{"id":4787,"date":"2020-04-23T11:42:26","date_gmt":"2020-04-23T04:42:26","guid":{"rendered":"https:\/\/bacdau.vn\/?post_type=kb&p=4787"},"modified":"2023-08-14T16:52:45","modified_gmt":"2023-08-14T09:52:45","slug":"nhan-chia-truoc-cong-tru-sau","status":"publish","type":"kb","link":"https:\/\/bacdau.vn\/kb\/nhan-chia-truoc-cong-tru-sau\/","title":{"rendered":"Nh\u00e2n chia tr\u01b0\u1edbc c\u1ed9ng tr\u1eeb sau – C\u00f4ng th\u1ee9c to\u00e1n h\u1ecdc"},"content":{"rendered":"
C\u00e1c ph\u00e9p to\u00e1n c\u1ed9ng, tr\u1eeb, nh\u00e2n v\u00e0 chia l\u00e0 nh\u1eefng ki\u1ebfn th\u1ee9c c\u01a1 b\u1ea3n m\u00e0 b\u1ea5t c\u1ee9 ai c\u0169ng c\u1ea7n ph\u1ea3i n\u1eafm v\u1eefng, ngay t\u1eeb khi c\u00f2n nh\u1ecf. Tuy nhi\u00ean, kh\u00f4ng \u00edt ng\u01b0\u1eddi v\u1eabn c\u00f2n l\u00fang t\u00fang v\u1edbi vi\u1ec7c nh\u00e2n chia tr\u01b0\u1edbc, c\u1ed9ng tr\u1eeb sau<\/strong>. V\u1eady quy t\u1eafc n\u00e0y c\u00f3 \u0111\u00fang kh\u00f4ng?<\/p>\n C\u1ed9ng, tr\u1eeb, nh\u00e2n v\u00e0 chia l\u00e0 b\u1ed1n ph\u00e9p to\u00e1n c\u01a1 b\u1ea3n trong to\u00e1n h\u1ecdc. Ch\u00fang \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 t\u00ednh to\u00e1n s\u1ed1 l\u01b0\u1ee3ng, kh\u1ed1i l\u01b0\u1ee3ng, di\u1ec7n t\u00edch, th\u1ec3 t\u00edch, th\u1eddi gian, t\u1ed1c \u0111\u1ed9, v.v.<\/p>\n C\u1ed9ng l\u00e0 ph\u00e9p to\u00e1n th\u00eam hai ho\u1eb7c nhi\u1ec1u s\u1ed1 l\u1ea1i v\u1edbi nhau. Tr\u1eeb l\u00e0 ph\u00e9p to\u00e1n l\u1ea5y m\u1ed9t s\u1ed1 ra kh\u1ecfi m\u1ed9t s\u1ed1 kh\u00e1c. Nh\u00e2n l\u00e0 ph\u00e9p to\u00e1n nh\u00e2n hai ho\u1eb7c nhi\u1ec1u s\u1ed1 l\u1ea1i v\u1edbi nhau. Chia l\u00e0 ph\u00e9p to\u00e1n l\u1ea5y m\u1ed9t s\u1ed1 chia cho m\u1ed9t s\u1ed1 kh\u00e1c.<\/p>\n C\u00e1c ph\u00e9p to\u00e1n c\u1ed9ng, tr\u1eeb, nh\u00e2n v\u00e0 chia \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng d\u1ef1a tr\u00ean c\u00e1c kh\u00e1i ni\u1ec7m v\u1ec1 s\u1ed1, s\u1ed1 t\u1ef1 nhi\u00ean, s\u1ed1 nguy\u00ean, s\u1ed1 h\u1eefu t\u1ec9, s\u1ed1 th\u1ef1c v\u00e0 s\u1ed1 ph\u1ee9c. C\u00e1c ph\u00e9p to\u00e1n n\u00e0y \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 gi\u1ea3i c\u00e1c b\u00e0i to\u00e1n trong nhi\u1ec1u l\u0129nh v\u1ef1c kh\u00e1c nhau, bao g\u1ed3m to\u00e1n h\u1ecdc, khoa h\u1ecdc, kinh t\u1ebf, k\u1ef9 thu\u1eadt, v.v.<\/p>\n C\u00e1c ph\u00e9p to\u00e1n c\u1ed9ng, tr\u1eeb, nh\u00e2n v\u00e0 chia \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng t\u1eeb r\u1ea5t l\u00e2u \u0111\u1eddi. Ng\u01b0\u1eddi ta tin r\u1eb1ng c\u00e1c ph\u00e9p to\u00e1n n\u00e0y \u0111\u00e3 \u0111\u01b0\u1ee3c ph\u00e1t minh ra \u1edf \u1ea4n \u0110\u1ed9 v\u00e0 Hy L\u1ea1p c\u1ed5 \u0111\u1ea1i. Ban \u0111\u1ea7u, c\u00e1c ph\u00e9p to\u00e1n n\u00e0y \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1eb1ng ch\u1eef c\u00e1i. Sau \u0111\u00f3, v\u00e0o th\u1ebf k\u1ef7 17, nh\u00e0 to\u00e1n h\u1ecdc ng\u01b0\u1eddi Ph\u00e1p Fran\u00e7ois Vi\u00e8te \u0111\u00e3 \u0111\u1ec1 xu\u1ea5t s\u1eed d\u1ee5ng c\u00e1c k\u00fd hi\u1ec7u +, -, \u00d7 v\u00e0 : \u0111\u1ec3 bi\u1ec3u di\u1ec5n c\u00e1c ph\u00e9p to\u00e1n n\u00e0y. S\u1ef1 ra \u0111\u1eddi c\u1ee7a c\u00e1c k\u00fd hi\u1ec7u n\u00e0y \u0111\u00e3 gi\u00fap cho vi\u1ec7c t\u00ednh to\u00e1n tr\u1edf n\u00ean d\u1ec5 d\u00e0ng v\u00e0 thu\u1eadn ti\u1ec7n h\u01a1n.<\/p>\n Ng\u00e0y nay, c\u00e1c ph\u00e9p to\u00e1n c\u1ed9ng, tr\u1eeb, nh\u00e2n v\u00e0 chia \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong m\u1ecdi l\u0129nh v\u1ef1c c\u1ee7a \u0111\u1eddi s\u1ed1ng. Ch\u00fang l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 quan tr\u1ecdng gi\u00fap ch\u00fang ta gi\u1ea3i quy\u1ebft c\u00e1c v\u1ea5n \u0111\u1ec1 trong h\u1ecdc t\u1eadp, c\u00f4ng vi\u1ec7c v\u00e0 cu\u1ed9c s\u1ed1ng.<\/p>\n<\/div>\n H\u1ea7u h\u1ebft \u0111\u1ed1i v\u1edbi h\u1ecdc sinh b\u1eadc ti\u1ec3u h\u1ecdc n\u1ebfu ch\u1ec9 th\u1ef1c hi\u1ec7n ph\u00e9p c\u1ed9ng tr\u1eeb nh\u00e2n chia<\/strong> c\u01a1 b\u1ea3n th\u00ec c\u1ef1c k\u1ef3 \u0111\u01a1n gi\u1ea3n, gi\u00e1o vi\u00ean v\u00e0 ph\u1ee5 huynh ch\u1ec9 c\u1ea7n ki\u00ean nh\u1eabn th\u00ec b\u00e9 s\u1ebd ho\u00e0n th\u00e0nh t\u1ed1t. Tuy nhi\u00ean khi ph\u1ed1i h\u1ee3p c\u00e1c ph\u00e9p to\u00e1n v\u1edbi nhau th\u00ec c\u00e2u chuy\u1ec7n thay \u0111\u1ed5i, kh\u00f4ng n\u1eafm \u0111\u01b0\u1ee3c c\u00e1c quy t\u1eafc c\u01a1 b\u1ea3n n\u00e0y s\u1ebd l\u00e0m tr\u1ebb l\u00fang t\u00fang, nh\u1ea7m l\u1eabn. V\u1eady quy t\u1eafc c\u01a1 b\u1ea3n trong t\u00ednh to\u00e1n l\u00e0 g\u00ec?<\/p>\n C\u00e1c quy t\u1eafc c\u01a1 b\u1ea3n trong t\u00ednh to\u00e1n l\u00e0:<\/p>\n Ngo\u00e0i ra, c\u00f2n c\u00f3 m\u1ed9t s\u1ed1 quy t\u1eafc kh\u00e1c nh\u01b0:<\/p>\n C\u00e1c quy t\u1eafc c\u01a1 b\u1ea3n trong t\u00ednh to\u00e1n l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi h\u1ecdc sinh ti\u1ec3u h\u1ecdc. Ch\u00fang gi\u00fap h\u1ecdc sinh h\u1ecdc c\u00e1ch t\u00ednh to\u00e1n c\u00e1c s\u1ed1 v\u00e0 gi\u1ea3i c\u00e1c b\u00e0i to\u00e1n \u0111\u01a1n gi\u1ea3n. Khi h\u1ecdc sinh n\u1eafm v\u1eefng c\u00e1c quy t\u1eafc n\u00e0y, h\u1ecd s\u1ebd c\u00f3 th\u1ec3 ti\u1ebfp t\u1ee5c h\u1ecdc c\u00e1c ki\u1ebfn th\u1ee9c to\u00e1n h\u1ecdc cao h\u01a1n m\u1ed9t c\u00e1ch d\u1ec5 d\u00e0ng h\u01a1n.<\/p>\n D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 v\u00ed d\u1ee5 v\u1ec1 c\u00e1ch s\u1eed d\u1ee5ng c\u00e1c quy t\u1eafc c\u01a1 b\u1ea3n trong t\u00ednh to\u00e1n:<\/p>\n “Nh\u00e2n chia tr\u01b0\u1edbc, c\u1ed9ng tr\u1eeb sau<\/strong>” l\u00e0 m\u1ed9t quy t\u1eafc quan tr\u1ecdng trong to\u00e1n h\u1ecdc. N\u00f3 gi\u00fap ch\u00fang ta th\u1ef1c hi\u1ec7n c\u00e1c ph\u00e9p t\u00ednh m\u1ed9t c\u00e1ch ch\u00ednh x\u00e1c v\u00e0 nhanh ch\u00f3ng. Quy t\u1eafc n\u00e0y c\u0169ng s\u1ebd theo ch\u00fang ta c\u1ea3 cu\u1ed9c \u0111\u1eddi s\u1eed d\u1ee5ng trong \u0111\u1eddi s\u1ed1ng h\u1eb1ng ng\u00e0y.<\/p>\n D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 v\u00ed d\u1ee5 v\u1ec1 c\u00e1ch s\u1eed d\u1ee5ng quy t\u1eafc “nh\u00e2n chia tr\u01b0\u1edbc, c\u1ed9ng tr\u1eeb sau”:<\/p>\n Cho ph\u00e9p t\u00ednh: 6 \u00d7 (5 + 2) = ?<\/p>\n \u0110\u00e1p \u00e1n: Khi gi\u1ea3i ph\u00e9p to\u00e1n n\u00e0y, ch\u00fang ta s\u1ebd th\u1ef1c hi\u1ec7n ph\u00e9p t\u00ednh ph\u00eda b\u00ean trong d\u1ea5u ngo\u1eb7c \u0111\u01a1n tr\u01b0\u1edbc, sau \u0111\u00f3 th\u1ef1c hi\u1ec7n ph\u00e9p nh\u00e2n.<\/p>\n V\u00ec v\u1eady, 6 \u00d7 (5 + 2) = 6 \u00d7 7 = 42.<\/p>\n Cho ph\u00e9p t\u00ednh: 3 + 4 \u00d7 7 = ?<\/p>\n \u0110\u00e1p \u00e1n: Trong ph\u00e9p t\u00ednh n\u00e0y, ch\u00fang ta s\u1ebd th\u1ef1c hi\u1ec7n ph\u00e9p nh\u00e2n tr\u01b0\u1edbc, sau \u0111\u00f3 th\u1ef1c hi\u1ec7n ph\u00e9p c\u1ed9ng.<\/p>\n V\u00ec v\u1eady, 3 + 4 \u00d7 7 = 3 + 28 = 31.<\/p>\n L\u01b0u \u00fd: Trong ph\u00e9p to\u00e1n n\u00e0y, khi ph\u1ee5 huynh ho\u1eb7c th\u1ea7y c\u00f4 gi\u00e1o d\u1ea1y tr\u1ebb n\u00ean nh\u1ea5n m\u1ea1nh cho tr\u1ebb hi\u1ec3u v\u00ec trong ph\u00e9p t\u00ednh kh\u00f4ng c\u00f3 b\u00ean trong d\u1ea5u ngo\u1eb7c \u0111\u01a1n n\u00ean s\u1ebd \u01b0u ti\u00ean th\u1ef1c hi\u1ec7n ph\u00e9p t\u00ednh v\u1edbi t\u00edch tr\u01b0\u1edbc sau \u0111\u00f3 m\u1edbi t\u1edbi ph\u00e9p c\u1ed9ng \u0111\u1ea1i s\u1ed1.<\/p>\n Tr\u00ean \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 quy t\u1eafc trong t\u00ednh to\u00e1n th\u00f4ng th\u01b0\u1eddng, b\u1ea1n c\u00f3 th\u1ec3 t\u1ef1 \u00e1p d\u1ee5ng trong t\u00ednh to\u00e1n ho\u1eb7c h\u01b0\u1edbng d\u1eabn tr\u1ebb nh\u1ecf \u1edf giai \u0111o\u1ea1n b\u1eaft \u0111\u1ea7u. H\u00e3y nh\u1edb lu\u00f4n ghi nh\u1edb “nh\u00e2n chia tr\u01b0\u1edbc, c\u1ed9ng tr\u1eeb sau nh\u00e9!!!”<\/p>\n Bacdau.vn<\/a> mong r\u1eb1ng nh\u1eefng th\u00f4ng tin \u0111\u00e3 cung c\u1ea5p s\u1ebd h\u1eefu \u00edch cho b\u1ea1n, b\u1ea1n c\u00f3 th\u1ec3 tham kh\u1ea3o <\/span>c\u00e1ch t\u00ednh hi\u1ec7u su\u1ea5t c\u01a1 b\u1ea3n<\/a>.<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":" C\u00e1c ph\u00e9p to\u00e1n c\u1ed9ng tr\u1eeb nh\u00e2n chia lu\u00f4n \u0111\u01b0\u1ee3c gi\u00e1o vi\u00ean d\u1ea1y cho tr\u1ebb t\u1eeb ch\u01b0\u01a1ng tr\u00ecnh h\u1ecdc b\u1eadc ti\u1ec3u h\u1ecdc. Tuy nhi\u00ean hi\u1ec7n nay c\u00f2n kh\u00e1 nhi\u1ec1u ng\u01b0\u1eddi l\u00fang t\u00fang v\u1edbi kh\u00f4ng bi\u1ebft nh\u00e2n chia tr\u01b0\u1edbc, c\u1ed9ng tr\u1eeb sau c\u00f3 \u0111\u00fang kh\u00f4ng?<\/p>\n","protected":false},"author":1,"featured_media":4919,"comment_status":"open","ping_status":"closed","template":"","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}}},"kbtopic":[764],"kbtag":[766],"_links":{"self":[{"href":"https:\/\/bacdau.vn\/wp-json\/wp\/v2\/kb\/4787"}],"collection":[{"href":"https:\/\/bacdau.vn\/wp-json\/wp\/v2\/kb"}],"about":[{"href":"https:\/\/bacdau.vn\/wp-json\/wp\/v2\/types\/kb"}],"author":[{"embeddable":true,"href":"https:\/\/bacdau.vn\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/bacdau.vn\/wp-json\/wp\/v2\/comments?post=4787"}],"version-history":[{"count":6,"href":"https:\/\/bacdau.vn\/wp-json\/wp\/v2\/kb\/4787\/revisions"}],"predecessor-version":[{"id":8210,"href":"https:\/\/bacdau.vn\/wp-json\/wp\/v2\/kb\/4787\/revisions\/8210"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/bacdau.vn\/wp-json\/wp\/v2\/media\/4919"}],"wp:attachment":[{"href":"https:\/\/bacdau.vn\/wp-json\/wp\/v2\/media?parent=4787"}],"wp:term":[{"taxonomy":"kbtopic","embeddable":true,"href":"https:\/\/bacdau.vn\/wp-json\/wp\/v2\/kbtopic?post=4787"},{"taxonomy":"kbtag","embeddable":true,"href":"https:\/\/bacdau.vn\/wp-json\/wp\/v2\/kbtag?post=4787"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}C\u1ed9ng, tr\u1eeb, nh\u00e2n chia l\u00e0 g\u00ec? C\u01a1 s\u1edf n\u00e0o \u0111\u1ec3 x\u00e2y d\u1ef1ng n\u00ean c\u00e1c ph\u00e9p to\u00e1n \u0111\u00f3?<\/h2>\n
C\u00e1c quy t\u1eafc c\u1ed9ng tr\u1eeb nh\u00e2n chia<\/h2>\n
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B\u00e0i t\u1eadp cho b\u00e9<\/h2>\n
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