{"id":433,"date":"2026-02-27T23:33:28","date_gmt":"2026-02-27T16:33:28","guid":{"rendered":"https:\/\/newsyz.com\/?p=433"},"modified":"2026-02-27T23:33:28","modified_gmt":"2026-02-27T16:33:28","slug":"con-lam-toan-75-25-5-bi-co-gach-sai-me-di-kien-biet-dap-an-dung-thi-tam-phuc","status":"publish","type":"post","link":"https:\/\/newsyz.com\/index.php\/2026\/02\/27\/con-lam-toan-75-25-5-bi-co-gach-sai-me-di-kien-biet-dap-an-dung-thi-tam-phuc\/","title":{"rendered":"Con l\u00e0m to\u00e1:n 7,5 \u2013 2,5= 5 b\u1ecb c\u00f4 g\u1ea1ch sai, m\u1eb9 \u0111i ki\u1ec7n bi\u1ebft \u0111\u00e1p \u00e1:n \u0111\u00fang th\u00ec t\u00e2m ph\u1ee5c"},"content":{"rendered":"

B\u00e0 m\u1eb9 kh\u00f4ng th\u1ec3 nh\u00ecn ra \u0111\u01b0\u1ee3c con sai ch\u1ed7 n\u00e0o trong ph\u00e9p t\u00ednh 7,5 \u2013 2,5= 5.<\/b><\/p>\n

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To\u00e1n h\u1ecdc c\u00f3 th\u1ec3 n\u00f3i l\u00e0 m\u00f4n h\u1ecdc h\u1eefu \u00edch nhi\u1ec1u cho tr\u1ebb trong su\u1ed1t qu\u00e1 tr\u00ecnh tr\u01b0\u1edfng th\u00e0nh b\u1edfi h\u1ea7u h\u1ebft c\u00e1c c\u00f4ng vi\u1ec7c trong cu\u1ed9c s\u1ed1ng \u0111\u1eddi th\u01b0\u1eddng khi tr\u1ebb l\u1edbn l\u00ean \u0111\u1ec1u c\u1ea7n ph\u1ea3i s\u1eed d\u1ee5ng to\u00e1n h\u1ecdc d\u00f9 \u00edt hay nhi\u1ec1u. V\u00ec m\u1ee5c \u0111\u00edch n\u00e0y, cha m\u1eb9 n\u00ean s\u00e1t sao vi\u1ec7c d\u1ea1y to\u00e1n cho con t\u1eeb nh\u1ecf \u0111\u1ec3 khi tr\u01b0\u1edfng th\u00e0nh, b\u00e9 h\u1ecdc t\u1eadp t\u1ed1t m\u00f4n n\u00e0y, \u00e1p d\u1ee5ng \u0111\u00fang v\u00e0o cu\u1ed9c s\u1ed1ng c\u1ee7a b\u00e9.<\/em><\/b><\/p>\n

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Tr\u01b0\u1edbc \u0111\u00e2y m\u1ed9t b\u00e0 m\u1eb9 chia s\u1ebb v\u1ec1 b\u00e0i t\u1eadp l\u00e0m to\u00e1n c\u1ee7a con m\u00ecnh \u1edf tr\u01b0\u1eddng ti\u1ec3u h\u1ecdc \u0111\u00e3 g\u00e2y x\u00f4n xao m\u1ea1ng x\u00e3 h\u1ed9i, th\u1eddi gian g\u1ea7n \u0111\u00e2y l\u1ea1i \u0111\u01b0\u1ee3c m\u1ecdi ng\u01b0\u1eddi nh\u1eafc l\u1ea1i. Kh\u00f4ng \u00edt ng\u01b0\u1eddi tranh lu\u1eadn v\u1ec1 k\u1ebft qu\u1ea3 c\u1ee7a b\u00e0i to\u00e1n c\u0169ng nh\u01b0 c\u00e1ch h\u1ecdc sinh l\u00e0m, c\u00f4 gi\u00e1o ch\u1ea5m \u0111i\u1ec3m.<\/p>\n

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C\u1ee5 th\u1ec3 b\u00e0i t\u1eadp to\u00e1n c\u1ee7a con v\u1ecb ph\u1ee5 huynh n\u00e0y r\u1ea5t \u0111\u01a1n gi\u1ea3n, ch\u1ec9 l\u00e0 t\u00ednh to\u00e1n c\u00e1c ph\u00e9p t\u00ednh. Trong 6 ph\u00e9p t\u00ednh th\u00ec h\u1ecdc sinh n\u00e0y l\u00e0m \u0111\u00fang 5 ph\u00e9p t\u00ednh v\u00e0 \u0111\u00e3 b\u1ecb c\u00f4 gi\u00e1o g\u1ea1ch sai 1 ph\u00e9p t\u00ednh. Tuy nhi\u00ean theo ng\u01b0\u1eddi m\u1eb9 n\u00e0y c\u00f3 l\u1ebd c\u00f4 \u0111\u00e3 nh\u1ea7m. C\u1ee5 th\u1ec3 trong c\u00e2u h\u1ecfi c\u1ee7a c\u00f4 gi\u00e1o l\u00e0 \u201c7,5 \u2013 2,5 = ?\u201d, h\u1ecdc sinh \u0111\u01b0a ra \u0111\u00e1p \u00e1n l\u00e0 \u201c5\u201d v\u00e0 b\u1ecb c\u00f4 gi\u00e1o g\u1ea1ch \u0111i. Ng\u01b0\u1eddi m\u1eb9 cho r\u1eb1ng c\u00f4 gi\u00e1o c\u00f3 th\u1ec3 \u0111\u00e3 nh\u1ea7m l\u1eabn v\u1edbi k\u1ebft qu\u1ea3 l\u00e0m to\u00e1n c\u1ee7a con m\u00ecnh n\u00ean \u0111i h\u1ecfi l\u1ea1i c\u00f4 gi\u00e1o. Tuy nhi\u00ean nh\u1eefng g\u00ec c\u00f4 gi\u00e1o gi\u1ea3i th\u00edch khi\u1ebfn ng\u01b0\u1eddi m\u1eb9 c\u0169ng ph\u1ea3i t\u00e2m ph\u1ee5c kh\u1ea9u ph\u1ee5c.<\/p>\n

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C\u00f4 gi\u00e1o sau \u0111\u00f3 \u0111\u00e3 g\u1eedi l\u1ea1i nguy\u00ean m\u1eabu b\u00e0i to\u00e1n m\u00e0 m\u00e0 c\u00f4 \u0111\u00e3 \u0111\u01b0a ra cho c\u00e1c em h\u1ecdc sinh, trong \u0111\u00f3 y\u00eau c\u1ea7u ghi r\u00f5 l\u00e0 gi\u1eef nguy\u00ean s\u1ed1 sau d\u1ea5u th\u1eadp ph\u00e2n. Th\u1ebf nh\u01b0ng c\u00f3 l\u1ebd h\u1ecdc sinh \u0111\u00e3 kh\u00f4ng ch\u00fa \u00fd \u0111\u1ebfn y\u00eau c\u1ea7u \u0111\u00f3 m\u00e0 ch\u1ec9 cho ra \u0111\u00e1p \u00e1n l\u00e0 \u201c5\u201d. C\u00f2n \u0111\u00e1p \u00e1n \u0111\u00fang c\u1ee7a b\u00e0i to\u00e1n n\u00e0y ph\u1ea3i l\u00e0 \u201c7,5 \u2013 2,5 = 5,0\u201d ch\u1ee9 kh\u00f4ng ph\u1ea3i l\u00e0 \u201c5\u201d.<\/p>\n

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Tr\u00ean th\u1ef1c t\u1ebf tr\u01b0\u1edbc \u0111\u00f3 c\u0169ng c\u00f3 kh\u00e1 nhi\u1ec1u b\u00e0i to\u00e1n ti\u1ec3u h\u1ecdc t\u01b0\u1edfng ch\u1eebng nh\u01b0 \u0111\u01a1n gi\u1ea3n nh\u01b0ng n\u1ebfu h\u1ecdc sinh \u0111\u1ecdc b\u00e0i kh\u00f4ng k\u0129 r\u1ea5t d\u1ec5 b\u1ecb l\u1eeba, \u0111\u01b0a ra \u0111\u00e1p \u00e1n sai.<\/p>\n

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V\u00ed d\u1ee5 m\u1ed9t b\u00e0i to\u00e1n ti\u1ec3u h\u1ecdc kh\u00e1c m\u00e0 c\u00f4 gi\u00e1o \u0111\u00e3 \u0111\u01b0a ra l\u00e0 \u201cC\u00f3 10 c\u00e2n mu\u1ed1i, \u0103n 3 c\u00e2n tr\u01b0\u1edbc, sau \u0111\u00f3 \u0103n th\u00eam 2 c\u00e2n. T\u1ed5ng c\u1ed9ng thi\u1ebfu bao nhi\u00eau c\u00e2n mu\u1ed1i?\u201d.<\/p>\n

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Ngay sau \u0111\u00f3 em h\u1ecdc sinh \u0111\u00e3 l\u00e0m ph\u00e9p to\u00e1n \u201c10 \u2013 3 \u2013 2 = 5 (kg)\u201d. Th\u1ebf nh\u01b0ng th\u1eadt b\u1ea5t ng\u1edd, c\u00f4 gi\u00e1o \u0111\u00e3 g\u1ea1ch b\u00e0i to\u00e1n n\u00e0y c\u1ee7a em h\u1ecdc sinh v\u00e0 cho l\u00e0 n\u00f3 \u0111\u00e3 sai.<\/p>\n

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V\u00e0 sau khi b\u1ecb ph\u1ee5 huynh h\u1ecdc sinh l\u00ean ki\u1ec7n, c\u00f4 gi\u00e1o \u0111\u00e3 \u0111\u01b0a ra c\u00e1ch l\u00e0m ch\u00ednh x\u00e1c ph\u1ea3i l\u00e0 ph\u00e9p to\u00e1n ph\u1ea3i l\u00e0 3+2=5 (5kg). Theo c\u00f4 gi\u00e1o n\u1ebfu h\u1ecdc sinh b\u00ecnh t\u0129nh ph\u00e2n t\u00edch \u0111\u1ec1 b\u00e0i s\u1ebd nh\u1eadn th\u1ea5y d\u1eef li\u1ec7u 10kg ch\u1ec9 l\u00e0 \u0111\u1ec3 ph\u00e2n lo\u1ea1i h\u1ecdc sinh. N\u1ebfu em h\u1ecdc sinh n\u00e0o v\u1ed9i v\u00e0ng, h\u1ea5p t\u1ea5p ch\u1eafc ch\u1eafn s\u1ebd \u0111\u01b0a ra c\u00e1ch gi\u1ea3i to\u00e1n gi\u1ed1ng nh\u01b0 em h\u1ecdc sinh \u1edf ph\u00eda tr\u00ean, tuy nhi\u00ean n\u00e0o b\u1ea1n n\u00e0o th\u00f4ng minh, c\u1ea9n th\u1eadn m\u1ed9t ch\u00fat s\u1ebd hi\u1ec3u r\u00f5 \u0111\u01b0\u1ee3c c\u00e2u h\u1ecfi \u201cthi\u1ebfu bao nhi\u00eau c\u00e2n mu\u1ed1i\u201d \u2013 t\u1ee9c l\u00e0 \u00fd ch\u1ec9 s\u1ed1 c\u00e2n mu\u1ed1i m\u00e0 m\u00ecnh \u0111\u00e3 \u0103n m\u1ea5t, nh\u01b0 v\u1eady ph\u1ea3i l\u00e0 3+2=5 m\u1edbi \u0111\u00fang.<\/p>\n

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N\u1ebfu c\u00e2u h\u1ecfi l\u00e0 \u201cC\u00f3 t\u1ed5ng 10kg mu\u1ed1i, \u0111\u1ea7u ti\u00ean \u0103n 3kg, sau \u0111\u00f3 \u0103n 2kg, h\u1ecfi c\u00f2n th\u1eeba bao nhi\u00eau c\u00e2n\u201d th\u00ec m\u1edbi l\u00e0 10 \u2013 3 \u2013 2 = 5 (kg)\u201d.<\/p>\n

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Hay m\u1ed9t tr\u01b0\u1eddng h\u1ee3p kh\u00e1c, m\u1ed9t c\u1eadu b\u00e9 mang b\u00e0i ki\u1ec3m tra \u1edf tr\u00ean l\u1edbp v\u1ec1 nh\u00e0 v\u00e0 th\u1eafc m\u1eafc v\u1edbi m\u1eb9 v\u1ec1 m\u1ed9t b\u00e0i to\u00e1n 58-(28-10). C\u1eadu nh\u00f3c \u0111\u00e3 ho\u00e0n th\u00e0nh b\u00e0i to\u00e1n m\u1ed9t c\u00e1ch t\u1ec9 m\u1ec9 v\u00e0 cho k\u1ebft qu\u1ea3 r\u1eb1ng 40. Th\u1ebf nh\u01b0ng th\u1eadt b\u1ea5t ng\u1edd c\u00f4 gi\u00e1o \u0111\u00e3 g\u1ea1ch sai \u0111\u00e1p \u00e1n n\u00e0y. B\u00e0 m\u1eb9 \u0111\u00e3 ph\u1ea3i c\u1ea9n th\u1eadn t\u00ednh l\u1ea1i v\u1eabn th\u1ea5y \u0111\u00fang l\u00e0 k\u1ebft qu\u1ea3 tr\u00ean nh\u01b0ng kh\u00f4ng hi\u1ec3u sao c\u00f4 gi\u00e1o l\u1ea1i g\u1ea1ch \u0111i. C\u00f3 th\u1ec3 c\u00f4 gi\u00e1o \u0111\u00e3 g\u1ea1ch nh\u1ea7m ch\u0103ng?<\/p>\n

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Ch\u00ednh v\u00ec th\u1ebf b\u00e0 m\u1eb9 \u0111\u01b0a b\u00e0i to\u00e1n n\u00e0y \u0111\u1ec3 h\u1ecfi l\u1ea1i c\u00f4 gi\u00e1o. C\u00f4 gi\u00e1o \u0111\u1ed3ng t\u00ecnh v\u1edbi ph\u1ee5 huynh r\u1eb1ng \u0111\u00e1p \u00e1n c\u1ee7a con trai ch\u1ecb qu\u1ea3 th\u1ef1c kh\u00f4ng sai. Tuy nhi\u00ean c\u00e1ch l\u00e0m c\u1ee7a b\u00e9 l\u1ea1i ho\u00e0n to\u00e0n sai. Theo \u0111\u00f3 \u0111\u1ec1 b\u00e0i c\u1ee7a b\u00e0i to\u00e1n l\u00e0 \u201cy\u00eau c\u1ea7u b\u00e9 b\u1ecf d\u1ea5u ngo\u1eb7c v\u00e0 th\u1ef1c hi\u1ec7n \u0111\u1ed5i d\u1ea5u, sau \u0111\u00f3 m\u1edbi t\u00ednh to\u00e1n\u201d. Th\u1ebf nh\u01b0ng em h\u1ecdc sinh l\u1ea1i kh\u00f4ng b\u1ecf d\u1ea5u ngo\u1eb7c m\u00e0 v\u1eabn t\u00ednh to\u00e1n nh\u01b0 th\u01b0\u1eddng.<\/p>\n

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Th\u1eadt tr\u00f9ng h\u1ee3p l\u00e0 d\u00f9 l\u00e0m theo c\u00e1ch n\u00e0o th\u00ec k\u1ebft qu\u1ea3 c\u1ee7a b\u00e0i to\u00e1n v\u1eabn l\u00e0 40 nh\u01b0ng kh\u00f4ng ph\u1ea3i ph\u00e9p t\u00ednh n\u00e0o c\u0169ng may m\u1eafn nh\u01b0 th\u1ebf. C\u00f4 gi\u00e1o n\u00f3i r\u1eb1ng \u201cTuy \u0111\u00e1p \u00e1n c\u1ee7a con kh\u00f4ng sai nh\u01b0ng c\u00e1ch con gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 kh\u00f4ng \u0111\u00fang v\u1edbi y\u00eau c\u1ea7u c\u1ee7a b\u00e0i to\u00e1n. Do \u0111\u00f3 c\u00f4 c\u0169ng kh\u00f4ng th\u1ec3 ch\u1ea5m \u0111i\u1ec3m cho con \u0111\u01b0\u1ee3c\u201d. V\u1edbi l\u1eddi gi\u1ea3i th\u00edch c\u1ee7a c\u00f4 gi\u00e1o, ng\u01b0\u1eddi m\u1eb9 c\u0169ng \u0111\u1ed3ng t\u00ecnh v\u00e0 nh\u1eadn th\u1ea5y r\u1eb1ng kh\u00f4ng nh\u1eefng con trai b\u1ea5t c\u1ea9n m\u00e0 b\u1ea3n th\u00e2n ch\u1ecb c\u0169ng b\u1ea5t c\u1ea9n.<\/p>\n

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T\u1eeb nh\u1eefng c\u00e2u chuy\u1ec7n tr\u00ean \u0111\u00e2y c\u00f3 th\u1ec3 th\u1ea5y to\u00e1n ti\u1ec3u h\u1ecdc \u0111\u01a1n gi\u1ea3n nh\u01b0ng c\u0169ng c\u00f3 nh\u1eefng chi\u00eau th\u1ee9c \u0111\u1ec3 ph\u00e2n lo\u1ea1i h\u1ecdc sinh, gi\u00fap c\u00e1c em ph\u00e1t tri\u1ec3n nhi\u1ec1u k\u0129 n\u0103ng t\u00ednh to\u00e1n, suy t\u01b0 lo gic, \u0111\u1ecdc hi\u1ec3u\u2026 Ch\u00ednh v\u00ec th\u1ebf c\u00e1c b\u1eadc cha m\u1eb9 c\u0169ng c\u1ea7n nh\u1eafc nh\u1edf con em m\u00ecnh k\u0129 khi l\u00e0m to\u00e1n \u0111\u1ec3 kh\u00f4ng m\u1ea5t \u0111i\u1ec3m oan:<\/p>\n

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\u0110\u1ecdc c\u00e2u h\u1ecfi l\u00e0 b\u01b0\u1edbc \u0111\u1ea7u ti\u00ean \u0111\u1ec3 trau d\u1ed3i th\u00f3i quen xem x\u00e9t c\u00e2u h\u1ecfi nghi\u00eam t\u00fac<\/strong><\/p>\n

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Vi\u1ec7c r\u00e8n luy\u1ec7n cho h\u1ecdc sinh th\u00f3i quen xem l\u1ea1i c\u00e2u h\u1ecfi l\u00e0 m\u1ed9t nhi\u1ec7m v\u1ee5 l\u00e2u d\u00e0i, \u0111\u00f2i h\u1ecfi s\u1ef1 chung s\u1ee9c c\u1ee7a ph\u1ee5 huynh v\u00e0 th\u1ea7y c\u00f4. Trong qu\u00e1 tr\u00ecnh d\u1ea1y v\u00e0 h\u1ecdc, ph\u1ee5 huynh c\u00f3 th\u1ec3 d\u00f9ng ng\u00f3n tay \u0111\u1ec3 \u0111\u1ecdc c\u00e2u h\u1ecfi c\u00f9ng con, n\u00f3i ch\u1eadm \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o con hi\u1ec3u r\u00f5 c\u00e2u h\u1ecfi, n\u1ebfu con ch\u01b0a hi\u1ec3u th\u00ec \u0111\u1ecdc l\u1ea1i 2-3 l\u1ea7n.<\/p>\n

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\u01afu \u0111i\u1ec3m: thu h\u00fat s\u1ef1 ch\u00fa \u00fd, \u0111\u1ed3ng th\u1eddi c\u1ee7ng c\u1ed1 kh\u1ea3 n\u0103ng \u0111\u1ecdc v\u0103n b\u1ea3n c\u1ee7a tr\u1ebb. H\u1ecdc sinh ti\u1ec3u h\u1ecdc c\u00f3 kh\u1ea3 n\u0103ng nh\u1eadn bi\u1ebft v\u00e0 ghi nh\u1edb r\u1ea5t t\u1ed1t. N\u1ebfu cha m\u1eb9 th\u01b0\u1eddng xuy\u00ean h\u1ecdc v\u00e0 \u0111\u1ecdc c\u00f9ng con c\u0169ng c\u00f3 th\u1ec3 gi\u00fap con m\u1edf r\u1ed9ng \u0111a d\u1ea1ng nhi\u1ec1u ki\u1ebfn th\u1ee9c kh\u00e1c nhau.<\/p>\n

R\u00e8n luy\u1ec7n th\u00f3i quen \u0111\u1ecdc hi\u1ec3u<\/strong><\/p>\n

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\u01afu \u0111i\u1ec3m c\u1ee7a vi\u1ec7c n\u00e0y l\u00e0 c\u00f3 th\u1ec3 n\u00e2ng cao h\u01a1n n\u1eefa s\u1ef1 hi\u1ec3u bi\u1ebft v\u00e0 \u1ea5n t\u01b0\u1ee3ng c\u1ee7a tr\u1ebb v\u1ec1 nhi\u1ec1u \u0111\u1ec1 t\u00e0i kh\u00e1c nhau. V\u00ec h\u00e0nh \u0111\u1ed9ng v\u00e0 suy ngh\u0129 c\u00f3 m\u1ed1i li\u00ean h\u1ec7 ch\u1eb7t ch\u1ebd n\u00ean vi\u1ec7c \u0111\u1ecdc t\u1ed1t ch\u1ee7 \u0111\u1ec1 t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1edbi \u0111\u1ecdc truy\u1ec7n. V\u1eady n\u1ebfu g\u1ea5p \u0111\u00f4i s\u1ee3i d\u00e2y d\u00e0i 10cm th\u00ec m\u1ed7i \u0111o\u1ea1n d\u00e0i bao nhi\u00eau cm? L\u00fac n\u00e0y, b\u1ea1n n\u00ean \u0111\u1ec3 tr\u1ebb t\u1ef1 l\u00e0m, t\u1ef1 m\u00ecnh v\u1ea1ch ra \u0111\u1ed9 d\u00e0i c\u1ee7a t\u1eebng n\u1eeda g\u1ea5p kh\u00fac, khi tr\u1ebb hi\u1ec3u r\u00f5 r\u00e0ng th\u00ec b\u1ed1 m\u1eb9 n\u00ean khen ng\u1ee3i \u0111\u1ed9ng vi\u00ean tr\u1ebb.<\/p>\n

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\u0110\u00e1nh d\u1ea5u c\u00e1c \u0111i\u1ec3m ch\u00ednh v\u00e0 ph\u1ee5 trong khi \u0111\u1ecdc<\/strong><\/p>\n

C\u00e1c c\u00e2u h\u1ecfi \u1ee9ng d\u1ee5ng To\u00e1n h\u1ecdc th\u01b0\u1eddng c\u00f3 nhi\u1ec1u n\u1ed9i dung v\u00e0 cung c\u1ea5p nhi\u1ec1u th\u00f4ng tin. Do \u0111\u00f3, c\u00e1c em b\u1eaft bu\u1ed9c ph\u1ea3i r\u00fat ra c\u00e1c \u0111i\u1ec3m ch\u00ednh khi l\u00e0m b\u00e0i. \u0110\u1ed3ng th\u1eddi, l\u1ecdc ra nh\u1eefng th\u00f4ng tin quan tr\u1ecdng, \u0111i\u1ec1u n\u00e0y gi\u00fap c\u00e1c em n\u1eafm b\u1eaft ch\u00ednh x\u00e1c y\u00eau c\u1ea7u c\u1ee7a c\u00e2u h\u1ecfi c\u0169ng nh\u01b0 h\u01b0\u1edbng gi\u1ea3i quy\u1ebft.<\/p>\n

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Vi\u1ec7c trau d\u1ed3i nh\u1eefng th\u00f3i quen n\u00e0y kh\u00f4ng ph\u1ea3i \u201cng\u00e0y m\u1ed9t ng\u00e0y hai\u201d, m\u00e0 c\u1ea7n ph\u1ea3i \u0111\u01b0\u1ee3c trau d\u1ed3i trong m\u1ed9t th\u1eddi gian d\u00e0i. V\u00ec v\u1eady, h\u00e3y \u0111\u1ed3ng h\u00e0nh v\u00e0 khuy\u1ebfn kh\u00edch con b\u1ea1n nhi\u1ec1u h\u01a1n \u0111\u1ec3 ch\u00fang c\u00f3 \u0111\u01b0\u1ee3c nh\u1eefng th\u00f3i quen t\u1ed1t, c\u00f3 l\u1ee3i cho vi\u1ec7c c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng ti\u1ebfp nh\u1eadn th\u00f4ng tin c\u0169ng nh\u01b0 ch\u1ea5t l\u01b0\u1ee3ng t\u1ed5ng th\u1ec3 c\u1ee7a tr\u1ebb.<\/p>\n

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NGU\u1ed2N<\/p>\n

Ng\u01b0\u1eddi \u0110\u01b0a Tin<\/p>\n

tin t\u1ee9c<\/p>\n","protected":false},"excerpt":{"rendered":"

B\u00e0 m\u1eb9 kh\u00f4ng th\u1ec3 nh\u00ecn ra \u0111\u01b0\u1ee3c con sai ch\u1ed7 n\u00e0o trong ph\u00e9p t\u00ednh 7,5 \u2013 2,5= 5.     To\u00e1n h\u1ecdc c\u00f3 th\u1ec3 n\u00f3i l\u00e0 m\u00f4n h\u1ecdc h\u1eefu \u00edch nhi\u1ec1u cho tr\u1ebb trong su\u1ed1t qu\u00e1 tr\u00ecnh tr\u01b0\u1edfng th\u00e0nh b\u1edfi h\u1ea7u h\u1ebft c\u00e1c c\u00f4ng vi\u1ec7c trong cu\u1ed9c s\u1ed1ng \u0111\u1eddi th\u01b0\u1eddng khi tr\u1ebb l\u1edbn l\u00ean \u0111\u1ec1u […]<\/p>\n","protected":false},"author":1,"featured_media":434,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-433","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-chua-phan-loai"],"_links":{"self":[{"href":"https:\/\/newsyz.com\/index.php\/wp-json\/wp\/v2\/posts\/433","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/newsyz.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/newsyz.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/newsyz.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/newsyz.com\/index.php\/wp-json\/wp\/v2\/comments?post=433"}],"version-history":[{"count":1,"href":"https:\/\/newsyz.com\/index.php\/wp-json\/wp\/v2\/posts\/433\/revisions"}],"predecessor-version":[{"id":435,"href":"https:\/\/newsyz.com\/index.php\/wp-json\/wp\/v2\/posts\/433\/revisions\/435"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/newsyz.com\/index.php\/wp-json\/wp\/v2\/media\/434"}],"wp:attachment":[{"href":"https:\/\/newsyz.com\/index.php\/wp-json\/wp\/v2\/media?parent=433"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/newsyz.com\/index.php\/wp-json\/wp\/v2\/categories?post=433"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/newsyz.com\/index.php\/wp-json\/wp\/v2\/tags?post=433"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}