{"segment":[{"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":[[["300"]]],"list":[{"point":10,"width":50,"content":"","type_input":"","ques":"T\u00ednh. <br\/> <center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai8/lv3/img\/11.jpg' \/><\/center> <br\/> $181 + 87 : 29 - 7 . 12 + 2^3 . 5^2$ = _input_","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\u1ef1a 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\/> Ta c\u00f3: <br\/> $\\begin{align*} & 181 + 87 : 29 - 7 . 12 + 2^3 . 5^2 \\\\ =& 181 + 87 : 29 - 7 . 12 + 8 . 25 \\\\ =& 181 + 3 - 84 + 200 \\\\ =& 184 - 84 + 200 \\\\ =& 100 + 200 \\\\ =& 300 \\end{align*}$ <br\/> <span class='basic_pink'> V\u1eady s\u1ed1 c\u1ea7n \u0111i\u1ec1n l\u00e0: 300 <\/span>"}]}],"id_ques":391},{"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":[[["93"]]],"list":[{"point":10,"width":80,"content":"","type_input":"","ques":"T\u00ednh. <br\/> <center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai8/lv3/img\/11.jpg' \/><\/center> <br\/> $3. \\left\\{ 15 + 2 . [10 - (3^2 . 2 - 4^2)] \\right\\} $ = _input_ ","hint":"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\u1ef1a 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\/> Ta c\u00f3: <br\/> $\\begin{align*} & 3. \\left\\{ 15 + 2 . [10 - (3^2 . 2 - 4^2)] \\right\\} \\\\ =& 3 . \\left\\{15 + 2 . [10 - (9 . 2 -16)]\\right\\} \\\\ =& 3 . \\left\\{ 15 + 2.[10 - (18 - 16)]\\right\\} \\\\ =& 3.\\left\\{ 15 + 2.[10 - 2]\\right\\} \\\\ =& 3 . \\left\\{ 15 + 2.8\\right\\} \\\\ =& 3 . \\left\\{ 15 + 16 \\right\\} \\\\ =& 3 . 31 \\\\ =& 93 \\end{align*}$ <br\/> <span class='basic_pink'> V\u1eady s\u1ed1 c\u1ea7n \u0111i\u1ec1n l\u00e0: 93 <\/span>"}]}],"id_ques":392},{"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":[[["75"]]],"list":[{"point":10,"width":50,"content":"","type_input":"","ques":"T\u00ecm x bi\u1ebft: $293 - 2^3.3^3 + x : 25 = 80$ <br\/> V\u1eady x = _input_ ","hint":"T\u00ednh l\u0169y th\u1eeba tr\u01b0\u1edbc r\u1ed3i t\u00ecm x nh\u01b0 th\u00f4ng th\u01b0\u1eddng","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> <b> B\u01b0\u1edbc 1: <\/b> T\u00ednh c\u00e1c l\u0169y th\u1eeba tr\u01b0\u1edbc <br\/> <b> B\u01b0\u1edbc 2: <\/b> Coi x : 25 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> Bi\u1ebfn \u0111\u1ed5i v\u00e0 t\u00ecm x <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/> Ta c\u00f3: <br\/> $\\begin{align*} 293 - 2^3.3^3 + x : 25 &= 80 \\\\ 293 - 8. 27 + x : 25 &= 80 \\\\ 293 - 216 + x : 25 &= 80 \\\\ 77 + x : 25 &= 80 \\\\ x : 25 &= 80 - 77 \\\\ x : 25 &= 3 \\\\ x&= 3 . 25 \\\\ x &= 75 \\end{align*}$ <br\/> <span class='basic_pink'> V\u1eady s\u1ed1 c\u1ea7n \u0111i\u1ec1n l\u00e0: 75 <\/span>"}]}],"id_ques":393},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":10,"ques":" <center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai8/lv3/img\/8.jpg' \/><\/center> <br\/> K\u1ebft qu\u1ea3 c\u1ee7a ph\u00e9p t\u00ednh $2345 - 1000 : [19 - 2 . (21 - 18)^2]$ l\u00e0:","select":["A. 1345 ","B. 1354 ","C. 1534 ","D. 1543 "],"hint":"T\u00ednh gi\u00e1 tr\u1ecb c\u1ee7a bi\u1ec3u th\u1ee9c 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\u1ef1a 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\/> Ta c\u00f3: <br\/> $\\begin{align*} & 2345 - 1000 : [19 - 2 . (21 - 18)^2 \\\\ &= 2345 - 1000 : [19 - 2 . 3^2] \\\\ &= 2345 - 1000 : [19 - 2.9] \\\\ &= 2345 - 1000 : [19 - 18] \\\\ &= 2345 - 1000 : 1 \\\\ &= 1345 \\end{align*}$ <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: A. 1345 <\/span> ","column":2}]}],"id_ques":394},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":10,"ques":" <center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai8/lv3/img\/8.jpg' \/><\/center> <br\/> K\u1ebft qu\u1ea3 c\u1ee7a ph\u00e9p t\u00ednh $107 - [38 + (7 . 3^2 - 4 + 2^3)] : 15 l\u00e0: $","select":["A. 104 ","B. 107 ","C. 100 ","D. 102 "],"hint":"T\u00ednh gi\u00e1 tr\u1ecb c\u1ee7a bi\u1ec3u th\u1ee9c 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\u1ef1a 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\/> Ta c\u00f3: <br\/> $\\begin{align*} & 107 - [38 + (7 . 3^2 - 4 + 2^3)] : 15 \\\\ &= 107 - [38 + (7 . 9 - 4 + 8)] : 15 \\\\ &= 107 - [38 + (63 - 4 + 8)] : 15 \\\\ &= 107 - [38 + 67] : 15 \\\\ &= 107 - 105 : 15 \\\\ &= 107 - 7 \\\\ &= 100 \\end{align*}$ <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: C. 100 <\/span> ","column":2}]}],"id_ques":395},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":10,"ques":" <center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai8/lv3/img\/7.jpg' \/><\/center> <br\/> $2010 - 2000 : [486 - 2.(7^2 - 6)] = 2005 $ <b> \u0110\u00daNG <\/b> hay <b> SAI <\/b>?","select":["A. \u0110\u00daNG ","B. SAI "],"hint":"T\u00ednh gi\u00e1 tr\u1ecb c\u1ee7a bi\u1ec3u th\u1ee9c 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\u1ef1a 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\/> Ta c\u00f3: <br\/> $\\begin{align*} & 2010 - 2000 : [486 - 2.(7^2 - 6)] \\\\ &= 2010 - 2000 : [486 - 2. (49 - 6)] \\\\ &= 2010 - 2000 : [486 - 2.43] \\\\ &= 2010 - 2000 : [486 - 86] \\\\ &= 2010 - 2000 : 400 \\\\ &= 2010 - 5 \\\\ &= 2005 \\end{align*}$ <br\/> N\u00ean kh\u1eb3ng \u0111\u1ecbnh ''$2010 - 2000 : [486 - 2.(7^2 - 6)] = 2005 $'' 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":396},{"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":[[["492"]]],"list":[{"point":10,"width":80,"content":"","type_input":"","ques":"M\u1ed9t quy\u1ec3n s\u00e1ch c\u00f3 200 trang. \u0110\u1ec3 \u0111\u00e1nh s\u1ed1 trang c\u1ee7a quy\u1ec3n s\u00e1ch n\u00e0y t\u1eeb 1 \u0111\u1ebfn 200 c\u1ea7n d\u00f9ng t\u1ea5t c\u1ea3 bao nhi\u00eau ch\u1eef s\u1ed1? <br\/> \u0110\u00e1p \u00e1n l\u00e0: _input_ ch\u1eef s\u1ed1","hint":"T\u00ednh s\u1ed1 ch\u1eef s\u1ed1 \u0111\u1ec3 \u0111\u00e1nh c\u00e1c trang c\u00f3 1 ch\u1eef s\u1ed1, c\u00f3 hai ch\u1eef s\u1ed1, c\u00f3 3 ch\u1eef s\u1ed1","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> <b> B\u01b0\u1edbc 1: <\/b> T\u00ednh s\u1ed1 ch\u1eef s\u1ed1 \u0111\u1ec3 \u0111\u00e1nh s\u1ed1 trang c\u00f3 m\u1ed9t ch\u1eef s\u1ed1 <br\/> <b> B\u01b0\u1edbc 2: <\/b> T\u00ednh s\u1ed1 ch\u1eef s\u1ed1 \u0111\u1ec3 \u0111\u00e1nh c\u00e1c trang c\u00f3 hai ch\u1eef s\u1ed1 (t\u1eeb trang 10 \u0111\u1ebfn trang 99) <br\/> <b> B\u01b0\u1edbc 3: <\/b> T\u00ednh s\u1ed1 ch\u1eef s\u1ed1 \u0111\u1ec3 \u0111\u00e1nh c\u00e1c trang c\u00f3 3 ch\u1eef s\u1ed1 (t\u1eeb 100 \u0111\u1ebfn 200) <br\/> <b> B\u01b0\u1edbc 4: <\/b> C\u1ed9ng c\u00e1c s\u1ed1 s\u1ed1 ch\u1eef s\u1ed1 l\u1ea1i <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/> S\u1ed1 ch\u1eef s\u1ed1 \u0111\u1ec3 \u0111\u00e1nh c\u00e1c trang t\u1eeb trang 1 \u0111\u1ebfn trang 9: <br\/> 1 . 9 = 9 (ch\u1eef s\u1ed1) <br\/> C\u00f3 s\u1ed1 trang c\u00f3 hai ch\u1eef s\u1ed1 (trang 10 \u0111\u1ebfn trang 99) l\u00e0:<br\/> 99 - 10 + 1 = 90 (trang) <br\/> S\u1ed1 ch\u1eef s\u1ed1 \u0111\u1ec3 \u0111\u00e1nh c\u00e1c trang t\u1eeb trang 10 \u0111\u1ebfn trang 99: <br\/> 90 x 2 = 180 (ch\u1eef s\u1ed1)<br\/> S\u1ed1 trang c\u00f3 3 ch\u1eef s\u1ed1 (trang 100 \u0111\u1ebfn trang 200) l\u00e0: <br\/> 200 - 100 + 1 = 101 (trang) <br\/> S\u1ed1 ch\u1eef s\u1ed1 \u0111\u1ec3 \u0111\u00e1nh c\u00e1c trang t\u1eeb trang 100 \u0111\u1ebfn trang 200 l\u00e0: <br\/> 101 . 3 = 303 (ch\u1eef s\u1ed1) <br\/> S\u1ed1 ch\u1eef s\u1ed1 \u0111\u1ec3 \u0111\u00e1nh s\u1ed1 trang c\u1ee7a quy\u1ec3n s\u00e1ch l\u00e0: <br\/> 9 + 180 + 303 = 492 (ch\u1eef s\u1ed1) <br\/> <span class='basic_pink'> V\u1eady s\u1ed1 c\u1ea7n \u0111i\u1ec1n l\u00e0: 492 <\/span>"}]}],"id_ques":397},{"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":[[["336"]]],"list":[{"point":10,"width":80,"content":"","type_input":"","ques":"\u0110\u1ec3 \u0111\u00e1nh s\u1ed1 trang 1 quy\u1ec3n s\u00e1ch ng\u01b0\u1eddi ta ph\u1ea3i d\u00f9ng t\u1ea5t c\u1ea3 900 ch\u1eef s\u1ed1. H\u1ecfi quy\u1ec3n s\u00e1ch c\u00f3 bao nhi\u00eau trang?<br\/> \u0110\u00e1p \u00e1n l\u00e0: _input_ trang","hint":"T\u00ednh s\u1ed1 trang c\u00f3 1 ch\u1eef s\u1ed1, c\u00f3 hai ch\u1eef s\u1ed1, c\u00f3 3 ch\u1eef s\u1ed1","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> <b> B\u01b0\u1edbc 1: <\/b> T\u00ednh s\u1ed1 trang c\u00f3 m\u1ed9t ch\u1eef s\u1ed1 <br\/> S\u1ed1 ch\u1eef s\u1ed1 \u0111\u1ec3 \u0111\u00e1nh s\u1ed1 trang c\u00f3 m\u1ed9t ch\u1eef s\u1ed1 <br\/> <b> B\u01b0\u1edbc 2: <\/b> T\u00ednh s\u1ed1 trang c\u00f3 hai ch\u1eef s\u1ed1 <br\/> T\u00ednh s\u1ed1 ch\u1eef s\u1ed1 c\u1ea7n d\u00f9ng \u0111\u1ec3 \u0111\u00e1nh c\u00e1c trang c\u00f3 hai ch\u1eef s\u1ed1 <br\/> <b> B\u01b0\u1edbc 3: <\/b> T\u00ednh s\u1ed1 ch\u1eef s\u1ed1 c\u00f2n l\u1ea1i sau khi \u0111\u00e1nh c\u00e1c trang c\u00f3 1 ch\u1eef s\u1ed1 v\u00e0 hai ch\u1eef s\u1ed1 <br\/> S\u1ed1 ch\u1eef s\u1ed1 c\u00f2n l\u1ea1i n\u00e0y ch\u00ednh l\u00e0 s\u1ed1 ch\u1eef s\u1ed1 d\u00f9ng \u0111\u00e1nh c\u00e1c trang c\u00f3 3 ch\u1eef s\u1ed1 <br\/> <b> B\u01b0\u1edbc 4: <\/b> T\u00ednh s\u1ed1 trang c\u00f3 3 ch\u1eef s\u1ed1 v\u00e0 t\u00ednh s\u1ed1 trang c\u1ee7a quy\u1ec3n s\u00e1ch<\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/> S\u1ed1 ch\u1eef s\u1ed1 \u0111\u1ec3 \u0111\u00e1nh c\u00e1c trang t\u1eeb trang 1 \u0111\u1ebfn trang 9: <br\/> 1 . 9 = 9 (ch\u1eef s\u1ed1) <br\/> C\u00f3 s\u1ed1 trang c\u00f3 hai ch\u1eef s\u1ed1 (trang 10 \u0111\u1ebfn trang 99) l\u00e0:<br\/> 99 - 10 + 1 = 90 (trang) <br\/>S\u1ed1 ch\u1eef s\u1ed1 c\u1ea7n d\u00f9ng \u0111\u1ec3 \u0111\u00e1nh s\u1ed1 trang t\u1eeb 10 \u0111\u1ebfn trang 99: <br\/> 90 x 2 = 180 (ch\u1eef s\u1ed1)<br\/> Sau khi \u0111\u00e1nh c\u00e1c trang c\u00f3 m\u1ed9t ch\u1eef s\u1ed1 v\u00e0 hai ch\u1eef s\u1ed1 th\u00ec c\u00f2n l\u1ea1i s\u1ed1 ch\u1eef s\u1ed1 l\u00e0: <br\/> 900 - 9 - 180 = 711 <br\/> S\u1ed1 trang c\u00f3 3 ch\u1eef s\u1ed1 l\u00e0: <br\/> 711 : 3 = 237 (trang) <br\/> S\u1ed1 trang c\u1ee7a quy\u1ec3n s\u00e1ch l\u00e0: 9 + 90 + 237 = 336 (trang) <br\/> <span class='basic_pink'> V\u1eady s\u1ed1 c\u1ea7n \u0111i\u1ec1n l\u00e0: 336 <\/span>"}]}],"id_ques":398},{"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":[[["1500"]]],"list":[{"point":10,"width":80,"content":"","type_input":"","ques":"H\u00e3y \u0111i\u1ec1n s\u1ed1 th\u00edch h\u1ee3p v\u00e0o \u00f4 tr\u1ed1ng <br\/> 134 - {_input_ : 50 - [120 : 4 + 25 - (12 + 18)]} = 129","hint":"Bi\u1ebfn \u0111\u1ed5i l\u1ea7n l\u01b0\u1ee3t theo th\u1ee9 t\u1ef1: () -> [] -> {}","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> <b> B\u01b0\u1edbc 1: <\/b> T\u00ednh gi\u00e1 tr\u1ecb bi\u1ec3u th\u1ee9c trong ngo\u1eb7c () -> [] <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\/> S\u1ed1 tr\u1eeb b\u1eb1ng s\u1ed1 b\u1ecb tr\u1eeb tr\u1eeb \u0111i hi\u1ec7u <br\/> <b> B\u01b0\u1edbc 3: <\/b> S\u1ed1 c\u1ea7n t\u00ecm gi\u1eefa vai tr\u00f2 l\u00e0 s\u1ed1 b\u1ecb chia <br\/> S\u1ed1 b\u1ecb chia b\u1eb1ng th\u01b0\u01a1ng nh\u00e2n v\u1edbi s\u1ed1 chia <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/> Ta c\u00f3: <br\/> $\\begin{align*} 134 - \\left\\{ ? : 50 - [120 : 4 + 25 - (12 + 18)] \\right\\} &= 129 \\\\ 134 - \\left\\{ ? : 50 - [120 : 4 + 25 - 30] \\right\\} &= 129 \\\\ 134 - \\left\\{ ? : 50 - [30 + 25 - 30] \\right\\} &= 129 \\\\ 134 - \\left\\{ ? : 50 - [55 - 30] \\right\\} &= 129 \\\\ 134 - \\left\\{ ? : 50 - 25 \\right\\} &= 129 \\\\ ? : 50 - 25 &= 134 - 129 \\\\ ? : 50 - 25 &= 5 \\\\ ? : 50 &= 5 + 25 \\\\ ? &= 30 . 50 \\\\ ? &= 1500 \\end{align*}$ <br\/> <span class='basic_pink'> V\u1eady s\u1ed1 c\u1ea7n \u0111i\u1ec1n l\u00e0: 1500 <\/span>"}]}],"id_ques":399},{"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":[[["18"]]],"list":[{"point":10,"width":80,"content":"","type_input":"","ques":"H\u00e3y \u0111i\u1ec1n s\u1ed1 th\u00edch h\u1ee3p v\u00e0o \u00f4 tr\u1ed1ng <br\/> $[(46 - 32)^2 - (54 - 42)^2]$ . 2 . _input_ - 1872 = 0","hint":"T\u00ednh bi\u1ec3u th\u1ee9c trong ngo\u1eb7c vu\u00f4ng tr\u01b0\u1edbc","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> <b> B\u01b0\u1edbc 1: <\/b> T\u00ednh gi\u00e1 tr\u1ecb bi\u1ec3u th\u1ee9c trong ngo\u1eb7c vu\u00f4ng <br\/> <b> B\u01b0\u1edbc 2: <\/b> Coi [].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> Bi\u1ebfn \u0111\u1ed5i v\u00e0 t\u00ecm x <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/> Ta c\u00f3: <br\/> $\\begin{align*} [(46 - 32)^2 - (54 - 42)^2] . 2 . ? - 1872 &= 0 \\\\ [14^2 - 12^2] . 2 . ? - 1872 &= 0 \\\\ [196 - 144] . 2 . ? - 1872 &= 0 \\\\ 52 . 2 . ? &= 1872 \\\\ 104 . ? &= 1872 \\\\ ? &= 1872 : 104 \\\\ ? &= 18 \\end{align*}$ <br\/> <span class='basic_pink'> V\u1eady s\u1ed1 c\u1ea7n \u0111i\u1ec1n l\u00e0: 18 <\/span>"}]}],"id_ques":400}],"lesson":{"save":0,"level":3}}