:\/\/www.ckconitsha.com\/vn\/giai-dap-toan-lop-2-1dm-bang-bao-nhieu-cm-cac-dang-ve-don-vi-do\/#Ba_tap_3\" >B\u00e0 t\u1eadp 3<\/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\/giai-dap-toan-lop-2-1dm-bang-bao-nhieu-cm-cac-dang-ve-don-vi-do\/#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-11\" href=\"https:\/\/www.ckconitsha.com\/vn\/giai-dap-toan-lop-2-1dm-bang-bao-nhieu-cm-cac-dang-ve-don-vi-do\/#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-12\" href=\"https:\/\/www.ckconitsha.com\/vn\/giai-dap-toan-lop-2-1dm-bang-bao-nhieu-cm-cac-dang-ve-don-vi-do\/#Bai_tap_6\" >B\u00e0i t\u1eadp 6<\/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\/giai-dap-toan-lop-2-1dm-bang-bao-nhieu-cm-cac-dang-ve-don-vi-do\/#Bai_tap_7\" >B\u00e0i t\u1eadp 7<\/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\/giai-dap-toan-lop-2-1dm-bang-bao-nhieu-cm-cac-dang-ve-don-vi-do\/#Bai_tap_8\" >B\u00e0i t\u1eadp 8<\/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\/giai-dap-toan-lop-2-1dm-bang-bao-nhieu-cm-cac-dang-ve-don-vi-do\/#Bi_quyet_de_giup_tre_hoc_toan_hoc_o_lop_2_de_chuyen_doi_don_vi_mot_cach_hieu_qua\" >B\u00ed quy\u1ebft \u0111\u1ec3 gi\u00fap tr\u1ebb h\u1ecdc to\u00e1n h\u1ecdc \u1edf l\u1edbp 2 \u0111\u1ec3 chuy\u1ec3n \u0111\u1ed5i \u0111\u01a1n v\u1ecb m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/www.ckconitsha.com\/vn\/giai-dap-toan-lop-2-1dm-bang-bao-nhieu-cm-cac-dang-ve-don-vi-do\/#Giup_be_hieu_kien_thuc_de_thay_doi_don_vi_do_bang_toan_hoc_khi\" >Gi\u00fap b\u00e9 hi\u1ec3u ki\u1ebfn th\u1ee9c \u0111\u1ec3 thay \u0111\u1ed5i \u0111\u01a1n v\u1ecb \u0111o b\u1eb1ng to\u00e1n h\u1ecdc kh\u1ec9!<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/www.ckconitsha.com\/vn\/giai-dap-toan-lop-2-1dm-bang-bao-nhieu-cm-cac-dang-ve-don-vi-do\/#Tre_em_hoc_do_dai_do_don_vi_toan_hoc_voi_cac_vi_du_thuc_te\" >Tr\u1ebb em h\u1ecdc \u0111\u1ed9 d\u00e0i \u0111o \u0111\u01a1n v\u1ecb to\u00e1n h\u1ecdc v\u1edbi c\u00e1c v\u00ed d\u1ee5 th\u1ef1c t\u1ebf<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/www.ckconitsha.com\/vn\/giai-dap-toan-lop-2-1dm-bang-bao-nhieu-cm-cac-dang-ve-don-vi-do\/#Se_mang_den_cho_ban_cac_tro_choi_lien_quan_den_don_vi_do_chieu_dai\" >S\u1ebd mang \u0111\u1ebfn cho b\u1ea1n c\u00e1c tr\u00f2 ch\u01a1i li\u00ean quan \u0111\u1ebfn \u0111\u01a1n v\u1ecb \u0111o chi\u1ec1u d\u00e0i<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/www.ckconitsha.com\/vn\/giai-dap-toan-lop-2-1dm-bang-bao-nhieu-cm-cac-dang-ve-don-vi-do\/#Voi_em_be_cua_ban_lam_bai_tap_ve_nha_moi_ngay\" >V\u1edbi em b\u00e9 c\u1ee7a b\u1ea1n l\u00e0m b\u00e0i t\u1eadp v\u1ec1 nh\u00e0 m\u1ed7i ng\u00e0y<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/www.ckconitsha.com\/vn\/giai-dap-toan-lop-2-1dm-bang-bao-nhieu-cm-cac-dang-ve-don-vi-do\/#Giup_em_be_cua_ban_nam_bat_cac_don_vi_do_chieu_dai\" >Gi\u00fap em b\u00e9 c\u1ee7a b\u1ea1n n\u1eafm b\u1eaft c\u00e1c \u0111\u01a1n v\u1ecb \u0111o chi\u1ec1u d\u00e0i<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<\/p>\n<p>To\u00e1n h\u1ecdc 1dm c\u1ea5p 2 b\u1eb1ng v\u1edbi bao nhi\u00eau cm? \u0110\u00e2y l\u00e0 lo\u1ea1i to\u00e1n h\u1ecdc c\u01a1 b\u1ea3n m\u00e0 tr\u1ebb em s\u1ebd h\u1ecdc. V\u00ec v\u1eady, \u0111\u1ec3 gi\u00fap con b\u1ea1n hi\u1ec3u v\u00e0 tr\u1ea3 l\u1eddi ch\u00ednh x\u00e1c c\u00e2u h\u1ecfi. H\u00e3y \u0111\u1ec3 kh\u1ec9 t\u00ecm hi\u1ec3u th\u00eam trong b\u00e0i vi\u1ebft sau.<\/p>\n<p>                                    <img decoding=\"async\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/image\/600x480_(1).png\"><\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Toan_hoc_1dm_cap_2_bang_voi_bao_nhieu_cm\"><\/span>To\u00e1n h\u1ecdc 1dm c\u1ea5p 2 b\u1eb1ng v\u1edbi bao nhi\u00eau cm?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">DM l\u00e0 m\u1ed9t \u0111\u01a1n v\u1ecb \u0111o l\u01b0\u1eddng \u0111\u1ed9 d\u00e0i r\u1ea5t ph\u1ed5 bi\u1ebfn m\u00e0 tr\u1ebb em s\u1ebd h\u1ecdc trong ch\u01b0\u01a1ng tr\u00ecnh to\u00e1n l\u1edbp 2. Trong \u0111\u00f3, 1dm s\u1ebd l\u00e0 10cm. \u0110\u01a1n v\u1ecb \u0111o \u0111\u1ed9 d\u00e0i DM c\u00f3 t\u00ean \u0111\u1ea7y \u0111\u1ee7 c\u1ee7a \u0111\u1ed1i t\u01b0\u1ee3ng.<\/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-toan-lop-2-1dm-bang-bao-nhieu-cm.jpg\" alt=\"C\u00f3 bao nhi\u00eau cm c\u1ee7a to\u00e1n h\u1ecdc 1dm l\u1edbp 2 b\u1eb1ng v\u1edbi bao nhi\u00eau cm (Ngu\u1ed3n h\u00ecnh \u1ea3nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"100%\"><\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Cac_bieu_mau_toan_hoc_cap_2_lien_quan_den_don_vi_do_luong\"><\/span>C\u00e1c bi\u1ec3u m\u1eabu to\u00e1n h\u1ecdc c\u1ea5p 2 li\u00ean quan \u0111\u1ebfn \u0111\u01a1n v\u1ecb \u0111o l\u01b0\u1eddng<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">V\u1ec1 \u0111\u01a1n v\u1ecb \u0111o chi\u1ec1u d\u00e0i DM, tr\u1ebb em s\u1ebd l\u00e0m quen v\u1edbi nhi\u1ec1u lo\u1ea1i b\u00e0i t\u1eadp kh\u00e1c nhau nh\u01b0:<\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Mau_1_So_sanh_do_dai_cua_cac_phan_doan\"><\/span>M\u1eabu 1: So s\u00e1nh \u0111\u1ed9 d\u00e0i c\u1ee7a c\u00e1c ph\u00e2n \u0111o\u1ea1n<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">\u0110\u00e2y l\u00e0 m\u1ed9t h\u00ecnh th\u1ee9c to\u00e1n h\u1ecdc m\u00e0 tr\u1ebb em s\u1ebd th\u1ef1c h\u00e0nh s\u1eed d\u1ee5ng th\u01b0\u1edbc \u0111o \u0111\u1ec3 \u0111o \u0111\u1ed9 d\u00e0i c\u1ee7a c\u00e1c d\u00f2ng sau \u0111\u00f3 r\u00fat ra k\u1ebft lu\u1eadn v\u1ec1 ph\u00e2n \u0111o\u1ea1n n\u00e0o ng\u1eafn h\u01a1n ho\u1eb7c d\u00f2ng n\u00e0o d\u00e0i 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\/2-toan-lop-2-1dm-bang-bao-nhieu-cm.jpg\" alt=\"C\u00f3 bao nhi\u00eau cm c\u1ee7a to\u00e1n h\u1ecdc 1dm l\u1edbp 2 b\u1eb1ng v\u1edbi bao nhi\u00eau cm (Ngu\u1ed3n h\u00ecnh \u1ea3nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"100%\"><\/p>\n<p dir=\"ltr\"><em>V\u00ed d\u1ee5: \u0111\u01b0a ra 2 ph\u00e2n \u0111o\u1ea1n sau.<\/em><\/p>\n<p dir=\"ltr\"><em>Quan s\u00e1t v\u1edbi m\u1eaft th\u01b0\u1eddng, nh\u1eefng \u0111\u1ee9a tr\u1ebb nh\u00ecn th\u1ea5y ph\u00e2n \u0111o\u1ea1n CD ng\u1eafn h\u01a1n ph\u00e2n \u0111o\u1ea1n EF. S\u1eed d\u1ee5ng th\u01b0\u1edbc \u0111o \u0111o, em b\u00e9 s\u1ebd th\u1ea5y \u0111o\u1ea1n CD c\u00f3 chi\u1ec1u d\u00e0i 4 cm, \u0111o\u1ea1n EF c\u00f3 chi\u1ec1u d\u00e0i 5 cm.<\/em><\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Mau_2_Thay_doi_don_vi\"><\/span>M\u1eabu 2: Thay \u0111\u1ed5i \u0111\u01a1n v\u1ecb<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">Lo\u1ea1i to\u00e1n th\u1ee9 hai m\u00e0 em b\u00e9 s\u1ebd g\u1eb7p nhau trong ch\u01b0\u01a1ng tr\u00ecnh ki\u1ebfn th\u1ee9c to\u00e1n h\u1ecdc l\u1edbp 1DM b\u1eb1ng v\u1edbi s\u1ed1 l\u01b0\u1ee3ng centimet \u0111\u1ec3 thay \u0111\u1ed5i \u0111\u01a1n v\u1ecb. Tr\u1ebb em ch\u1ec9 c\u1ea7n nh\u1edb 1 DM = 10 cm \u0111\u1ec3 c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n h\u00ecnh th\u1ee9c t\u1eadp th\u1ec3 d\u1ee5c.<\/p>\n<p dir=\"ltr\"><em>V\u00ed d\u1ee5: 4dm = 40cm<\/em><\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Mau_3_Thuc_hien_tinh_toan\"><\/span>M\u1eabu 3: Th\u1ef1c hi\u1ec7n t\u00ednh to\u00e1n<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">H\u00ecnh th\u1ee9c to\u00e1n h\u1ecdc ti\u1ebfp theo s\u1ebd l\u00e0m quen v\u1edbi ch\u01b0\u01a1ng tr\u00ecnh to\u00e1n l\u1edbp 2 l\u00e0 t\u00ednh to\u00e1n. Trong v\u1ea5n \u0111\u1ec1, \u0111\u00f4i khi c\u00e1c t\u00ednh to\u00e1n s\u1ebd kh\u00f4ng \u0111\u01b0\u1ee3c th\u1ed1ng nh\u1ea5t trong c\u00f9ng m\u1ed9t \u0111\u01a1n v\u1ecb.<\/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-toan-lop-2-1dm-bang-bao-nhieu-cm.jpg\" alt=\"Tr\u1ebb em h\u1ecdc to\u00e1n \u0111\u1ec3 th\u1ef1c hi\u1ec7n c\u00e1c t\u00ednh to\u00e1n li\u00ean quan \u0111\u1ebfn \u0111\u01a1n v\u1ecb \u0111\u1ed9 d\u00e0i \u0111o (Ngu\u1ed3n h\u00ecnh \u1ea3nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"100%\"><\/p>\n<p dir=\"ltr\">V\u00ec v\u1eady, khi th\u1ef1c hi\u1ec7n b\u00e0i t\u1eadp n\u00e0y, tr\u1ebb em s\u1ebd ti\u1ebfn h\u00e0nh thay \u0111\u1ed5i c\u00e1c \u0111\u01a1n v\u1ecb th\u00e0nh m\u1ed9t \u0111\u01a1n v\u1ecb th\u1ed1ng nh\u1ea5t v\u00e0 sau \u0111\u00f3 th\u1ef1c hi\u1ec7n t\u00ednh to\u00e1n.<\/p>\n<p dir=\"ltr\"><em>V\u00ed d\u1ee5: 10dm &#8211; 3cm = 100cm &#8211; 3cm = 97cm.<\/em><\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Bai_tap_toan_lop_2_Don_vi_Do_luong_DM_cho_tre_thuc_hanh\"><\/span>B\u00e0i t\u1eadp to\u00e1n l\u1edbp 2 \u0110\u01a1n v\u1ecb \u0110o l\u01b0\u1eddng DM cho tr\u1ebb 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 to\u00e1n l\u1edbp 2 cho tr\u1ebb th\u1ef1c h\u00e0nh 1dm m\u1ed9t c\u00e1ch nh\u01b0 bao nhi\u00eau cm:<\/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\">D\u00f2ng n\u00e0o d\u00e0i h\u01a1n d\u00f2ng<\/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-toan-lop-2-1dm-bang-bao-nhieu-cm.jpg\" alt=\"So s\u00e1nh hai ph\u00e2n \u0111o\u1ea1n (Ngu\u1ed3n h\u00ecnh \u1ea3nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"100%\"><\/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\">Thay \u0111\u1ed5i c\u00e1c \u0111\u01a1n v\u1ecb sau:<\/p>\n<ol>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">3 dm = &#8230; cm<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">16 dm = &#8230; cm<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">35 dm = &#8230; cm<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">21 dm = &#8230; cm<\/p>\n<\/li>\n<\/ol>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Ba_tap_3\"><\/span>B\u00e0 t\u1eadp 3<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">Th\u1ef1c hi\u1ec7n c\u00e1c t\u00ednh to\u00e1n sau:<\/p>\n<ol>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">50 dm &#8211; 36 dm<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">50 dm + 6 dm<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">78 DM &#8211; 62 DM<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">150 DM &#8211; 36 DM<\/p>\n<\/li>\n<\/ol>\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\">So s\u00e1nh hai \u0111\u01b0\u1eddng th\u1eb3ng sau<\/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-toan-lop-2-1dm-bang-bao-nhieu-cm.jpg\" alt=\"D\u00f2ng n\u00e0o d\u00e0i h\u01a1n? (Ngu\u1ed3n h\u00ecnh \u1ea3nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"100%\"><\/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\">Thay \u0111\u1ed5i c\u00e1c \u0111\u01a1n v\u1ecb sau<\/p>\n<ol>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">30 cm = &#8230; DM<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">150 cm = &#8230; DM<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">60 cm = &#8230; DM<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">130 cm = &#8230; DM<\/p>\n<\/li>\n<\/ol>\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\">Th\u1ef1c hi\u1ec7n c\u00e1c t\u00ednh to\u00e1n sau<\/p>\n<ol>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">1 DM + 40 cm<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">45 cm &#8211; 3 dm<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">18 DM + 20 cm<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">55 cm &#8211; 5 dm<\/p>\n<\/li>\n<\/ol>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Bai_tap_7\"><\/span>B\u00e0i t\u1eadp 7<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">D\u00f2ng sau l\u00e0 bao l\u00e2u?<\/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\/6-toan-lop-2-1dm-bang-bao-nhieu-cm.jpg\" alt=\"Bi\u1ec7n ph\u00e1p \u0111o \u0111\u1ed9 d\u00e0i th\u1ef1c h\u00e0nh c\u1ee7a tr\u1ebb s\u01a1 sinh (Ngu\u1ed3n: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"100%\"><\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Bai_tap_8\"><\/span>B\u00e0i t\u1eadp 8<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">Chuy\u1ec3n \u0111\u1ed5i c\u00e1c \u0111\u01a1n v\u1ecb sau<\/p>\n<ol>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">1 dm 8cm = &#8230; cm<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">5 dm 7 cm = &#8230; cm<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">15 dm 9 cm = &#8230; cm<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">3 dm 3 cm = &#8230; cm<\/p>\n<\/li>\n<\/ol>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Bi_quyet_de_giup_tre_hoc_toan_hoc_o_lop_2_de_chuyen_doi_don_vi_mot_cach_hieu_qua\"><\/span>B\u00ed quy\u1ebft \u0111\u1ec3 gi\u00fap tr\u1ebb h\u1ecdc to\u00e1n h\u1ecdc \u1edf l\u1edbp 2 \u0111\u1ec3 chuy\u1ec3n \u0111\u1ed5i \u0111\u01a1n v\u1ecb m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">Ph\u1ee5 huynh mu\u1ed1n cho con c\u00e1i c\u1ee7a h\u1ecd trong to\u00e1n h\u1ecdc l\u1edbp 2 li\u00ean quan \u0111\u1ebfn 1dM b\u1eb1ng v\u1edbi s\u1ed1 l\u01b0\u1ee3ng ch\u00fang ta ph\u1ea3i trang b\u1ecb m\u1ed9t v\u00e0i b\u00ed m\u1eadt. B\u1edfi v\u00ec vi\u1ec7c chuy\u1ec3n \u0111\u1ed5i c\u1ee7a \u0111\u01a1n v\u1ecb \u0111\u00f4i khi s\u1ebd khi\u1ebfn tr\u1ebb c\u1ea3m th\u1ea5y kh\u00e1 b\u1ed1i r\u1ed1i v\u00e0 kh\u00f4ng cho k\u1ebft qu\u1ea3 th\u00edch h\u1ee3p. Nh\u1eefng quy\u1ebft \u0111\u1ecbnh \u0111\u00f3 l\u00e0:<\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Giup_be_hieu_kien_thuc_de_thay_doi_don_vi_do_bang_toan_hoc_khi\"><\/span>Gi\u00fap b\u00e9 hi\u1ec3u ki\u1ebfn th\u1ee9c \u0111\u1ec3 thay \u0111\u1ed5i \u0111\u01a1n v\u1ecb \u0111o b\u1eb1ng to\u00e1n h\u1ecdc kh\u1ec9!<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p class=\"\" data-start=\"80\" data-end=\"331\">Thay v\u00ec ch\u1ec9 ghi nh\u1edb &#8220;1dm v\u1edbi bao nhi\u00eau cm?&#8221;, Tr\u1ebb em s\u1ebd th\u1ef1c s\u1ef1 hi\u1ec3u v\u00e0 \u00e1p d\u1ee5ng linh ho\u1ea1t ki\u1ebfn th\u1ee9c v\u1ec1 vi\u1ec7c trao \u0111\u1ed5i c\u00e1c \u0111\u01a1n v\u1ecb \u0111o l\u01b0\u1eddng th\u00f4ng qua c\u00e1c ph\u01b0\u01a1ng ph\u00e1p h\u1ecdc t\u1eadp hi\u1ec7n \u0111\u1ea1i v\u00e0 tr\u1ef1c quan trong to\u00e1n h\u1ecdc kh\u1ec9 &#8211; \u1ee9ng d\u1ee5ng to\u00e1n h\u1ecdc ti\u1ebfng Anh cho tr\u1ebb em t\u1eeb 3 \u0111\u1ebfn 8 tu\u1ed5i.<\/p>\n<p class=\"\" data-start=\"333\" data-end=\"624\">Shining Home &#8211; Gia \u0111\u00ecnh Anh Ng\u1eef Math \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 theo s\u00e1t ch\u01b0\u01a1ng tr\u00ecnh gi\u00e1o d\u1ee5c m\u1edbi, cung c\u1ea5p h\u01a1n 400 b\u00e0i h\u1ecdc v\u00e0 h\u01a1n 10.000 ho\u1ea1t \u0111\u1ed9ng t\u01b0\u01a1ng t\u00e1c, bao g\u1ed3m m\u1ed9t h\u1ec7 th\u1ed1ng \u0111o l\u01b0\u1eddng chuy\u00ean ng\u00e0nh, gi\u00fap tr\u1ebb em quen v\u00e0 th\u00e0nh th\u1ea1o c\u00e1c \u0111\u01a1n v\u1ecb \u0111\u1ed9 d\u00e0i, di\u1ec7n t\u00edch, th\u1eddi gian &#8230; tr\u1ef1c quan v\u00e0 d\u1ec5 nh\u1edb.<\/p>\n<p class=\"\" style=\"text-align: center\" data-start=\"333\" data-end=\"624\"><a href=\"https:\/\/www.youtube.com\/watch?v=7DSJPVHFROS\" target=\"_blank\" rel=\"noopener\">https:\/\/www.youtube.com\/watch?v=7DSJPVHFROS<\/a><\/p>\n<p class=\"\" data-start=\"626\" data-end=\"656\">Shining Home &#8211; Gia \u0111\u00ecnh Anh Ng\u1eef Math n\u1ed5i b\u1eadt v\u1edbi:<\/p>\n<ul data-start=\"657\" data-end=\"968\">\n<li class=\"\" data-start=\"657\" data-end=\"742\">\n<p class=\"\" data-start=\"659\" data-end=\"742\">B\u00e0i h\u1ecdc \u0111\u01b0\u1ee3c chia t\u1eeb d\u1ec5 d\u00e0ng \u0111\u1ebfn kh\u00f3 kh\u0103n, ph\u00f9 h\u1ee3p cho kh\u1ea3 n\u0103ng h\u1ecdc to\u00e1n c\u1ee7a m\u1ed7i em b\u00e9<\/p>\n<\/li>\n<li class=\"\" data-start=\"743\" data-end=\"824\">\n<p class=\"\" data-start=\"745\" data-end=\"824\">C\u00e1c ho\u1ea1t \u0111\u1ed9ng h\u1ecdc t\u1eadp \u0111a d\u1ea1ng: Video ho\u1ea1t h\u00ecnh, b\u00e0i t\u1eadp t\u01b0\u01a1ng t\u00e1c, tr\u00f2 ch\u01a1i s\u1ed1ng \u0111\u1ed9ng<\/p>\n<\/li>\n<li class=\"\" data-start=\"825\" data-end=\"918\">\n<p class=\"\" data-start=\"827\" data-end=\"918\">N\u1ed9i dung ho\u00e0n to\u00e0n b\u1eb1ng ti\u1ebfng Anh \u0111\u1ec3 gi\u00fap tr\u1ebb ph\u00e1t tri\u1ec3n t\u01b0 duy to\u00e1n h\u1ecdc v\u00e0 ng\u00f4n ng\u1eef c\u00f9ng m\u1ed9t l\u00fac<\/p>\n<\/li>\n<li class=\"\" data-start=\"919\" data-end=\"968\">\n<p class=\"\" data-start=\"921\" data-end=\"968\">Kh\u00f4ng c\u1ea7n internet &#8211; h\u1ecdc m\u1ecdi l\u00fac, m\u1ecdi n\u01a1i<\/p>\n<\/li>\n<\/ul>\n<p class=\"\" data-start=\"970\" data-end=\"1080\"><em>H\u00e3y \u0111\u1ec3 Shining Home &#8211; Gia \u0111\u00ecnh Anh Ng\u1eef Math \u0111i c\u00f9ng em b\u00e9 c\u1ee7a b\u1ea1n trong h\u00e0nh tr\u00ecnh chinh ph\u1ee5c to\u00e1n h\u1ecdc l\u1edbp 2 theo c\u00e1ch t\u1ef1 tin v\u00e0 th\u00fa v\u1ecb!<\/em><\/p>\n<p class=\"\" style=\"text-align: center\" data-start=\"1082\" data-end=\"1149\">T\u1ea3i xu\u1ed1ng Shining Home &#8211; Gia \u0111\u00ecnh Anh Ng\u1eef Math ngay b\u00e2y gi\u1edd cho b\u1ea1n y\u00eau th\u00edch v\u00e0 to\u00e1n h\u1ecdc t\u1ed1t h\u01a1n m\u1ed7i ng\u00e0y!<\/p>\n<p class=\"\" data-start=\"1082\" data-end=\"1149\"><img decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/storage_web\/12-12-2022_01:16:45_monkey-math.jpg\" alt=\"Shining Home - Gia \u0111\u00ecnh Anh Ng\u1eef Math - \u1ee8ng d\u1ee5ng h\u1ecdc to\u00e1n b\u1eb1ng ti\u1ebfng Anh. (\u1ea2nh: Kh\u1ec9)\" width=\"100%\"><\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Tre_em_hoc_do_dai_do_don_vi_toan_hoc_voi_cac_vi_du_thuc_te\"><\/span>Tr\u1ebb em h\u1ecdc \u0111\u1ed9 d\u00e0i \u0111o \u0111\u01a1n v\u1ecb to\u00e1n h\u1ecdc v\u1edbi c\u00e1c v\u00ed d\u1ee5 th\u1ef1c t\u1ebf<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">N\u00f3 th\u1ef1c s\u1ef1 l\u00e0 m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3 \u0111\u1ec3 h\u1ecdc to\u00e1n v\u1edbi m\u1ed9t \u0111\u01a1n v\u1ecb \u0111o l\u01b0\u1eddng th\u00f4ng qua c\u00e1c v\u00ed d\u1ee5 th\u1ef1c t\u1ebf. B\u1edfi v\u00ec khi tr\u1ebb em tr\u1ef1c ti\u1ebfp h\u1ecdc c\u00e1c v\u00ed d\u1ee5 th\u1ef1c t\u1ebf, ch\u00fang s\u1ebd th\u1ea5y r\u1eb1ng c\u00e1c \u0111\u01a1n v\u1ecb \u0111o \u0111\u1ed9 d\u00e0i r\u1ea5t d\u1ec5 hi\u1ec3u.<\/p>\n<p dir=\"ltr\">Ph\u1ee5 huynh c\u00f3 th\u1ec3 tr\u1ef1c ti\u1ebfp s\u1eed d\u1ee5ng ng\u01b0\u1eddi cai tr\u1ecb \u0111\u1ed9 d\u00e0i DM cho tr\u1ebb em \u0111\u1ec3 th\u1ef1c h\u00e0nh \u0111o \u0111\u1ed9 d\u00e0i c\u1ee7a b\u00e0n, \u0111o c\u00e1c v\u1eadt d\u1ee5ng gia \u0111\u00ecnh, &#8230; Ph\u01b0\u01a1ng ph\u00e1p gi\u1ea3ng d\u1ea1y n\u00e0y gi\u00fap ch\u00fang c\u1ea3m th\u1ea5y ph\u1ea5n kh\u00edch v\u00e0 mang l\u1ea1i hi\u1ec7u qu\u1ea3 cao h\u01a1n cho tr\u1ebb khi h\u1ecdc.<\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Se_mang_den_cho_ban_cac_tro_choi_lien_quan_den_don_vi_do_chieu_dai\"><\/span>S\u1ebd mang \u0111\u1ebfn cho b\u1ea1n c\u00e1c tr\u00f2 ch\u01a1i li\u00ean quan \u0111\u1ebfn \u0111\u01a1n v\u1ecb \u0111o chi\u1ec1u d\u00e0i<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">H\u1ecdc t\u1eadp v\u00e0 ch\u01a1i lu\u00f4n l\u00e0 m\u1ed9t trong nh\u1eefng ph\u01b0\u01a1ng ph\u00e1p h\u1ecdc t\u1eadp r\u1ea5t t\u00edch c\u1ef1c. V\u00e0 \u0111\u1eb7c bi\u1ec7t l\u00e0 khi d\u1ea1y tr\u1ebb h\u1ecdc v\u1edbi \u0111\u01a1n v\u1ecb chi\u1ec1u d\u00e0i, cha m\u1eb9 c\u0169ng n\u00ean t\u00edch h\u1ee3p c\u00e1c tr\u00f2 ch\u01a1i trong \u0111\u00f3 \u0111\u1ec3 con c\u00e1i h\u1ecd c\u1ea3m th\u1ea5y th\u00edch th\u00fa 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\/8-toan-lop-2-1dm-bang-bao-nhieu-cm.jpg\" alt=\"Cha m\u1eb9 n\u00ean \u0111\u1ec3 con c\u00e1i tham gia v\u00e0o c\u00e1c tr\u00f2 ch\u01a1i li\u00ean quan \u0111\u1ebfn \u0111\u01a1n v\u1ecb \u0111o \u0111\u1ed9 d\u00e0i (Ngu\u1ed3n: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"100%\"><\/p>\n<p dir=\"ltr\">V\u00ed d\u1ee5, ph\u1ee5 huynh c\u00f3 th\u1ec3 \u0111\u1ec3 h\u1ecd ch\u01a1i m\u1ed9t tr\u00f2 ch\u01a1i r\u00fat th\u0103m may m\u1eafn v\u1edbi c\u00e1c c\u00e2u h\u1ecfi xung quanh c\u00e1c lo\u1ea1i b\u00e0i t\u1eadp theo chi\u1ec1u d\u00e0i.<\/p>\n<p dir=\"ltr\">Khi tr\u1ebb nh\u1eadn \u0111\u01b0\u1ee3c b\u1ea5t k\u1ef3 c\u00e2u h\u1ecfi n\u00e0o, ch\u00fang s\u1ebd th\u1ef1c h\u00e0nh tr\u1ea3 l\u1eddi v\u00e0 khi ch\u00fang tr\u1ea3 l\u1eddi ch\u00ednh x\u00e1c, ch\u00fang s\u1ebd c\u00f3 ph\u1ea7n th\u01b0\u1edfng. M\u00f3n qu\u00e0 s\u1ebd khuy\u1ebfn kh\u00edch tinh th\u1ea7n c\u1ee7a tr\u1ebb em l\u00e0m cho ch\u00fang th\u00edch h\u1ecdc h\u01a1n.<\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Voi_em_be_cua_ban_lam_bai_tap_ve_nha_moi_ngay\"><\/span>V\u1edbi em b\u00e9 c\u1ee7a b\u1ea1n l\u00e0m b\u00e0i t\u1eadp v\u1ec1 nh\u00e0 m\u1ed7i ng\u00e0y<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">B\u00e0i t\u1eadp h\u00e0ng ng\u00e0y s\u1ebd l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p gi\u00fap tr\u1ebb h\u1ecdc to\u00e1n 21dm trong 1dM v\u1edbi hi\u1ec7u qu\u1ea3 h\u01a1n. B\u1edfi v\u00ec \u0111\u00f4i khi tr\u1ebb em m\u1ea5t nhi\u1ec1u th\u1eddi gian \u0111\u1ec3 th\u1ef1c hi\u1ec7n c\u00e1c b\u00e0i t\u1eadp li\u00ean quan \u0111\u1ebfn vi\u1ec7c thay \u0111\u1ed5i c\u00e1c \u0111\u01a1n v\u1ecb theo chi\u1ec1u d\u00e0i, ch\u00fang c\u00f3 th\u1ec3 thay \u0111\u1ed5i \u0111\u01a1n v\u1ecb.<\/p>\n<p dir=\"ltr\">Tuy nhi\u00ean, n\u1ebfu tr\u1ebb th\u1ef1c h\u00e0nh m\u1ed7i ng\u00e0y, ch\u00fang s\u1ebd nh\u1edb c\u00e1ch th\u1ef1c hi\u1ec7n c\u00e1c b\u00e0i t\u1eadp nh\u01b0 v\u1eady. K\u1ec3 t\u1eeb \u0111\u00f3, b\u1ecdn tr\u1ebb s\u1ebd trang b\u1ecb cho m\u00ecnh nh\u1eefng ki\u1ebfn th\u1ee9c nh\u1ea5t \u0111\u1ecbnh h\u01a1n \u0111\u1ec3 t\u1ea1o n\u1ec1n t\u1ea3ng \u0111\u1ec3 ti\u1ebfp thu ki\u1ebfn th\u1ee9c kh\u00e1c.<\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Giup_em_be_cua_ban_nam_bat_cac_don_vi_do_chieu_dai\"><\/span>Gi\u00fap em b\u00e9 c\u1ee7a b\u1ea1n n\u1eafm b\u1eaft c\u00e1c \u0111\u01a1n v\u1ecb \u0111o chi\u1ec1u d\u00e0i<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">DM ho\u1eb7c CM c\u0169ng l\u00e0 \u0111\u01a1n v\u1ecb \u0111o chi\u1ec1u d\u00e0i. Do \u0111\u00f3, \u0111\u1ec3 gi\u00fap tr\u1ebb em c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n c\u00e1c b\u00e0i t\u1eadp m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3, cha m\u1eb9 c\u1ea7n gi\u00fap con c\u00e1i n\u1eafm b\u1eaft c\u00e1c \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\/7-toan-lop-2-1dm-bang-bao-nhieu-cm.jpg\" alt=\"Cha m\u1eb9 gi\u00fap con c\u00e1i n\u1eafm v\u1eefng ki\u1ebfn th\u1ee9c li\u00ean quan \u0111\u1ebfn \u0111\u01a1n v\u1ecb \u0111o \u0111\u1ed9 d\u00e0i (ngu\u1ed3n c\u1ee7a h\u00ecnh \u1ea3nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"100%\"><\/p>\n<p dir=\"ltr\">Khi tr\u1ebb em \u0111\u00e3 n\u1eafm v\u1eefng \u0111\u01a1n v\u1ecb \u0111o \u0111\u1ed9 d\u00e0i c\u1ee7a DM v\u00e0 CM, c\u00e1c b\u00e0i t\u1eadp li\u00ean quan \u0111\u1ebfn vi\u1ec7c chuy\u1ec3n \u0111\u1ed5i r\u1ea5t \u0111\u01a1n gi\u1ea3n. Tr\u1ebb em ch\u1ec9 c\u1ea7n \u00e1p d\u1ee5ng ki\u1ebfn th\u1ee9c m\u00e0 ch\u00fang c\u00f3 \u0111\u01b0\u1ee3c v\u00e0 sau \u0111\u00f3 ti\u1ebfn h\u00e0nh chuy\u1ec3n \u0111\u1ed5i \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n.<\/p>\n<p dir=\"ltr\">Xem th\u00eam: T\u00f3m t\u1eaft h\u01a1n 50 b\u00e0i t\u1eadp to\u00e1n l\u1edbp 2 n\u00e2ng cao v\u1edbi c\u00e1c gi\u1ea3i ph\u00e1p hi\u1ec7u qu\u1ea3 cho em b\u00e9<\/p>\n<\/p>\n<p dir=\"ltr\">G\u1ea7n \u0111\u00e2y, Shining Home &#8211; Gia \u0111\u00ecnh Anh Ng\u1eef chia s\u1ebb chi ti\u1ebft cho ph\u1ee5 huynh v\u00e0 con c\u00e1i c\u1ee7a Ch\u01b0\u01a1ng tr\u00ecnh Ki\u1ebfn th\u1ee9c To\u00e1n h\u1ecdc 2 1DM. Hy v\u1ecdng r\u1eb1ng th\u00f4ng tin chia s\u1ebb n\u00e0y s\u1ebd gi\u00fap b\u1ea1n quan t\u00e2m nhi\u1ec1u h\u01a1n \u0111\u1ebfn ch\u01b0\u01a1ng tr\u00ecnh ki\u1ebfn th\u1ee9c to\u00e1n h\u1ecdc.<\/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>To\u00e1n h\u1ecdc 1dm c\u1ea5p 2 b\u1eb1ng v\u1edbi bao nhi\u00eau cm? \u0110\u00e2y l\u00e0 lo\u1ea1i to\u00e1n h\u1ecdc c\u01a1 b\u1ea3n m\u00e0 tr\u1ebb em s\u1ebd h\u1ecdc. V\u00ec v\u1eady, \u0111\u1ec3 gi\u00fap con b\u1ea1n hi\u1ec3u v\u00e0 tr\u1ea3 l\u1eddi ch\u00ednh x\u00e1c c\u00e2u h\u1ecfi. H\u00e3y \u0111\u1ec3 kh\u1ec9 t\u00ecm hi\u1ec3u th\u00eam trong b\u00e0i vi\u1ebft sau. To\u00e1n h\u1ecdc 1dm c\u1ea5p 2 b\u1eb1ng v\u1edbi bao nhi\u00eau&#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-37982","post","type-post","status-publish","format-standard","hentry","category-kien-thuc"],"_links":{"self":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/37982","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=37982"}],"version-history":[{"count":2,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/37982\/revisions"}],"predecessor-version":[{"id":38187,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/37982\/revisions\/38187"}],"wp:attachment":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/media?parent=37982"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/categories?post=37982"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/tags?post=37982"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}