{"segment":[{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":" <center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai8/lv2/img\/2.jpg' \/><\/center> <br\/> T\u00ednh. $15 . 2^3 + 4.3^2 - 5.7 = ?$","select":["A. 120 ","B. 121 ","C. 122 ","D. 123 "],"hint":"T\u00ednh gi\u00e1 tr\u1ecb c\u1ee7a bi\u1ec3u th\u1ee9c theo th\u1ee9 t\u1ef1 th\u1ef1c hi\u1ec7n c\u00e1c ph\u00e9p t\u00ednh","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/>TH\u1ee8 T\u1ef0 TH\u1ef0C HI\u1ec6N C\u00c1C PH\u00c9P T\u00cdNH: <\/b> <br\/> 1. Th\u1ee9 t\u1ef1 th\u1ef1c hi\u1ec7n c\u00e1c ph\u00e9p t\u00ednh \u0111\u1ed1i v\u1edbi bi\u1ec3u th\u1ee9c kh\u00f4ng c\u00f3 d\u1ea5u ngo\u1eb7c: <br\/> L\u0169y th\u1eeba -> Nh\u00e2n v\u00e0 chia -> C\u1ed9ng v\u00e0 tr\u1eeb <br\/> 2. Th\u1ee9 t\u1ef1 th\u1ef1c hi\u1ec7n c\u00e1c ph\u00e9p t\u00ednh \u0111\u1ed1i v\u1edbi bi\u1ec3u th\u1ee9c c\u00f3 d\u1ea5u ngo\u1eb7c: <br\/> () -> [] -> {} <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> $\\begin{align*} & 15 . 2^3 + 4.3^2 - 5.7 \\\\ =& 15 . 8 + 4 . 9 - 5 . 7 \\\\ =& 120 + 36 - 35 \\\\ =& 156 - 35 \\\\ =& 121 \\end{align*}$ <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: B<\/span> ","column":2}]}],"id_ques":371},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":" <center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai8/lv2/img\/2.jpg' \/><\/center> <br\/> T\u00ednh. $7^9 : 7^7 - 3^2 + 2^3 . 5^2 = ?$","select":["A. 230 ","B. 240 ","C. 249 ","D. 250 "],"hint":"T\u00ednh gi\u00e1 tr\u1ecb c\u1ee7a bi\u1ec3u th\u1ee9c theo th\u1ee9 t\u1ef1 th\u1ef1c hi\u1ec7n c\u00e1c ph\u00e9p t\u00ednh","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/>TH\u1ee8 T\u1ef0 TH\u1ef0C HI\u1ec6N C\u00c1C PH\u00c9P T\u00cdNH: <\/b> <br\/> 1. Th\u1ee9 t\u1ef1 th\u1ef1c hi\u1ec7n c\u00e1c ph\u00e9p t\u00ednh \u0111\u1ed1i v\u1edbi bi\u1ec3u th\u1ee9c kh\u00f4ng c\u00f3 d\u1ea5u ngo\u1eb7c: <br\/> L\u0169y th\u1eeba -> Nh\u00e2n v\u00e0 chia -> C\u1ed9ng v\u00e0 tr\u1eeb <br\/> 2. Th\u1ee9 t\u1ef1 th\u1ef1c hi\u1ec7n c\u00e1c ph\u00e9p t\u00ednh \u0111\u1ed1i v\u1edbi bi\u1ec3u th\u1ee9c c\u00f3 d\u1ea5u ngo\u1eb7c: <br\/> () -> [] -> {} <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> $\\begin{align*} & 7^9 : 7^7 - 3^2 + 2^3 . 5^2 \\\\ =& 7^{9 - 7} - 9 + 8 . 25 \\\\ =& 7^2 - 9 + 8 . 25 \\\\ =& 49 - 9 + 200 \\\\ =& 40 + 200 \\\\ =& 240 \\end{align*}$ <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: B<\/span> ","column":2}]}],"id_ques":372},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":" <center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai8/lv2/img\/2.jpg' \/><\/center> <br\/> T\u00ednh. $27 : 3^2 + 5.2^4 - 6^2 : 9 = ?$","select":["A. 79 ","B. 97 ","C. 39 ","D. 45 "],"hint":"T\u00ednh gi\u00e1 tr\u1ecb c\u1ee7a bi\u1ec3u th\u1ee9c theo th\u1ee9 t\u1ef1 th\u1ef1c hi\u1ec7n c\u00e1c ph\u00e9p t\u00ednh","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/>TH\u1ee8 T\u1ef0 TH\u1ef0C HI\u1ec6N C\u00c1C PH\u00c9P T\u00cdNH: <\/b> <br\/> 1. Th\u1ee9 t\u1ef1 th\u1ef1c hi\u1ec7n c\u00e1c ph\u00e9p t\u00ednh \u0111\u1ed1i v\u1edbi bi\u1ec3u th\u1ee9c kh\u00f4ng c\u00f3 d\u1ea5u ngo\u1eb7c: <br\/> L\u0169y th\u1eeba -> Nh\u00e2n v\u00e0 chia -> C\u1ed9ng v\u00e0 tr\u1eeb <br\/> 2. Th\u1ee9 t\u1ef1 th\u1ef1c hi\u1ec7n c\u00e1c ph\u00e9p t\u00ednh \u0111\u1ed1i v\u1edbi bi\u1ec3u th\u1ee9c c\u00f3 d\u1ea5u ngo\u1eb7c: <br\/> () -> [] -> {} <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> $\\begin{align*} & 27 : 3^2 + 5.2^4 - 6^2 : 9 \\\\ =& 27 : 9 + 5 . 16 - 36 : 9 \\\\ =& 3 + 80 - 4 \\\\ =& 83 - 4 \\\\ =& 79 \\end{align*}$ <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: A<\/span> ","column":2}]}],"id_ques":373},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":" <center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai8/lv2/img\/4.jpg' \/><\/center> <br\/> T\u00ednh gi\u00e1 tr\u1ecb bi\u1ec3u th\u1ee9c: $29 - [16 + 3.(51 - 49)] = ?$","select":["A. 19 ","B. 7 ","C. 107 ","D. 21 "],"hint":"Trong bi\u1ec3u th\u1ee9c c\u00f3 d\u1ea5u ngo\u1eb7c ta th\u1ef1c hi\u1ec7n theo th\u1ee9 t\u1ef1: () -> [] -> {} ","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/>TH\u1ee8 T\u1ef0 TH\u1ef0C HI\u1ec6N C\u00c1C PH\u00c9P T\u00cdNH: <\/b> <br\/> 1. Th\u1ee9 t\u1ef1 th\u1ef1c hi\u1ec7n c\u00e1c ph\u00e9p t\u00ednh \u0111\u1ed1i v\u1edbi bi\u1ec3u th\u1ee9c kh\u00f4ng c\u00f3 d\u1ea5u ngo\u1eb7c: <br\/> L\u0169y th\u1eeba -> Nh\u00e2n v\u00e0 chia -> C\u1ed9ng v\u00e0 tr\u1eeb <br\/> 2. Th\u1ee9 t\u1ef1 th\u1ef1c hi\u1ec7n c\u00e1c ph\u00e9p t\u00ednh \u0111\u1ed1i v\u1edbi bi\u1ec3u th\u1ee9c c\u00f3 d\u1ea5u ngo\u1eb7c: <br\/> () -> [] -> {} <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> $\\begin{align*} & 29 - [16 + 3.(51 - 49)] \\\\ =& 29 - [16 + 3 . 2] \\\\ =& 29 - [16 + 6] \\\\ =& 29 - 22 \\\\ =& 7 \\end{align*}$ <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: B<\/span> ","column":2}]}],"id_ques":374},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":" <center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai8/lv2/img\/4.jpg' \/><\/center> <br\/> T\u00ednh. $295 - (31 - 2^2 . 5)^2 = ?$","select":["A. 174 ","B. 175 ","C. 176 ","D. 177"],"hint":"Trong bi\u1ec3u th\u1ee9c c\u00f3 d\u1ea5u ngo\u1eb7c ta th\u1ef1c hi\u1ec7n theo th\u1ee9 t\u1ef1: () -> [] -> {} ","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/>TH\u1ee8 T\u1ef0 TH\u1ef0C HI\u1ec6N C\u00c1C PH\u00c9P T\u00cdNH: <\/b> <br\/> 1. Th\u1ee9 t\u1ef1 th\u1ef1c hi\u1ec7n c\u00e1c ph\u00e9p t\u00ednh \u0111\u1ed1i v\u1edbi bi\u1ec3u th\u1ee9c kh\u00f4ng c\u00f3 d\u1ea5u ngo\u1eb7c: <br\/> L\u0169y th\u1eeba -> Nh\u00e2n v\u00e0 chia -> C\u1ed9ng v\u00e0 tr\u1eeb <br\/> 2. Th\u1ee9 t\u1ef1 th\u1ef1c hi\u1ec7n c\u00e1c ph\u00e9p t\u00ednh \u0111\u1ed1i v\u1edbi bi\u1ec3u th\u1ee9c c\u00f3 d\u1ea5u ngo\u1eb7c: <br\/> () -> [] -> {} <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> $\\begin{align*} & 295 - (31 - 2^2 . 5)^2 \\\\ =& 295 - (31 - 4.5)^2 \\\\ =& 295 - (31 - 20)^2 \\\\ =& 295 - 11^2 \\\\ =& 295 - 121 \\\\ =& 174 \\end{align*}$ <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: A<\/span> ","column":2}]}],"id_ques":375},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":5,"ques":" <center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai8/lv2/img\/4.jpg' \/><\/center> <br\/> T\u00ednh. $(5^{19} : 5^{17} + 3) : 7 = ?$","select":["A. 6 ","B. 7 ","C. 5 ","D. 4"],"hint":"Trong bi\u1ec3u th\u1ee9c c\u00f3 d\u1ea5u ngo\u1eb7c ta th\u1ef1c hi\u1ec7n theo th\u1ee9 t\u1ef1: () -> [] -> {} ","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/>TH\u1ee8 T\u1ef0 TH\u1ef0C HI\u1ec6N C\u00c1C PH\u00c9P T\u00cdNH: <\/b> <br\/> 1. Th\u1ee9 t\u1ef1 th\u1ef1c hi\u1ec7n c\u00e1c ph\u00e9p t\u00ednh \u0111\u1ed1i v\u1edbi bi\u1ec3u th\u1ee9c kh\u00f4ng c\u00f3 d\u1ea5u ngo\u1eb7c: <br\/> L\u0169y th\u1eeba -> Nh\u00e2n v\u00e0 chia -> C\u1ed9ng v\u00e0 tr\u1eeb <br\/> 2. Th\u1ee9 t\u1ef1 th\u1ef1c hi\u1ec7n c\u00e1c ph\u00e9p t\u00ednh \u0111\u1ed1i v\u1edbi bi\u1ec3u th\u1ee9c c\u00f3 d\u1ea5u ngo\u1eb7c: <br\/> () -> [] -> {} <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> $\\begin{align*} & (5^{19} : 5^{17} + 3) : 7 \\\\ =& (5^{19 - 17} + 3) : 7 \\\\ =& (5^2 + 3) : 7 \\\\ =& (25 + 3) : 7 \\\\ =& 28 : 7 \\\\ =& 4 \\end{align*}$ <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: D<\/span> ","column":2}]}],"id_ques":376},{"time":24,"part":[{"title":"\u0110i\u1ec1n t\u1eeb th\u00edch h\u1ee3p v\u00e0o ch\u1ed7 tr\u1ed1ng","title_trans":"","temp":"fill_the_blank","correct":[[["7"]]],"list":[{"point":5,"width":50,"content":"","type_input":"","ques":"T\u00ecm x bi\u1ebft: $120 - \\left\\{ 2^2 . 3 - [12 - (2x - 4)]\\right\\} = 110$ <br\/> V\u1eady x = _input_ ","hint":"Bi\u1ebfn \u0111\u1ed5i l\u1ea7n l\u01b0\u1ee3t t\u1eeb ngo\u00e0i v\u00e0o trong","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> TH\u1ee8 T\u1ef0 TH\u1ef0C HI\u1ec6N C\u00c1C PH\u00c9P T\u00cdNH: <\/b> <br\/> 1. Th\u1ee9 t\u1ef1 th\u1ef1c hi\u1ec7n c\u00e1c ph\u00e9p t\u00ednh \u0111\u1ed1i v\u1edbi bi\u1ec3u th\u1ee9c kh\u00f4ng c\u00f3 d\u1ea5u ngo\u1eb7c: <br\/> L\u0169y th\u1eeba -> Nh\u00e2n v\u00e0 chia -> C\u1ed9ng v\u00e0 tr\u1eeb <br\/> 2. Th\u1ee9 t\u1ef1 th\u1ef1c hi\u1ec7n c\u00e1c ph\u00e9p t\u00ednh \u0111\u1ed1i v\u1edbi bi\u1ec3u th\u1ee9c c\u00f3 d\u1ea5u ngo\u1eb7c: <br\/> () -> [] -> {} <br\/> <b> B\u01b0\u1edbc 1: <\/b> Coi bi\u1ec3u th\u1ee9c trong ngo\u1eb7c {} l\u00e0 s\u1ed1 tr\u1eeb ch\u01b0a bi\u1ebft <br\/> Mu\u1ed1n t\u00ecm s\u1ed1 tr\u1eeb ta l\u1ea5y s\u1ed1 b\u1ecb tr\u1eeb tr\u1eeb \u0111i hi\u1ec7u <br\/> <b> B\u01b0\u1edbc 2: <\/b> Coi bi\u1ec3u th\u1ee9c trong ngo\u1eb7c [] l\u00e0 s\u1ed1 tr\u1eeb ch\u01b0a bi\u1ebft <br\/> Mu\u1ed1n t\u00ecm s\u1ed1 tr\u1eeb ch\u01b0a bi\u1ebft ta l\u00e0m nh\u01b0 b\u01b0\u1edbc 1 <br\/> <b> B\u01b0\u1edbc 3: <\/b> Coi 2x - 4 l\u00e0 s\u1ed1 tr\u1eeb ch\u01b0a bi\u1ebft <br\/> Mu\u1ed1n t\u00ecm s\u1ed1 tr\u1eeb ch\u01b0a bi\u1ebft ta l\u00e0m nh\u01b0 b\u01b0\u1edbc 1 <br\/> <b> B\u01b0\u1edbc 4: <\/b> Bi\u1ebfn \u0111\u1ed5i ti\u1ebfp v\u00e0 t\u00ecm x <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/> Ta c\u00f3: <br\/> $\\begin{align*} 120 - \\left\\{ 2^2 . 3 - [12 - (2x - 4)]\\right\\} &= 110 \\\\ 2^2 . 3 - [12 - (2x - 4)] &= 120 - 110 \\\\ 4 . 3 - [12 - (2x - 4)] &= 10 \\\\ 12 - (2x - 4) &= 12 - 10 \\\\ 12 - (2x - 4) &= 2 \\\\ 2x - 4 &= 12 - 2 \\\\ 2x - 4 &= 10 \\\\ 2x &= 10 + 4 \\\\ 2x &= 14 \\\\ x &= 14 : 2 \\\\ x &= 7 \\end{align*}$ <br\/> <span class='basic_pink'> V\u1eady s\u1ed1 c\u1ea7n \u0111i\u1ec1n l\u00e0: 7 <\/span>"}]}],"id_ques":377},{"time":24,"part":[{"title":"\u0110i\u1ec1n t\u1eeb th\u00edch h\u1ee3p v\u00e0o ch\u1ed7 tr\u1ed1ng","title_trans":"","temp":"fill_the_blank","correct":[[["107"]]],"list":[{"point":5,"width":50,"content":"","type_input":"","ques":"T\u00ecm x bi\u1ebft: $[(6x - 72) : 2 - 84] . 28 = 5628$ <br\/> V\u1eady x = _input_ ","hint":"Bi\u1ebfn \u0111\u1ed5i l\u1ea7n l\u01b0\u1ee3t t\u1eeb ngo\u00e0i v\u00e0o trong","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> TH\u1ee8 T\u1ef0 TH\u1ef0C HI\u1ec6N C\u00c1C PH\u00c9P T\u00cdNH: <\/b> <br\/> 1. Th\u1ee9 t\u1ef1 th\u1ef1c hi\u1ec7n c\u00e1c ph\u00e9p t\u00ednh \u0111\u1ed1i v\u1edbi bi\u1ec3u th\u1ee9c kh\u00f4ng c\u00f3 d\u1ea5u ngo\u1eb7c: <br\/> L\u0169y th\u1eeba -> Nh\u00e2n v\u00e0 chia -> C\u1ed9ng v\u00e0 tr\u1eeb <br\/> 2. Th\u1ee9 t\u1ef1 th\u1ef1c hi\u1ec7n c\u00e1c ph\u00e9p t\u00ednh \u0111\u1ed1i v\u1edbi bi\u1ec3u th\u1ee9c c\u00f3 d\u1ea5u ngo\u1eb7c: <br\/> () -> [] -> {} <br\/> <b> B\u01b0\u1edbc 1: <\/b> Coi bi\u1ec3u th\u1ee9c trong ngo\u1eb7c [] l\u00e0 th\u1eeba s\u1ed1 ch\u01b0a bi\u1ebft <br\/> Mu\u1ed1n t\u00ecm th\u1eeba s\u1ed1 ch\u01b0a bi\u1ebft ta l\u1ea5y t\u00edch chia cho th\u1eeba s\u1ed1 \u0111\u00e3 bi\u1ebft <br\/> <b> B\u01b0\u1edbc 2: <\/b> Coi (6x - 72): 2 l\u00e0 s\u1ed1 b\u1ecb tr\u1eeb ch\u01b0a bi\u1ebft <br\/> Mu\u1ed1n t\u00ecm s\u1ed1 b\u1ecb tr\u1eeb ta l\u1ea5y hi\u1ec7u c\u1ed9ng v\u1edbi s\u1ed1 tr\u1eeb <br\/> <b> B\u01b0\u1edbc 3: <\/b> Coi 6x - 72 l\u00e0 s\u1ed1 b\u1ecb chia ch\u01b0a bi\u1ebft <br\/> Mu\u1ed1n t\u00ecm s\u1ed1 b\u1ecb chia ta l\u1ea5y th\u01b0\u01a1ng nh\u00e2n v\u1edbi s\u1ed1 chia <br\/> <b> B\u01b0\u1edbc 4: <\/b> Bi\u1ebfn \u0111\u1ed5i ti\u1ebfp v\u00e0 t\u00ecm x <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/> Ta c\u00f3: <br\/> $\\begin{align*} [(6x - 72) : 2 - 84] . 28 &= 5628 \\\\ (6x - 72) : 2 - 84 &= 5628 : 28 \\\\ (6x - 72) : 2 &= 201 + 84 \\\\ 6x - 72 &= 285 . 2 \\\\ 6x - 72 &= 570 \\\\ 6x &= 570 + 72 \\\\ x&= 642 : 6 \\\\ x &= 107 \\end{align*}$ <br\/> <span class='basic_pink'> V\u1eady s\u1ed1 c\u1ea7n \u0111i\u1ec1n l\u00e0: 107 <\/span>"}]}],"id_ques":378},{"time":24,"part":[{"title":"\u0110i\u1ec1n t\u1eeb th\u00edch h\u1ee3p v\u00e0o ch\u1ed7 tr\u1ed1ng","title_trans":"","temp":"fill_the_blank","correct":[[["11"]]],"list":[{"point":5,"width":50,"content":"","type_input":"","ques":"T\u00ecm x bi\u1ebft: $[(10 + x) . 2 + 3] : 3 - 2 = 13$ <br\/> V\u1eady x = _input_ ","hint":"Bi\u1ebfn \u0111\u1ed5i l\u1ea7n l\u01b0\u1ee3t t\u1eeb ngo\u00e0i v\u00e0o trong","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> TH\u1ee8 T\u1ef0 TH\u1ef0C HI\u1ec6N C\u00c1C PH\u00c9P T\u00cdNH: <\/b> <br\/> 1. Th\u1ee9 t\u1ef1 th\u1ef1c hi\u1ec7n c\u00e1c ph\u00e9p t\u00ednh \u0111\u1ed1i v\u1edbi bi\u1ec3u th\u1ee9c kh\u00f4ng c\u00f3 d\u1ea5u ngo\u1eb7c: <br\/> L\u0169y th\u1eeba -> Nh\u00e2n v\u00e0 chia -> C\u1ed9ng v\u00e0 tr\u1eeb <br\/> 2. Th\u1ee9 t\u1ef1 th\u1ef1c hi\u1ec7n c\u00e1c ph\u00e9p t\u00ednh \u0111\u1ed1i v\u1edbi bi\u1ec3u th\u1ee9c c\u00f3 d\u1ea5u ngo\u1eb7c: <br\/> () -> [] -> {} <br\/> <b> B\u01b0\u1edbc 1: <\/b> Coi bi\u1ec3u th\u1ee9c trong ngo\u1eb7c [] l\u00e0 s\u1ed1 b\u1ecb chia ch\u01b0a bi\u1ebft <br\/> Mu\u1ed1n t\u00ecm s\u1ed1 b\u1ecb chia ch\u01b0a bi\u1ebft ta l\u1ea5y th\u01b0\u01a1ng nh\u00e2n v\u1edbi s\u1ed1 chia <br\/> <b> B\u01b0\u1edbc 2: <\/b> Coi (10 + x). 2 l\u00e0 s\u1ed1 h\u1ea1ng ch\u01b0a bi\u1ebft <br\/> Mu\u1ed1n t\u00ecm s\u1ed1 h\u1ea1ng ch\u01b0a bi\u1ebft ta l\u1ea5y t\u1ed5ng tr\u1eeb \u0111i s\u1ed1 h\u1ea1ng \u0111\u00e3 bi\u1ebft<br\/> <b> B\u01b0\u1edbc 3: <\/b> Coi 10 + x l\u00e0 th\u1eeba s\u1ed1 ch\u01b0a bi\u1ebft <br\/> Mu\u1ed1n t\u00ecm th\u1eeba s\u1ed1 ch\u01b0a bi\u1ebft ta l\u1ea5y t\u00edch chia cho th\u1eeba s\u1ed1 \u0111\u00e3 bi\u1ebft <br\/> <b> B\u01b0\u1edbc 4: <\/b> Bi\u1ebfn \u0111\u1ed5i ti\u1ebfp v\u00e0 t\u00ecm x <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/> Ta c\u00f3: <br\/> $\\begin{align*} [(10 + x) . 2 + 3] : 3 - 2 & = 13 \\\\ [(10 + x) . 2 + 3] : 3 &= 13 + 2 \\\\ (10 + x) . 2 + 3 &= 15 . 3 \\\\ (10 + x).2 &= 45 - 3 \\\\ 10 + x &= 42 : 2 \\\\ 10 + x &= 21 \\\\ x &= 21 - 10 \\\\ x&= 11 \\end{align*}$ <br\/> <span class='basic_pink'> V\u1eady s\u1ed1 c\u1ea7n \u0111i\u1ec1n l\u00e0: 11 <\/span>"}]}],"id_ques":379},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":" <center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai8/lv2/img\/7.jpg' \/><\/center> <br\/> $ 3^{11} : 3^9 - 147 : 7^2 = 5$ <b> \u0110\u00daNG <\/b> hay <b> SAI <\/b>?","select":["A. \u0110\u00daNG ","B. SAI "],"hint":"Ta t\u00ednh gi\u00e1 tr\u1ecb c\u1ee7a bi\u1ec3u th\u1ee9c theo th\u1ee9 t\u1ef1 th\u1ef1c hi\u1ec7n c\u00e1c ph\u00e9p t\u00ednh","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/>TH\u1ee8 T\u1ef0 TH\u1ef0C HI\u1ec6N C\u00c1C PH\u00c9P T\u00cdNH: <\/b> <br\/> 1. Th\u1ee9 t\u1ef1 th\u1ef1c hi\u1ec7n c\u00e1c ph\u00e9p t\u00ednh \u0111\u1ed1i v\u1edbi bi\u1ec3u th\u1ee9c kh\u00f4ng c\u00f3 d\u1ea5u ngo\u1eb7c: <br\/> L\u0169y th\u1eeba -> Nh\u00e2n v\u00e0 chia -> C\u1ed9ng v\u00e0 tr\u1eeb <br\/> 2. Th\u1ee9 t\u1ef1 th\u1ef1c hi\u1ec7n c\u00e1c ph\u00e9p t\u00ednh \u0111\u1ed1i v\u1edbi bi\u1ec3u th\u1ee9c c\u00f3 d\u1ea5u ngo\u1eb7c: <br\/> () -> [] -> {} <br\/> <b> B\u01b0\u1edbc 1: <\/b> T\u00ednh c\u00e1c l\u0169y th\u1eeba <br\/> Chia hai l\u0169y th\u1eeba c\u00f9ng c\u01a1 s\u1ed1 theo quy t\u1eafc $a^m : a^n = a^{m - n}$ <br\/> B\u01b0\u1edbc 2: <\/b> T\u00ednh gi\u00e1 tr\u1ecb c\u1ee7a bi\u1ec3u th\u1ee9c theo th\u1ee9 t\u1ef1 th\u1ef1c hi\u1ec7n c\u00e1c ph\u00e9p t\u00ednh <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> $\\begin{align*} & 3^{11} : 3^9 - 147 : 7^2 \\\\ =& 3^{11 - 9} - 147 : 49 \\\\ =& 3^2 - 147 : 49 \\\\ =& 9 - 147 : 49 \\\\ =& 9 - 3 \\\\ =& 6 \\end{align*}$ <br\/> <br\/> V\u1eady kh\u1eb3ng \u0111\u1ecbnh '' $ 3^{11} : 3^9 - 147 : 7^2 = 5$'' l\u00e0 <b> SAI <\/b> <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: B<\/span> ","column":2}]}],"id_ques":380},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":" <center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai8/lv2/img\/7.jpg' \/><\/center> <br\/> $ 11^{25} : 11^{23} - 11 . (1^{10} + 2^3) = 2$ <b> \u0110\u00daNG <\/b> hay <b> SAI <\/b>?","select":["A. \u0110\u00daNG ","B. SAI "],"hint":"Ta t\u00ednh gi\u00e1 tr\u1ecb c\u1ee7a bi\u1ec3u th\u1ee9c theo th\u1ee9 t\u1ef1 th\u1ef1c hi\u1ec7n c\u00e1c ph\u00e9p t\u00ednh","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/>TH\u1ee8 T\u1ef0 TH\u1ef0C HI\u1ec6N C\u00c1C PH\u00c9P T\u00cdNH: <\/b> <br\/> 1. Th\u1ee9 t\u1ef1 th\u1ef1c hi\u1ec7n c\u00e1c ph\u00e9p t\u00ednh \u0111\u1ed1i v\u1edbi bi\u1ec3u th\u1ee9c kh\u00f4ng c\u00f3 d\u1ea5u ngo\u1eb7c: <br\/> L\u0169y th\u1eeba -> Nh\u00e2n v\u00e0 chia -> C\u1ed9ng v\u00e0 tr\u1eeb <br\/> 2. Th\u1ee9 t\u1ef1 th\u1ef1c hi\u1ec7n c\u00e1c ph\u00e9p t\u00ednh \u0111\u1ed1i v\u1edbi bi\u1ec3u th\u1ee9c c\u00f3 d\u1ea5u ngo\u1eb7c: <br\/> () -> [] -> {} <br\/> <b> B\u01b0\u1edbc 1: <\/b> T\u00ednh c\u00e1c l\u0169y th\u1eeba <br\/> Chia hai l\u0169y th\u1eeba c\u00f9ng c\u01a1 s\u1ed1 theo quy t\u1eafc $a^m : a^n = a^{m - n}$ <br\/> B\u01b0\u1edbc 2: <\/b> T\u00ednh gi\u00e1 tr\u1ecb c\u1ee7a bi\u1ec3u th\u1ee9c theo th\u1ee9 t\u1ef1 th\u1ef1c hi\u1ec7n c\u00e1c ph\u00e9p t\u00ednh<\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> $\\begin{align*} & 11^{25} : 11^{23} - 11 . (1^{10} + 2^3) \\\\ =& 11^{25 - 23} - 11 . (1 + 8) \\\\ =& 11^2 - 11 . 9 \\\\ =& 121 - 11 . 9 \\\\ =& 121 - 99 \\\\ =& 22 \\end{align*}$ <br\/> <br\/> V\u1eady kh\u1eb3ng \u0111\u1ecbnh '' $ 11^{25} : 11^{23} - 11 . (1^{10} + 2^3) = 2$'' l\u00e0 <b> SAI <\/b> <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: B<\/span> ","column":2}]}],"id_ques":381},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":" <center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai8/lv2/img\/7.jpg' \/><\/center> <br\/> $ 36 : 3^2 + 60 : 12 - 100 : 5^2 = 5$ <b> \u0110\u00daNG <\/b> hay <b> SAI <\/b>?","select":["A. \u0110\u00daNG ","B. SAI "],"hint":"Ta t\u00ednh gi\u00e1 tr\u1ecb c\u1ee7a bi\u1ec3u th\u1ee9c theo th\u1ee9 t\u1ef1 th\u1ef1c hi\u1ec7n c\u00e1c ph\u00e9p t\u00ednh","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/>TH\u1ee8 T\u1ef0 TH\u1ef0C HI\u1ec6N C\u00c1C PH\u00c9P T\u00cdNH: <\/b> <br\/> 1. Th\u1ee9 t\u1ef1 th\u1ef1c hi\u1ec7n c\u00e1c ph\u00e9p t\u00ednh \u0111\u1ed1i v\u1edbi bi\u1ec3u th\u1ee9c kh\u00f4ng c\u00f3 d\u1ea5u ngo\u1eb7c: <br\/> L\u0169y th\u1eeba -> Nh\u00e2n v\u00e0 chia -> C\u1ed9ng v\u00e0 tr\u1eeb <br\/> 2. Th\u1ee9 t\u1ef1 th\u1ef1c hi\u1ec7n c\u00e1c ph\u00e9p t\u00ednh \u0111\u1ed1i v\u1edbi bi\u1ec3u th\u1ee9c c\u00f3 d\u1ea5u ngo\u1eb7c: <br\/> () -> [] -> {} <br\/> <b> B\u01b0\u1edbc 1: <\/b> T\u00ednh c\u00e1c l\u0169y th\u1eeba <br\/> <b> B\u01b0\u1edbc 2: <\/b> T\u00ednh gi\u00e1 tr\u1ecb c\u1ee7a bi\u1ec3u th\u1ee9c theo th\u1ee9 t\u1ef1 th\u1ef1c hi\u1ec7n c\u00e1c ph\u00e9p t\u00ednh<\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> $\\begin{align*} & 36 : 3^2 + 60 : 12 - 100 : 5^2 \\\\ =& 36 : 9 + 60 : 12 - 100 : 25 \\\\ =& 4 + 5 - 4 \\\\ =& 5 \\end{align*}$ <br\/> V\u1eady kh\u1eb3ng \u0111\u1ecbnh '' $ 36 : 3^2 + 60 : 12 - 100 : 5^2 = 5$'' l\u00e0 <b> \u0110\u00daNG <\/b> <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: A<\/span> ","column":2}]}],"id_ques":382},{"time":24,"part":[{"title":"\u0110i\u1ec1n t\u1eeb th\u00edch h\u1ee3p v\u00e0o ch\u1ed7 tr\u1ed1ng","title_trans":"","temp":"fill_the_blank","correct":[[["5"]]],"list":[{"point":5,"width":50,"content":"","type_input":"","ques":"H\u00e3y \u0111i\u1ec1n s\u1ed1 th\u00edch h\u1ee3p v\u00e0o \u00f4 tr\u1ed1ng. <br\/> 80 . 60 : _input_ = 960 ","hint":"S\u1ed1 c\u1ea7n t\u00ecm l\u00e0 s\u1ed1 chia ch\u01b0a bi\u1ebft, mu\u1ed1n t\u00ecm s\u1ed1 chia ch\u01b0a bi\u1ebft ta l\u1ea5y s\u1ed1 b\u1ecb chia chia cho th\u01b0\u01a1ng","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> <b> B\u01b0\u1edbc 1: <\/b> T\u00ednh 80 . 60 = ?<br\/> <b> B\u01b0\u1edbc 2: <\/b> \u00d4 tr\u1ed1ng c\u1ea7n \u0111i\u1ec1n l\u00e0 s\u1ed1 chia ch\u01b0a bi\u1ebft <br\/> Mu\u1ed1n t\u00ecm s\u1ed1 chia ch\u01b0a bi\u1ebft ta l\u1ea5y s\u1ed1 b\u1ecb chia chia cho th\u01b0\u01a1ng <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/> Ta c\u00f3: <br\/> $\\begin{align*} 80 . 60 : ? &= 960 \\\\ 4800 : ? &= 960 \\\\ ? &= 4800 : 960 \\\\ ? &= 5 \\end{align*}$ <br\/> <span class='basic_pink'> V\u1eady s\u1ed1 c\u1ea7n \u0111i\u1ec1n l\u00e0: 5 <\/span>"}]}],"id_ques":383},{"time":24,"part":[{"title":"\u0110i\u1ec1n t\u1eeb th\u00edch h\u1ee3p v\u00e0o ch\u1ed7 tr\u1ed1ng","title_trans":"","temp":"fill_the_blank","correct":[[["7"]]],"list":[{"point":5,"width":50,"content":"","type_input":"","ques":"H\u00e3y \u0111i\u1ec1n s\u1ed1 th\u00edch h\u1ee3p v\u00e0o \u00f4 tr\u1ed1ng. <br\/> _input_ . 85 : 5 = 119 ","hint":"S\u1ed1 c\u1ea7n t\u00ecm l\u00e0 th\u1eeba s\u1ed1 ch\u01b0a bi\u1ebft, mu\u1ed1n t\u00ecmth\u1eeba s\u1ed1 ch\u01b0a bi\u1ebft ta l\u1ea5y t\u00edch chia cho th\u1eeba s\u1ed1 \u0111\u00e3 bi\u1ebft","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> <b> B\u01b0\u1edbc 1: <\/b> Coi a . 85 l\u00e0 s\u1ed1 b\u1ecb chia ch\u01b0a bi\u1ebft <br\/> Mu\u1ed1n t\u00ecm s\u1ed1 b\u1ecb chia ta l\u1ea5y th\u01b0\u01a1ng nh\u00e2n v\u1edbi s\u1ed1 chia<br\/> <b> B\u01b0\u1edbc 2: <\/b>a l\u00e0 th\u1eeba s\u1ed1 ch\u01b0a bi\u1ebft <br\/> Mu\u1ed1n t\u00ecm th\u1eeba s\u1ed1 ch\u01b0a bi\u1ebft ta l\u1ea5y t\u00edch chia cho th\u1eeba s\u1ed1 \u0111\u00e3 bi\u1ebft <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/> G\u1ecdi s\u1ed1 c\u1ea7n t\u00ecm l\u00e0 a, ta c\u00f3: <br\/> $\\begin{align*} a . 85 : 5 &= 119 \\\\ a . 85 &= 119 . 5 \\\\ a . 85 &= 595 \\\\ a &= 595 : 85 \\\\ a &= 7 \\end{align*}$ <br\/> <span class='basic_pink'> V\u1eady s\u1ed1 c\u1ea7n \u0111i\u1ec1n l\u00e0: 7 <\/span>"}]}],"id_ques":384},{"time":24,"part":[{"title":"\u0110i\u1ec1n t\u1eeb th\u00edch h\u1ee3p v\u00e0o ch\u1ed7 tr\u1ed1ng","title_trans":"","temp":"fill_the_blank","correct":[[["6"]]],"list":[{"point":5,"width":50,"content":"","type_input":"","ques":"H\u00e3y \u0111i\u1ec1n s\u1ed1 th\u00edch h\u1ee3p v\u00e0o \u00f4 tr\u1ed1ng. <br\/> _input_ . 320 + 450 - 40 = 2330 ","hint":"S\u1ed1 c\u1ea7n t\u00ecm l\u00e0 th\u1eeba s\u1ed1 ch\u01b0a bi\u1ebft, mu\u1ed1n t\u00ecm th\u1eeba s\u1ed1 ch\u01b0a bi\u1ebft ta l\u1ea5y t\u00edch chia cho th\u1eeba s\u1ed1 \u0111\u00e3 bi\u1ebft","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> <b> B\u01b0\u1edbc 1: <\/b> Coi ? . 320 l\u00e0 s\u1ed1 h\u1ea1ng ch\u01b0a bi\u1ebft <br\/> Mu\u1ed1n t\u00ecm s\u1ed1 h\u1ea1ng ch\u01b0a bi\u1ebft ta l\u1ea5y t\u1ed5ng tr\u1eeb \u0111i s\u1ed1 h\u1ea1ng \u0111\u00e3 bi\u1ebft <br\/> <b> B\u01b0\u1edbc 2: <\/b> ? l\u00e0 th\u1eeba s\u1ed1 ch\u01b0a bi\u1ebft <br\/> Mu\u1ed1n t\u00ecm th\u1eeba s\u1ed1 ch\u01b0a bi\u1ebft ta l\u1ea5y t\u00edch chia cho th\u1eeba s\u1ed1 \u0111\u00e3 bi\u1ebft <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/> Ta c\u00f3: <br\/> $\\begin{align*} ? . 320 + 450 - 40 &= 2330 \\\\ ? . 320 + 410 &= 2330 \\\\ ? . 320 &= 2330 - 410 \\\\ ? . 320 &= 1920 \\\\ ? &= 1920 : 320 \\\\ ? &= 6 \\end{align*}$ <br\/> <span class='basic_pink'> V\u1eady s\u1ed1 c\u1ea7n \u0111i\u1ec1n l\u00e0: 6 <\/span>"}]}],"id_ques":385},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":" Cho hai bi\u1ec3u th\u1ee9c: <br\/> $A = 120 : 6 + 4 . 3^2$ <br\/> $B = 120 : (6 + 4) . 2^2$ <br\/> Kh\u1eb3ng \u0111\u1ecbnh n\u00e0o sau \u0111\u00e2y \u0111\u00fang?","select":["A = B ","A > B ","A < B "],"hint":"Ta t\u00ednh gi\u00e1 tr\u1ecb c\u1ee7a t\u1eebng bi\u1ec3u th\u1ee9c theo th\u1ee9 t\u1ef1 th\u1ef1c hi\u1ec7n c\u00e1c ph\u00e9p t\u00ednh r\u1ed3i so s\u00e1nh","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/>TH\u1ee8 T\u1ef0 TH\u1ef0C HI\u1ec6N C\u00c1C PH\u00c9P T\u00cdNH: <\/b> <br\/> 1. Th\u1ee9 t\u1ef1 th\u1ef1c hi\u1ec7n c\u00e1c ph\u00e9p t\u00ednh \u0111\u1ed1i v\u1edbi bi\u1ec3u th\u1ee9c kh\u00f4ng c\u00f3 d\u1ea5u ngo\u1eb7c: <br\/> L\u0169y th\u1eeba -> Nh\u00e2n v\u00e0 chia -> C\u1ed9ng v\u00e0 tr\u1eeb <br\/> 2. Th\u1ee9 t\u1ef1 th\u1ef1c hi\u1ec7n c\u00e1c ph\u00e9p t\u00ednh \u0111\u1ed1i v\u1edbi bi\u1ec3u th\u1ee9c c\u00f3 d\u1ea5u ngo\u1eb7c: <br\/> () -> [] -> {} <br\/> <b> B\u01b0\u1edbc 1: <\/b> T\u00ednh gi\u00e1 tr\u1ecb bi\u1ec3u th\u1ee9c A v\u00e0 B theo th\u1ee9 t\u1ef1 th\u1ef1c hi\u1ec7n c\u00e1c ph\u00e9p t\u00ednh <br\/> <b> B\u01b0\u1edbc 2: <\/b> So s\u00e1nh v\u00e0 ch\u1ecdn \u0111\u00e1p \u00e1n<\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> Ta c\u00f3: <br\/> $\\begin{align*} A &= 120 : 6 + 4 . 3^2 \\\\ &= 120 : 6 + 4 . 9 \\\\ &= 20 + 36 \\\\ &= 56 \\end{align*}$ <br\/> $\\begin{align*} B &= 120 : (6 + 4) . 2^2 \\\\ &= 120 : 10 . 4 \\\\ &= 12 . 4 \\\\ &= 48 \\end{align*}$ <br\/>V\u00ec 56 > 48 n\u00ean A > B <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: A > B<\/span> ","column":3}]}],"id_ques":386},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":" Cho hai bi\u1ec3u th\u1ee9c: <br\/> $A = 45 + 15 . 13 - 3 . 2^2$ <br\/> $B = 120 - 45 . 3 + 2.3^2$ <br\/> Kh\u1eb3ng \u0111\u1ecbnh n\u00e0o sau \u0111\u00e2y \u0111\u00fang?","select":["A = B ","A > B ","A < B "],"hint":"Ta t\u00ednh gi\u00e1 tr\u1ecb c\u1ee7a t\u1eebng bi\u1ec3u th\u1ee9c theo th\u1ee9 t\u1ef1 th\u1ef1c hi\u1ec7n c\u00e1c ph\u00e9p t\u00ednh r\u1ed3i so s\u00e1nh","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/>TH\u1ee8 T\u1ef0 TH\u1ef0C HI\u1ec6N C\u00c1C PH\u00c9P T\u00cdNH: <\/b> <br\/> 1. Th\u1ee9 t\u1ef1 th\u1ef1c hi\u1ec7n c\u00e1c ph\u00e9p t\u00ednh \u0111\u1ed1i v\u1edbi bi\u1ec3u th\u1ee9c kh\u00f4ng c\u00f3 d\u1ea5u ngo\u1eb7c: <br\/> L\u0169y th\u1eeba -> Nh\u00e2n v\u00e0 chia -> C\u1ed9ng v\u00e0 tr\u1eeb <br\/> 2. Th\u1ee9 t\u1ef1 th\u1ef1c hi\u1ec7n c\u00e1c ph\u00e9p t\u00ednh \u0111\u1ed1i v\u1edbi bi\u1ec3u th\u1ee9c c\u00f3 d\u1ea5u ngo\u1eb7c: <br\/> () -> [] -> {} <br\/> <b> B\u01b0\u1edbc 1: <\/b> T\u00ednh gi\u00e1 tr\u1ecb bi\u1ec3u th\u1ee9c A v\u00e0 B theo th\u1ee9 t\u1ef1 th\u1ef1c hi\u1ec7n c\u00e1c ph\u00e9p t\u00ednh <br\/> <b>B\u01b0\u1edbc 2: <\/b> So s\u00e1nh v\u00e0 ch\u1ecdn \u0111\u00e1p \u00e1n<\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> Ta c\u00f3: <br\/> $\\begin{align*} A &= 45 + 15 . 13 - 3 . 2^2 \\\\ &= 45 + 15 . 13 - 3 . 4 \\\\ &= 45 + 195 - 12 \\\\ &= 228 \\end{align*}$ <br\/> $\\begin{align*} B &= 120 - 45 . 3 + 2.3^2 \\\\ &= 120 - 45 . 3 + 2 . 9 \\\\ &= 120 - 135 + 18 \\\\ &= 3 \\end{align*}$ <br\/>V\u00ec 228 > 3 n\u00ean A > B <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: A > B<\/span> ","column":3}]}],"id_ques":387},{"time":24,"part":[{"title":"\u0110i\u1ec1n t\u1eeb th\u00edch h\u1ee3p v\u00e0o ch\u1ed7 tr\u1ed1ng","title_trans":"","temp":"fill_the_blank","correct":[[["400"]]],"list":[{"point":5,"width":50,"content":"","type_input":"","ques":"H\u00e3y t\u00ecm s\u1ed1 c\u00f3 3 ch\u1eef s\u1ed1 bi\u1ebft r\u1eb1ng khi vi\u1ebft th\u00eam v\u00e0o b\u00ean tr\u00e1i s\u1ed1 \u0111\u00f3 s\u1ed1 32 th\u00ec s\u1ed1 \u0111\u00f3 s\u1ebd t\u0103ng l\u00ean 81 l\u1ea7n. <br\/> S\u1ed1 c\u1ea7n t\u00ecm l\u00e0: _input_ ","hint":"G\u1ecdi s\u1ed1 c\u1ea7n t\u00ecm l\u00e0 $\\overline{abc}$ khi vi\u1ebft th\u00eam s\u1ed1 32 v\u00e0o b\u00ean tr\u00e1i s\u1ed1 \u0111\u00f3 th\u00ec ta \u0111\u01b0\u1ee3c s\u1ed1 m\u1edbi l\u00e0 $\\overline{32abc}$ ","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> <b> B\u01b0\u1edbc 1: <\/b> G\u1ecdi s\u1ed1 c\u00f3 3 ch\u1eef s\u1ed1 l\u00e0 $\\overline{abc}$ <br\/> <b> B\u01b0\u1edbc 2: <\/b> Sau khi vi\u1ebft th\u00eam s\u1ed1 32 v\u00e0o b\u00ean tr\u00e1i s\u1ed1 \u0111\u00f3 ta \u0111\u01b0\u1ee3c s\u1ed1 m\u1edbi l\u00e0 $\\overline{32abc}$ <br\/> Ph\u00e2n t\u00edch s\u1ed1 m\u1edbi theo c\u1ea5u t\u1ea1o s\u1ed1, d\u1ef1a v\u00e0o d\u1eef li\u1ec7u \u0111\u1ec1 b\u00e0o \u0111\u1ec3 t\u00ecm s\u1ed1 \u0111\u00f3 <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/> G\u1ecdi s\u1ed1 c\u00f3 3 ch\u1eef s\u1ed1 l\u00e0 $\\overline{abc}; 0 < a \\leq 9; 0 \\leq b \\leq 9; 0 \\leq c \\leq 9$ <br\/> Sau khi vi\u1ebft th\u00eam s\u1ed1 32 v\u00e0o b\u00ean tr\u00e1i s\u1ed1 \u0111\u00f3 ta \u0111\u01b0\u1ee3c s\u1ed1 m\u1edbi l\u00e0 $\\overline{32abc}$ <br\/> Theo b\u00e0i ra ta c\u00f3: <br\/> $\\begin{align*} \\overline{32abc} &= 81 . \\overline{abc} \\\\ 32 000 + \\overline{abc} &= 81 . \\overline{abc} \\\\ 32000 &= 81 . \\overline{abc} - \\overline{abc} \\\\ 32000 &= 80 . \\overline{abc} \\\\ \\overline{abc} &= 32000 : 80 \\\\ \\overline{abc} &= 400 \\end{align*}$ <br\/> <span class='basic_pink'> V\u1eady s\u1ed1 c\u1ea7n \u0111i\u1ec1n l\u00e0: 400 <\/span>"}]}],"id_ques":388},{"time":24,"part":[{"title":"\u0110i\u1ec1n t\u1eeb th\u00edch h\u1ee3p v\u00e0o ch\u1ed7 tr\u1ed1ng","title_trans":"","temp":"fill_the_blank","correct":[[["360"]]],"list":[{"point":5,"width":50,"content":"","type_input":"","ques":"H\u00e3y t\u00ecm s\u1ed1 c\u00f3 3 ch\u1eef s\u1ed1 bi\u1ebft r\u1eb1ng khi vi\u1ebft th\u00eam ch\u1eef s\u1ed1 9 v\u00e0o b\u00ean tr\u00e1i s\u1ed1 \u0111\u00f3 ta \u0111\u01b0\u1ee3c m\u1ed9t s\u1ed1 g\u1ea5p 26 l\u1ea7n s\u1ed1 c\u1ea7n t\u00ecm. <br\/> S\u1ed1 c\u1ea7n t\u00ecm l\u00e0: _input_ ","hint":"G\u1ecdi s\u1ed1 c\u1ea7n t\u00ecm l\u00e0 $\\overline{abc}$ khi vi\u1ebft th\u00eam ch\u1eef s\u1ed1 9 v\u00e0o b\u00ean tr\u00e1i s\u1ed1 \u0111\u00f3 th\u00ec ta \u0111\u01b0\u1ee3c s\u1ed1 m\u1edbi l\u00e0 $\\overline{9abc}$ ","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> <b> B\u01b0\u1edbc 1: <\/b> G\u1ecdi s\u1ed1 c\u00f3 3 ch\u1eef s\u1ed1 l\u00e0 $\\overline{abc}$ <br\/> <b> B\u01b0\u1edbc 2: <\/b> Sau khi vi\u1ebft th\u00eam s\u1ed1 ch\u1eef s\u1ed1 9 v\u00e0o b\u00ean tr\u00e1i s\u1ed1 \u0111\u00f3 ta \u0111\u01b0\u1ee3c s\u1ed1 m\u1edbi l\u00e0 $\\overline{9abc}$ <br\/> Ph\u00e2n t\u00edch s\u1ed1 m\u1edbi theo c\u1ea5u t\u1ea1o s\u1ed1, d\u1ef1a v\u00e0o d\u1eef li\u1ec7u \u0111\u1ec1 b\u00e0o \u0111\u1ec3 t\u00ecm s\u1ed1 \u0111\u00f3 <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/> G\u1ecdi s\u1ed1 c\u00f3 3 ch\u1eef s\u1ed1 l\u00e0 $\\overline{abc}; 0 < a \\leq 9; 0 \\leq b \\leq 9; 0 \\leq c \\leq 9$ <br\/> Sau khi vi\u1ebft th\u00eam ch\u1eef s\u1ed1 9 v\u00e0o b\u00ean tr\u00e1i s\u1ed1 \u0111\u00f3 ta \u0111\u01b0\u1ee3c s\u1ed1 m\u1edbi l\u00e0 $\\overline{9abc}$ <br\/> Theo b\u00e0i ra ta c\u00f3: <br\/> $\\begin{align*} \\overline{9abc} &= 26 . \\overline{abc} \\\\ 9000 + \\overline{abc} &= 26 . \\overline{abc} \\\\ 9000 &= 26 . \\overline{abc} - \\overline{abc} \\\\ 9000 &= 25 . \\overline{abc} \\\\ \\overline{abc} &= 9000 : 25 \\\\ \\overline{abc} &= 360 \\end{align*}$ <br\/> <span class='basic_pink'> V\u1eady s\u1ed1 c\u1ea7n \u0111i\u1ec1n l\u00e0: 360 <\/span>"}]}],"id_ques":389},{"time":24,"part":[{"title":"\u0110i\u1ec1n t\u1eeb th\u00edch h\u1ee3p v\u00e0o ch\u1ed7 tr\u1ed1ng","title_trans":"","temp":"fill_the_blank","correct":[[["750"]]],"list":[{"point":5,"width":50,"content":"","type_input":"","ques":"H\u00e3y t\u00ecm s\u1ed1 c\u00f3 3 ch\u1eef s\u1ed1 bi\u1ebft r\u1eb1ng khi vi\u1ebft th\u00eam ch\u1eef s\u1ed1 3 v\u00e0o b\u00ean tr\u00e1i s\u1ed1 \u0111\u00f3 ta \u0111\u01b0\u1ee3c m\u1ed9t s\u1ed1 g\u1ea5p 5 l\u1ea7n s\u1ed1 c\u1ea7n t\u00ecm. <br\/> S\u1ed1 c\u1ea7n t\u00ecm l\u00e0:_input_ ","hint":"G\u1ecdi s\u1ed1 c\u1ea7n t\u00ecm l\u00e0 $\\overline{abc}$ khi vi\u1ebft th\u00eam ch\u1eef s\u1ed1 3 v\u00e0o b\u00ean tr\u00e1i s\u1ed1 \u0111\u00f3 th\u00ec ta \u0111\u01b0\u1ee3c s\u1ed1 m\u1edbi l\u00e0 $\\overline{3abc}$ ","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> <b> B\u01b0\u1edbc 1: <\/b> G\u1ecdi s\u1ed1 c\u00f3 3 ch\u1eef s\u1ed1 l\u00e0 $\\overline{abc}$ <br\/> <b> B\u01b0\u1edbc 2: <\/b> Sau khi vi\u1ebft th\u00eam s\u1ed1 ch\u1eef s\u1ed1 3 v\u00e0o b\u00ean tr\u00e1i s\u1ed1 \u0111\u00f3 ta \u0111\u01b0\u1ee3c s\u1ed1 m\u1edbi l\u00e0 $\\overline{3abc}$ <br\/> Ph\u00e2n t\u00edch s\u1ed1 m\u1edbi theo c\u1ea5u t\u1ea1o s\u1ed1, d\u1ef1a v\u00e0o d\u1eef li\u1ec7u \u0111\u1ec1 b\u00e0o \u0111\u1ec3 t\u00ecm s\u1ed1 \u0111\u00f3 <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/> G\u1ecdi s\u1ed1 c\u00f3 3 ch\u1eef s\u1ed1 l\u00e0 $\\overline{abc}; 0 < a \\leq 9; 0 \\leq b \\leq 9; 0 \\leq c \\leq 9$ <br\/> Sau khi vi\u1ebft th\u00eam ch\u1eef s\u1ed1 3 v\u00e0o b\u00ean tr\u00e1i s\u1ed1 \u0111\u00f3 ta \u0111\u01b0\u1ee3c s\u1ed1 m\u1edbi l\u00e0 $\\overline{3abc}$ <br\/> Theo b\u00e0i ra ta c\u00f3: <br\/> $\\begin{align*} \\overline{3abc} &= 5 . \\overline{abc} \\\\ 3000 + \\overline{abc} &= 5 . \\overline{abc} \\\\ 3000 &= 5 . \\overline{abc} - \\overline{abc} \\\\ 3000 &= 4 . \\overline{abc} \\\\ \\overline{abc} &= 3000 : 4 \\\\ \\overline{abc} &= 750 \\end{align*}$ <br\/> <span class='basic_pink'> V\u1eady s\u1ed1 c\u1ea7n \u0111i\u1ec1n l\u00e0: 750 <\/span>"}]}],"id_ques":390}],"lesson":{"save":0,"level":2}}