{"id":3993,"date":"2018-08-07T04:09:17","date_gmt":"2018-08-07T04:09:17","guid":{"rendered":"https:\/\/kynaforkids.vn\/blog\/?p=3993"},"modified":"2022-06-02T08:20:28","modified_gmt":"2022-06-02T01:20:28","slug":"giup-be-hoc-toan-lop-1-de-dang-voi-4-buoc","status":"publish","type":"post","link":"https:\/\/kynaforkids.vn\/blog\/giup-be-hoc-toan-lop-1-de-dang-voi-4-buoc.html","title":{"rendered":"Gi\u00fap b\u00e9 h\u1ecdc to\u00e1n l\u1edbp 1 d\u1ec5 d\u00e0ng v\u1edbi 4 b\u01b0\u1edbc"},"content":{"rendered":"

\u0110\u1ec3 con y\u00eau d\u1ea7n quen v\u1edbi th\u1ebf gi\u1edbi \u0111\u1ea7y m\u1edbi l\u1ea1 c\u1ee7a con s\u1ed1, ph\u00e9p t\u00ednh khi b\u00e9 h\u1ecdc to\u00e1n l\u1edbp 1, cha m\u1eb9 h\u00e3y chu\u1ea9n b\u1ecb cho b\u00e9 t\u00e2m th\u1ebf v\u1eefng v\u00e0ng th\u00f4ng qua t\u1eebng b\u01b0\u1edbc nh\u01b0 l\u00e0m quen, nh\u1eadn d\u1ea1ng, t\u00ednh b\u1eb1ng h\u00ecnh \u1ea3nh c\u00f9ng v\u1edbi vi\u1ec7c th\u01b0\u1eddng xuy\u00ean thay \u0111\u1ed5i ph\u01b0\u01a1ng ph\u00e1p d\u1ea1y, n\u01a1i h\u1ecdc ph\u00f9 h\u1ee3p. \u00a0<\/strong><\/p>\n

Khi b\u00e9 b\u1eaft \u0111\u1ea7u v\u00e0o l\u1edbp 1 v\u00e0 h\u1ecdc to\u00e1n c\u0169ng l\u00e0 l\u00fac cha m\u1eb9 c\u0169ng \u0111au \u0111\u1ea7u trong vi\u1ec7c t\u00ecm ki\u1ebfm ph\u01b0\u01a1ng ph\u00e1p \u0111\u1ec3 d\u1ea1y b\u00e9 h\u1ecdc c\u00e1ch t\u00ednh to\u00e1n. L\u00e0m sao \u0111\u1ec3 b\u00e9 nh\u1eadn bi\u1ebft v\u00e0 t\u00ednh nhanh c\u00e1c ph\u00e9p to\u00e1n? L\u00e0m sao \u0111\u1ec3 b\u00e9 kh\u00f4ng \u201cgh\u00e9t b\u1ecf\u201d m\u00e0 ch\u1ecbu g\u1eafn b\u00f3 trong vi\u1ec7c l\u00e0m quen v\u1edbi ng\u01b0\u1eddi b\u1ea1n m\u1edbi n\u00e0y? C\u00e2u tr\u1ea3 l\u1eddi n\u1eb1m \u1edf c\u00e1c b\u01b0\u1edbc \u0111\u01a1n gi\u1ea3n sau:<\/span><\/p>\n

L\u00e0m quen v\u1edbi con s\u1ed1 v\u00e0 h\u00ecnh h\u1ecdc l\u00e0 s\u1ef1 kh\u1edfi \u0111\u1ea7u cho b\u00e9 h\u1ecdc to\u00e1n l\u1edbp 1<\/strong><\/h2>\n

Tr\u01b0\u1edbc khi d\u1ea1y b\u00e9 h\u1ecdc to\u00e1n l\u1edbp 1, cha m\u1eb9 h\u00e3y cho b\u00e9 c\u00f3 th\u1eddi gian \u201c\u0111\u1ebfn g\u1ea7n v\u00e0 th\u00edch nghi\u201d v\u1edbi nh\u1eefng con s\u1ed1 m\u00e0 b\u00e9 s\u1eafp ph\u1ea3i h\u1ecdc. \u0110\u1eebng c\u1ed1 \u00e9p b\u00e9 ph\u1ea3i t\u00ednh th\u1eadt nhanh ngay c\u1ea3 khi b\u00e9 c\u00f2n ch\u01b0a nh\u1eadn th\u1ee9c \u0111\u01b0\u1ee3c \u00fd ngh\u0129a c\u1ee7a nh\u1eefng con s\u1ed1 \u1ea5y. M\u1ecdi th\u1ee9 s\u1ebd d\u1ec5 d\u00e0ng h\u01a1n khi b\u1ea1n b\u1eaft \u0111\u1ea7u d\u1ea1y b\u00e9 t\u1eadp \u0111\u1ebfm, b\u1eaft \u0111\u1ea7u t\u1eeb c\u00e1c ng\u00f3n tay, ng\u00f3n ch\u00e2n r\u1ed3i \u0111\u1ebfn s\u1ed1 l\u01b0\u1ee3ng \u0111\u1ed3 v\u1eadt c\u00f3 trong nh\u00e0 th\u00f4ng qua vi\u1ec7c \u0111\u1ebfm s\u1ed1 c\u00e1nh c\u1eeda c\u00f3 trong nh\u00e0, s\u1ed1 b\u00e1t \u0111\u0129a, s\u1ed1 th\u00e0nh vi\u00ean trong gia \u0111\u00ecnh,\u2026D\u1ea7n d\u1ea7n b\u00e9 s\u1ebd quen v\u1edbi vi\u1ec7c quan s\u00e1t v\u00e0 t\u1eadp \u0111\u1ebfm c\u00e1c con s\u1ed1 \u1edf xung quanh. Sau \u0111\u00f3 b\u1ea1n c\u00f3 th\u1ec3 d\u1ea1y b\u00e9 nh\u1eadn d\u1ea1ng c\u00e1c con s\u1ed1 b\u1eb1ng c\u00e1ch d\u00f9ng tranh \u1ea3nh ho\u1eb7c c\u1eaft gi\u1ea5y t\u1ea1o th\u00e0nh con s\u1ed1. Vi\u1ec7c n\u00e0y s\u1ebd gi\u00fap b\u00e9 ph\u00e2n bi\u1ec7t v\u00e0 hi\u1ec3u \u0111\u01b0\u1ee3c th\u1ee9 t\u1ef1, \u00fd ngh\u0129a l\u1edbn b\u00e9 c\u1ee7a con s\u1ed1 \u0111\u1ec3 gi\u00fap b\u00e9 d\u1ec5 d\u00e0ng c\u1ed9ng tr\u1eeb h\u01a1n.<\/span><\/p>\n

\"S\u1ed1
S\u1ed1 \u0111\u1ebfm b\u1eaft m\u1eaft, vui nh\u1ed9n gi\u00fap b\u00e9 h\u00e0o h\u1ee9ng khi l\u00e0m quen<\/figcaption><\/figure>\n

Ngo\u00e0i vi\u1ec7c d\u1ea1y b\u00e9 h\u1ecdc to\u00e1n l\u1edbp 1 b\u1eb1ng ch\u1eef s\u1ed1, b\u1ea1n c\u0169ng \u0111\u1eebng qu\u00ean d\u1ea1y b\u00e9 nh\u1eadn d\u1ea1ng h\u00ecnh h\u1ecdc. B\u1ea1n c\u00f3 th\u1ec3 mua nh\u1eefng b\u1ed9 \u0111\u1ed3 ch\u01a1i g\u1ed7 \u0111\u00e3 \u0111\u01b0\u1ee3c t\u1ea1o nhi\u1ec1u h\u00ecnh \u0111\u1ec3 h\u1ed7 tr\u1ee3 ho\u1eb7c s\u1eed d\u1ee5ng gi\u1ea5y c\u00e1c-t\u00f4ng c\u1eaft th\u00e0nh h\u00ecnh vu\u00f4ng, tam gi\u00e1c,\u2026r\u1ed3i t\u00f4 m\u00e0u b\u1eaft m\u1eaft \u0111\u1ec3 thu h\u00fat s\u1ef1 ch\u00fa \u00fd c\u1ee7a b\u00e9.<\/span><\/p>\n

V\u00e0o b\u00e0i b\u1eb1ng th\u1ef1c t\u1ebf sinh \u0111\u1ed9ng<\/strong><\/h2>\n

Sau khi b\u00e9 nh\u1eadn bi\u1ebft v\u00e0 vi\u1ebft \u0111\u01b0\u1ee3c c\u00e1c ch\u1eef s\u1ed1, \u0111\u1eebng v\u1ed9i \u00e9p b\u00e9 ng\u1ed3i v\u00e0o b\u00e0n, m\u1edf s\u00e1ch ra v\u00e0 y\u00eau c\u1ea7u b\u00e9 t\u00ednh to\u00e1n v\u00e0o v\u1edf. Th\u1ef1c ti\u1ec5n lu\u00f4n l\u00e0 v\u00ed d\u1ee5 minh ho\u1ea1 d\u1ec5 hi\u1ec3u m\u00e0 kh\u00f4ng g\u00e2y nh\u00e0m ch\u00e1n. N\u1ebfu mu\u1ed1n b\u00e9 l\u00e0m to\u00e1n c\u1ed9ng, b\u1ea1n h\u00e3y d\u00f9ng c\u00e1c vi\u00ean k\u1eb9o, tr\u00e1i c\u00e2y, b\u00fat vi\u1ebft r\u1ed3i s\u1eafp ch\u00fang tr\u00ean b\u00e0n, \u0111\u1ec3 l\u1ea7n l\u01b0\u1ee3t s\u1ed1 \u0111\u1ed3 v\u1eadt m\u00e0 b\u1ea1n mu\u1ed1n l\u00ean b\u00e0n, d\u1ea7n d\u1ea7n th\u00eam v\u00e0o r\u1ed3i y\u00eau c\u1ea7u b\u00e9 \u0111\u1ebfm. Ho\u1eb7c khi l\u00e0m to\u00e1n tr\u1eeb, b\u1ea1n s\u1ebd l\u00e0m ng\u01b0\u1ee3c l\u1ea1i, d\u00f9ng b\u00e0n tay che m\u1ea5t \u0111i. Th\u00f4ng qua v\u00ed d\u1ee5 th\u1ef1c t\u1ebf, c\u00e1c h\u00ecnh \u1ea3nh v\u00e0 ph\u00e9p t\u00ednh c\u1ed9ng tr\u1eeb s\u1ebd d\u1ea7n \u0111i v\u00e0o \u00fd th\u1ee9c, gi\u00fap b\u00e9 nh\u1edb l\u00e2u v\u00e0 c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng lien t\u01b0\u1edfng d\u00f9 kh\u00f4ng c\u00f2n c\u00e1i k\u1eb9o, qu\u1ea3 t\u00e1o n\u00e0o \u1edf tr\u01b0\u1edbc m\u1eaft.<\/span><\/p>\n

D\u1ea1y b\u00e9 ng\u1ed3i v\u00e0o b\u00e0n v\u00e0 t\u1eadp trung<\/strong><\/h2>\n

Sau khi b\u00e9 l\u1edbp 1 \u0111\u00e3 quen v\u1edbi c\u00e1c ph\u00e9p t\u00ednh to\u00e1n qua \u0111\u1ed3 v\u1eadt, l\u00fac n\u00e0y b\u1ea1n c\u00f3 th\u1ec3 d\u00f9ng gi\u1ea5y vi\u1ebft \u0111\u1ec3 d\u1ea1y b\u00e9 \u0111\u1eb7t c\u00e1c ph\u00e9p t\u00ednh r\u1ed3i t\u00ednh. Th\u1eddi \u0111i\u1ec3m n\u00e0y, quan tr\u1ecdng l\u00e0 b\u1ea1n s\u1ebd r\u00e8n cho b\u00e9 kh\u1ea3 n\u0103ng t\u1eadp trung, c\u00e1ch s\u1eafp c\u00e1c ph\u00e9p t\u00ednh, c\u00e1c d\u1ea5u c\u1ed9ng tr\u1eeb, l\u1edbn b\u00e9 sao cho th\u1eb3ng h\u00e0ng, ngay ng\u1eafn v\u00e0 \u0111\u00fang ch\u1ed7. H\u00e3y c\u1ed5 v\u0169 b\u00e9 b\u1eb1ng c\u00e1c m\u00f3n qu\u00e0 nh\u1ecf nh\u01b0 k\u1eb9o b\u00e1nh, t\u0103ng d\u1ea7n gi\u1edd h\u1ecdc t\u1ea1i b\u00e0n \u0111\u1ec3 b\u00e9 quen, khi v\u00e0o l\u1edbp b\u00e9 s\u1ebd d\u1ec5 t\u1eadp trung l\u1eafng nghe th\u1ea7y c\u00f4 h\u01a1n. \u0110\u1eebng qu\u00ean h\u01b0\u1edbng d\u1eabn b\u00e9 c\u00e1ch ng\u1ed3i h\u1ecdc \u0111\u00fang t\u01b0 th\u1ebf, s\u1ebd gi\u00fap b\u00e9 tr\u00e1nh cong v\u1eb9o c\u1ed9t s\u1ed1ng, v\u00e0 khi ng\u1ed3i \u0111\u00fang, b\u00e9 kh\u00f4ng b\u1ecb m\u1ecfi n\u00ean s\u1ebd ch\u1ecbu ng\u1ed3i h\u1ecdc l\u00e2u h\u01a1n.<\/span><\/p>\n

Linh ho\u1ea1t c\u00e1ch d\u1ea1y v\u00e0 \u0111\u1ecba \u0111i\u1ec3m<\/strong><\/h2>\n

Kh\u00f4ng ph\u1ea3i l\u00fac n\u00e0o h\u1ecdc c\u0169ng ph\u1ea3i \u1edf b\u00e0n h\u1ecdc, b\u1ea1n c\u00f3 th\u1ec3 d\u1ea1y b\u00e9 \u1edf nh\u1eefng n\u01a1i nh\u01b0 c\u00f4ng vi\u00ean, si\u00eau th\u1ecb, nh\u00e0 s\u00e1ch. B\u1ea1n c\u00f3 th\u1ec3 y\u00eau c\u1ea7u b\u00e9 nh\u01b0: \u201cCon h\u00e3y l\u1ea5y cho m\u1eb9 (ba) hai h\u1ed9p s\u1eefa, l\u1ea5y cho b\u00e0 m\u1ed9t h\u1ed9p, v\u1eady ch\u00fang ta c\u1ea7n t\u00ednh ti\u1ec1n bao nhi\u00eau h\u1ed9p s\u1eefa?\u201d,\u2026 Ngo\u00e0i ra, b\u1ea1n c\u00f3 th\u1ec3 d\u1ea1y b\u00e9 h\u1ecdc to\u00e1n l\u1edbp 1 b\u1eb1ng c\u00e1ch mua c\u00e1c b\u1ed9 \u0111\u1ed3 ch\u01a1i h\u1ed7 tr\u1ee3 hay d\u00f9ng c\u00e1c trang web v\u00e0 ph\u1ea7n m\u1ec1m tr\u00ean \u0111i\u1ec7n tho\u1ea1i \u0111\u1ec3 c\u00f9ng b\u00e9 h\u1ecd to\u00e1n, ch\u1eafc ch\u1eafn con b\u1ea1n s\u1ebd h\u00e0o h\u1ee9ng h\u01a1n.<\/span><\/p>\n

\"D\u1ea1y
D\u1ea1y b\u00e9 l\u1edbp 1 h\u1ecdc to\u00e1n b\u1eb1ng c\u00e1ch \u0111\u1ebfm s\u1ed1 \u0111\u1ed3 ch\u01a1i gi\u00fap b\u00e9 d\u1ec5 ti\u1ebfp thu h\u01a1n<\/figcaption><\/figure>\n

M\u1ed9t \u0111i\u1ec1u l\u01b0u \u00fd cho c\u00e1c b\u1eadc ph\u1ee5 huynh, to\u00e1n l\u1edbp 1 \u0111\u1ed1i v\u1edbi ch\u00fang ta ch\u1ec9 l\u00e0 nh\u1eefng ph\u00e9p t\u00ednh \u0111\u01a1n gi\u1ea3n nh\u01b0ng \u0111\u1ed1i v\u1edbi b\u00e9 \u0111\u00f3 l\u00e0 c\u1ea3 th\u1ebf gi\u1edbi m\u1edbi \u0111\u1ea7y l\u1ea1 l\u1eabm. V\u00ec th\u1ebf h\u00e3y ki\u00ean nh\u1eabn, l\u1eafng nghe b\u00e9 v\u00e0 \u0111\u1ed3ng h\u00e0nh c\u00f9ng b\u00e9 qua t\u1eebng giai \u0111o\u1ea1n khi b\u00e9 \u0111\u00e3 s\u1eb5n s\u00e0ng. \u00c9p bu\u1ed9c, la m\u1eafng ch\u1ec9 l\u00e0 \u0111\u00f2n ng\u01b0\u1ee3c khi\u1ebfn con tr\u1ebb s\u1ee3 h\u00e3i v\u00e0 ch\u00e1n n\u1ea3n vi\u1ec7c h\u1ecdc h\u01a1n<\/span><\/p>\n

B\u1ea1n c\u00f3 bi\u1ebft v\u1ec1 ph\u1ea7n m\u1ec1m h\u1ecdc to\u00e1n l\u1edbp 1<\/h2>\n

Hi\u1ec7n t\u1ea1i tr\u00ean th\u00ec tr\u01b0\u1eddng Vi\u1ec7t Nam c\u00f3 r\u1ea5t nhi\u1ec1u ph\u1ea7n m\u1ec1m h\u1ecdc to\u00e1n l\u1edbp 1<\/a><\/strong> \u0111\u1ec3 cho ph\u1ee5 huynh l\u1ef1a ch\u1ecdn, c\u00f3 r\u1ea5t nhi\u1ec1u ph\u1ea7n m\u1ec1m mi\u1ec5n ph\u00ed v\u00e0 c\u00f3 ph\u00ed, tuy nhi\u00ean th\u00ec theo kinh nghi\u1ec7m b\u1ea1n n\u00ean ch\u1ecdn nh\u1eefng ph\u1ea7n m\u1ec1m c\u00f3 ph\u00ed cho tr\u1ebb. V\u00ec sao? c\u00e1c ph\u1ea7n m\u1ec1m c\u00f3 ph\u00ed s\u1ebd \u0111\u01b0\u1ee3c \u0111\u1ea7u t\u01b0 b\u00e0y b\u1ea3n theo \u0111\u00fang gi\u00e1o tr\u00ecnh \u0111\u1ec3 ch\u1ea1y cho tr\u1ebb m\u1ed9t c\u00e1ch h\u1ee3p l\u00fd nh\u1ea5t, \u0111\u1ec3 tr\u1ebb c\u00f3 th\u1ec3 ti\u1ebfp thu t\u1ed1t nh\u1ea5t.<\/p>\n

To\u00e1n l\u1edbp 1 n\u00e2ng cao<\/h2>\n

Tr\u1ebb \u0111ang \u1edf \u0111\u1ed9 tu\u1ed5i l\u1edbp 1 th\u01b0\u1eddng r\u1ea5t hay ph\u00e1t huy h\u1ebft kh\u1ea3 n\u0103ng c\u1ee7a m\u00ecnh, n\u1ebfu b\u1ea1n c\u00f3 th\u1ec3 t\u1ef1 tin v\u00e0o s\u1ef1 th\u00f4ng m\u00ecnh c\u1ee7a con m\u00ecnh th\u00ec b\u1ea1n c\u00f3 th\u1ec3 cho tr\u1ebb th\u1eed m\u1ed9t s\u1ed1 b\u00e0i t\u1eadp to\u00e1n l\u1edbp 1 n\u00e2ng cao. B\u1ea1n c\u00f3 th\u1ec3 xem th\u00eam \u1edf ph\u00eda d\u01b0\u1edbi.<\/p>\n

B\u00e0i 1:<\/strong>\u00a0S\u1ed1?<\/p>\n

……+ 26 = 46 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a098 – ….. = 38 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 6 + …. = 17<\/p>\n

78 – …. = 70 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 …. \u2013 71 = 12 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0…..+ 37 = 67<\/p>\n

90 – …. = 70 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 76 – … = 0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 54 – …. = 54<\/p>\n

B\u00e0i 2:<\/strong>\u00a0T\u00ednh<\/p>\n

86 \u2013 36 = ….<\/p>\n

86 \u2013 56 = ….<\/p>\n

50 + 34 = ….<\/p>\n

97 \u2013 47 =…..<\/p>\n

97 \u2013 50 = ….<\/p>\n

50 + 47 = …….<\/p>\n

68 \u2013 38 = …..<\/p>\n

34 + 30 = ….<\/p>\n

60 \u2013 40 = …..<\/p>\n

60 + 40 = ….<\/p>\n

100 \u2013 40 = ….<\/p>\n

100 \u2013 60 = ….<\/p>\n

B\u00e0i 3:<\/strong>\u00a0T\u00ednh<\/p>\n

40 + 30 + 8 = …..<\/p>\n

50 + 40 + 7 = ….<\/p>\n

70 \u2013 30 + 2 = ….<\/p>\n

90 \u2013 50 + 4 = …<\/p>\n

97 – 7 \u2013 40 = …<\/p>\n

97 \u2013 40 \u2013 7 = …<\/p>\n

B\u00e0i 4:<\/strong>\u00a0< > =<\/p>\n

40 + 5 …… 49 \u2013 7<\/p>\n

………………………………………………<\/p>\n

79 \u2013 28 …… 65 \u2013 14<\/p>\n

……………………………………………..<\/p>\n

34 + 25 ….. 43 + 15<\/p>\n

………………………………………………..<\/p>\n

79 \u2013 24 ….. 97 \u2013 42
\n……………………………………………….<\/p>\n

B\u00e0i 5:<\/strong>\u00a0L\u1edbp h\u1ecdc c\u00f3 20 h\u1ecdc sinh nam v\u00e0 16 h\u1ecdc sinh n\u1eef. H\u1ecfi l\u1edbp c\u00f3 t\u1ea5t c\u1ea3 bao nhi\u00eau h\u1ecdc sinh?<\/p>\n

B\u00e0i gi\u1ea3i<\/p>\n

………………………………………………………………………………………………………………..<\/p>\n

B\u00e0i 6:<\/strong>\u00a0Vi\u1ebft s\u1ed1:<\/p>\n

B\u1ea3y m\u01b0\u01a1i ba: ………….<\/p>\n

Ba m\u01b0\u01a1i b\u1ea3y: ………….<\/p>\n

Ch\u00edn m\u01b0\u01a1i l\u0103m: ……….<\/p>\n

N\u0103m m\u01b0\u01a1i ch\u00edn: ………<\/p>\n

S\u00e1u m\u01b0\u01a1i t\u01b0: ………….<\/p>\n

N\u0103m m\u01b0\u01a1i m\u1ed1t: ………<\/p>\n

B\u00e0i 7:<\/strong>\u00a0\u0110\u1eb7t t\u00ednh r\u1ed3i t\u00ednh<\/p>\n\n\n\n\n
\n

17\u00a0–\u00a06<\/p>\n

………<\/p>\n

………<\/p>\n

………<\/p>\n<\/td>\n

\n

10\u00a0+\u00a06<\/p>\n

………<\/p>\n

………<\/p>\n

………<\/p>\n<\/td>\n

\n

18\u00a0–\u00a08<\/p>\n

………<\/p>\n

………<\/p>\n

………<\/p>\n<\/td>\n

\n

17\u00a0–\u00a03<\/p>\n

………<\/p>\n

………<\/p>\n

………<\/p>\n<\/td>\n<\/tr>\n

\n

12\u00a0+\u00a05<\/p>\n

………<\/p>\n

………<\/p>\n

………<\/p>\n<\/td>\n

\n

14\u00a0+\u00a04<\/p>\n

………<\/p>\n

………<\/p>\n

………<\/p>\n<\/td>\n

\n

2\u00a0+\u00a013<\/p>\n

………<\/p>\n

………<\/p>\n

………<\/p>\n<\/td>\n

\n

15\u00a0–\u00a04<\/p>\n

………<\/p>\n

………<\/p>\n

………<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

B\u00e0i 8:<\/strong>\u00a0T\u00ednh<\/p>\n

18 cm – 8cm + 7 cm =………….<\/p>\n

15 cm + 4 cm – 9 cm = …………<\/p>\n

12 cm + 6 cm – 6 cm = …………<\/p>\n

16 cm – 2 cm – 4 cm = …………<\/p>\n

19 cm – 5 cm + 3 cm =………….<\/p>\n

10 cm + 7 cm – 5 cm = …………<\/p>\n

14 cm – 4 cm + 4 cm = …………<\/p>\n

11 cm + 8 cm – 4 cm = …………<\/p>\n

B\u00e0i 9:<\/strong>\u00a0An c\u00f3 12 vi\u00ean bi, Lan c\u00f3 7 vi\u00ean bi. H\u1ecfi c\u1ea3 hai b\u1ea1n c\u00f3 t\u1ea5t c\u1ea3 bao nhi\u00eau vi\u00ean bi?<\/p>\n

B\u00e0i 10:<\/strong>\u00a0Gi\u1ea3i b\u00e0i to\u00e1n theo t\u00f3m t\u1eaft sau:<\/p>\n

\"\"<\/p>\n

B\u00e0i 11:<\/strong>\u00a0\u0110\u1eb7t t\u00ednh r\u1ed3i t\u00ednh:<\/p>\n

50 + 30<\/p>\n

60 + 10<\/p>\n

20 + 70<\/p>\n

40 + 40<\/p>\n

B\u00e0i 12:<\/strong>\u00a0T\u00ednh:<\/p>\n

30cm + 40cm =………….<\/p>\n

50cm + 10cm = …………<\/p>\n

20cm + 50cm =………….<\/p>\n

60cm + 30cm = …………<\/p>\n","protected":false},"excerpt":{"rendered":"

\u0110\u1ec3 con y\u00eau d\u1ea7n quen v\u1edbi th\u1ebf gi\u1edbi \u0111\u1ea7y m\u1edbi l\u1ea1 c\u1ee7a con s\u1ed1, ph\u00e9p t\u00ednh khi b\u00e9 h\u1ecdc to\u00e1n l\u1edbp 1, cha m\u1eb9 h\u00e3y chu\u1ea9n b\u1ecb cho b\u00e9 t\u00e2m th\u1ebf v\u1eefng v\u00e0ng th\u00f4ng qua t\u1eebng b\u01b0\u1edbc nh\u01b0 l\u00e0m quen, nh\u1eadn d\u1ea1ng, t\u00ednh b\u1eb1ng h\u00ecnh \u1ea3nh c\u00f9ng v\u1edbi vi\u1ec7c th\u01b0\u1eddng xuy\u00ean thay \u0111\u1ed5i ph\u01b0\u01a1ng ph\u00e1p<\/p>\n","protected":false},"author":1,"featured_media":3995,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3363],"tags":[675,680,676,2261],"class_list":{"0":"post-3993","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-toan-tu-duy","8":"tag-be-hoc-toan-lop-1","9":"tag-day-be-hoc-toan-lop-1","10":"tag-day-be-hoc-toan-lop-1-tai-nha","11":"tag-day-con"},"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/kynaforkids.vn\/blog\/wp-json\/wp\/v2\/posts\/3993","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kynaforkids.vn\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kynaforkids.vn\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kynaforkids.vn\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/kynaforkids.vn\/blog\/wp-json\/wp\/v2\/comments?post=3993"}],"version-history":[{"count":0,"href":"https:\/\/kynaforkids.vn\/blog\/wp-json\/wp\/v2\/posts\/3993\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/kynaforkids.vn\/blog\/wp-json\/wp\/v2\/media\/3995"}],"wp:attachment":[{"href":"https:\/\/kynaforkids.vn\/blog\/wp-json\/wp\/v2\/media?parent=3993"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kynaforkids.vn\/blog\/wp-json\/wp\/v2\/categories?post=3993"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kynaforkids.vn\/blog\/wp-json\/wp\/v2\/tags?post=3993"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}