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{"segment":[{"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":"H\u00e3y so s\u00e1nh c\u00e1c t\u00edch sau m\u00e0 kh\u00f4ng t\u00ednh gi\u00e1 tr\u1ecb c\u1ee5 th\u1ec3 c\u1ee7a t\u1eebng bi\u1ec3u th\u1ee9c<br\/> A = 2000 . 2000; B = 1999 . 2001","select":["A > B ","A < B ","A = B "],"hint":"\u1ede A t\u00e1ch 2000 = 1999 + 1, \u1edf B t\u00e1ch 2001 = 2000 + 1","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn: <br\/> <\/span> V\u00ec A = 2000 . 2000 , B = 1999 . 2001 nh\u1eadn th\u1ea5y ta c\u00f3 th\u1ec3 t\u00e1ch 2000 = 1999 + 1 \u1edf A v\u00e0 2001 = 2000 + 1 \u1edf B \u0111\u1ec3 \u1edf c\u1ea3 A v\u00e0 B \u0111\u1ec1u c\u00f3 t\u00edch 1999 . 2000 <br\/> <b> B\u01b0\u1edbc 1: <\/b> A = 2000 . 2000 = (1999 + 1) . 2000<br\/> D\u1ef1a v\u00e0o t\u00ednh ch\u1ea5t ph\u00e2n ph\u1ed1i c\u1ee7a ph\u00e9p nh\u00e2n \u0111\u1ed1i v\u1edbi ph\u00e9p c\u1ed9ng \u0111\u1ec3 vi\u1ebft A th\u00e0nh t\u1ed5ng<br\/> <b> B\u01b0\u1edbc 2: <\/b> B = 1999 . 2001 = 1999 . (2000 + 1) <br\/>D\u1ef1a v\u00e0o t\u00ednh ch\u1ea5t ph\u00e2n ph\u1ed1i c\u1ee7a ph\u00e9p nh\u00e2n \u0111\u1ed1i v\u1edbi ph\u00e9p c\u1ed9ng \u0111\u1ec3 vi\u1ebft B th\u00e0nh t\u1ed5ng <br\/> <b> B\u01b0\u1edbc 3: <\/b> So s\u00e1nh t\u1ed5ng A v\u00e0 t\u1ed5ng B <br\/><\/span><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> $$\\begin{align*} A &= 2000 . 2000 \\\\ A &= (1999 + 1) . 2000 \\\\ A &= 1999 . 2000 + 2000\\end{align*}$$ $\\begin{align*} B &= 1999 . 2001 \\\\ B &= 1999 . (2000 + 1) \\\\ B &= 1999 . 2000 + 1999\\end{align*}$ <br\/> V\u00ec 1999 . 2000 = 1999 . 2000 m\u00e0 2000 > 1999 <br\/> N\u00ean A = 1999 . 2000 + 2000 > B = 1999 . 2000 + 1999<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: A > B <\/span>","column":3}]}],"id_ques":191},{"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":"H\u00e3y so s\u00e1nh c\u00e1c t\u00edch sau m\u00e0 kh\u00f4ng t\u00ednh gi\u00e1 tr\u1ecb c\u1ee5 th\u1ec3 c\u1ee7a t\u1eebng bi\u1ec3u th\u1ee9c<br\/> M = 2010. 2014; N = 2012 . 2012","select":["M > N ","M = N ","M < N "],"hint":"\u1ede M t\u00e1ch 2014 = 2012 + 2, \u1edf N t\u00e1ch 2012 = 2010 + 2","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn: <br\/> <\/span> V\u00ec M = 2010 . 2014, N = 2012 . 2012 nh\u1eadn th\u1ea5y ta c\u00f3 th\u1ec3 t\u00e1ch 2014 = 2012 + 2 \u1edf M v\u00e0 2012 = 2010 + 2 \u1edf N \u0111\u1ec3 \u1edf c\u1ea3 M v\u00e0 N \u0111\u1ec1u c\u00f3 t\u00edch 2010 . 2012 <br\/> <b> B\u01b0\u1edbc 1: <\/b> M = 2010 . 2014 = 2010 . (2012 + 2) <br\/> D\u1ef1a v\u00e0o t\u00ednh ch\u1ea5t ph\u00e2n ph\u1ed1i c\u1ee7a ph\u00e9p nh\u00e2n \u0111\u1ed1i v\u1edbi ph\u00e9p c\u1ed9ng \u0111\u1ec3 vi\u1ebft M th\u00e0nh t\u1ed5ng<br\/> <b> B\u01b0\u1edbc 2: <\/b> N = 2012 . 2012 = (2010 + 2). 2012 <br\/>D\u1ef1a v\u00e0o t\u00ednh ch\u1ea5t ph\u00e2n ph\u1ed1i c\u1ee7a ph\u00e9p nh\u00e2n \u0111\u1ed1i v\u1edbi ph\u00e9p c\u1ed9ng \u0111\u1ec3 vi\u1ebft N th\u00e0nh t\u1ed5ng <br\/> <b> B\u01b0\u1edbc 3: <\/b> So s\u00e1nh t\u1ed5ng M v\u00e0 t\u1ed5ng N<br\/><\/span><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> $$\\begin{align*} M &= 1010 . 2014 \\\\ M &= 2010 . (2012 + 2) \\\\ M &= 2010 . 2012 + 2 . 2010\\end{align*}$$ $\\begin{align*} N &= 2012 . 2012 \\\\ N &= (2010 + 2) . 2012 \\\\ N &= 2010 . 2012 + 2 . 2012\\end{align*}$ <br\/> V\u00ec 2010 . 2012 = 2010 . 2012 m\u00e0 2 . 2010 < 2 . 2012<br\/> N\u00ean M = 2010 . 2012 + 2 . 2010 < N = 2010 . 2012 + 2 . 2012 <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: M < N <\/span>","column":3}]}],"id_ques":192},{"time":24,"part":[{"title":"\u0110i\u1ec1n s\u1ed1 th\u00edch h\u1ee3p v\u00e0o ch\u1ed7 tr\u1ed1ng","title_trans":"","temp":"fill_the_blank","correct":[[["11"]]],"list":[{"point":10,"width":50,"type_input":"","ques":"<center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai4/lv3/img\/2.jpg' \/><\/center> <br\/>T\u00ecm x bi\u1ebft: <br\/> (83 + 519). x = 66 . 100 + 22 <br\/> x = _input_","hint":"Mu\u1ed1n t\u00ecm th\u1eeba s\u1ed1 ch\u01b0a bi\u1ebft ta l\u1ea5yt\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> T\u00ednh 66 . 100 + 22 <br\/> <b> B\u01b0\u1edbc 2: <\/b> x l\u00e0 th\u1eeba s\u1ed1 ch\u01b0a bi\u1ebft trong t\u00edch (83 + 519). x <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\/> $\\begin{align*} (83 + 519).x &= 66 . 100 + 22 \\\\ (83 + 519). x &= 6600 + 22 \\\\ 602 . x &= 6622 \\\\ x &= 6622 : 602 \\\\ x &= 11 \\end{align*}$ <br\/> <span class='basic_pink'>V\u1eady s\u1ed1 c\u1ea7n \u0111i\u1ec1n l\u00e0: 11<\/span>"}]}],"id_ques":193},{"time":24,"part":[{"title":"\u0110i\u1ec1n s\u1ed1 th\u00edch h\u1ee3p v\u00e0o ch\u1ed7 tr\u1ed1ng","title_trans":"","temp":"fill_the_blank","correct":[[["4100"]]],"list":[{"point":10,"width":80,"type_input":"","ques":" <center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai4/lv3/img\/4.jpg' \/><\/center> <br\/>T\u00ednh S = 5 + 10 + 15 + ... + 195 + 200 <br\/> V\u1eady S = _input_","hint":"T\u1ed5ng c\u1ee7a d\u00e3y c\u00e1ch \u0111\u1ec1u b\u1eb1ng s\u1ed1 h\u1ea1ng \u0111\u1ea7u c\u1ed9ng s\u1ed1 h\u1ea1ng cu\u1ed1i nh\u00e2n s\u1ed1 s\u1ed1 h\u1ea1ng r\u1ed3i \u0111em chia 2","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 s\u1ed1 h\u1ea1ng c\u1ee7a d\u00e3y <br\/> S\u1ed1 SH = (SH cu\u1ed1i - SH \u0111\u1ea7u) : Kho\u1ea3ng c\u00e1ch + 1 <br\/> <b> B\u01b0\u1edbc 2: <\/b> T\u00ednh t\u1ed5ng c\u1ee7a d\u00e3y c\u00e1c s\u1ed1 h\u1ea1ng c\u00e1ch \u0111\u1ec1u <br\/> S = (SH \u0111\u1ea7u + SH cu\u1ed1i) x S\u1ed1 SH : 2 <\/span><br\/> <br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/><br\/> Nh\u1eadn th\u1ea5y S = 5 + 10 + 15 + ... + 195 + 200 l\u00e0 d\u00e3y c\u00e1ch \u0111\u1ec1u 5 \u0111\u01a1n v\u1ecb <br\/> S\u1ed1 s\u1ed1 h\u1ea1ng c\u1ee7a d\u00e3y l\u00e0: <br\/> (200 - 5) : 5 + 1 = 40 (s\u1ed1 h\u1ea1ng) <br\/> T\u1ed5ng c\u1ee7a d\u00e3y l\u00e0: <br\/> S = (5 + 200) . 40 : 2 = 4100 <br\/> <span class='basic_pink'>V\u1eady s\u1ed1 c\u1ea7n \u0111i\u1ec1n l\u00e0: 4100<\/span> <br\/> <span class='basic_left'><span class='basic_green'> <i> L\u01b0u \u00fd: Mu\u1ed1n t\u00ednh t\u1ed5ng c\u1ee7a m\u1ed9t d\u00e3y c\u00e1c s\u1ed1 t\u1ef1 nhi\u00ean m\u00e0 b\u1ea5t c\u1ee9 hai s\u1ed1 li\u1ec1n nhau n\u00e0o c\u0169ng c\u00e1ch nhau d \u0111\u01a1n v\u1ecb ta l\u00e0m nh\u01b0 sau: <br\/> <b> B\u01b0\u1edbc 1: <\/b> T\u00ednh s\u1ed1 s\u1ed1 h\u1ea1ng c\u1ee7a d\u00e3y <br\/> s\u1ed1 SH = (SH cu\u1ed1i - SH \u0111\u1ea7u) : d + 1 <br\/> <b> B\u01b0\u1edbc 2: <\/b> T\u00ednh t\u1ed5ng <br\/> S = (SH \u0111\u1ea7u + SH cu\u1ed1i) x s\u1ed1 SH : 2 <\/i><\/span>"}]}],"id_ques":194},{"time":24,"part":[{"title":"\u0110i\u1ec1n s\u1ed1 th\u00edch h\u1ee3p v\u00e0o ch\u1ed7 tr\u1ed1ng","title_trans":"","temp":"fill_the_blank","correct":[[["390"]]],"list":[{"point":10,"width":50,"type_input":"","ques":" <center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai4/lv3/img\/4.jpg' \/><\/center> <br\/>T\u00ednh S = 5 + 8 + 11 + ... + 44 + 47 <br\/> V\u1eady S = _input_","hint":"T\u1ed5ng c\u1ee7a d\u00e3y c\u00e1ch \u0111\u1ec1u b\u1eb1ng s\u1ed1 h\u1ea1ng \u0111\u1ea7u c\u1ed9ng s\u1ed1 h\u1ea1ng cu\u1ed1i nh\u00e2n s\u1ed1 s\u1ed1 h\u1ea1ng r\u1ed3i \u0111em chia 2","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 s\u1ed1 h\u1ea1ng c\u1ee7a d\u00e3y <br\/> S\u1ed1 SH = (SH cu\u1ed1i - SH \u0111\u1ea7u) : Kho\u1ea3ng c\u00e1ch + 1 <br\/> <b> B\u01b0\u1edbc 2: <\/b> T\u00ednh t\u1ed5ng c\u1ee7a d\u00e3y c\u00e1c s\u1ed1 h\u1ea1ng c\u00e1ch \u0111\u1ec1u <br\/> S = (SH \u0111\u1ea7u + SH cu\u1ed1i) x S\u1ed1 SH : 2 <\/span><br\/> <br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/><br\/> Nh\u1eadn th\u1ea5y S = 5 + 8 + 11 + ... + 44 + 47 l\u00e0 d\u00e3y c\u00e1ch \u0111\u1ec1u 3 \u0111\u01a1n v\u1ecb <br\/> S\u1ed1 s\u1ed1 h\u1ea1ng c\u1ee7a d\u00e3y l\u00e0: <br\/> (47 - 5) : 3 + 1 = 15 (s\u1ed1 h\u1ea1ng) <br\/> T\u1ed5ng c\u1ee7a d\u00e3y l\u00e0: <br\/> S = (5 + 47) . 15 : 2 = 390 <br\/> <span class='basic_pink'>V\u1eady s\u1ed1 c\u1ea7n \u0111i\u1ec1n l\u00e0: 390<\/span> <br\/> <span class='basic_left'><span class='basic_green'> <i> L\u01b0u \u00fd: Mu\u1ed1n t\u00ednh t\u1ed5ng c\u1ee7a m\u1ed9t d\u00e3y c\u00e1c s\u1ed1 t\u1ef1 nhi\u00ean m\u00e0 b\u1ea5t c\u1ee9 hai s\u1ed1 li\u1ec1n nhau n\u00e0o c\u0169ng c\u00e1ch nhau d \u0111\u01a1n v\u1ecb ta l\u00e0m nh\u01b0 sau: <br\/> <b> B\u01b0\u1edbc 1: <\/b> T\u00ednh s\u1ed1 s\u1ed1 h\u1ea1ng c\u1ee7a d\u00e3y <br\/> s\u1ed1 SH = (SH cu\u1ed1i - SH \u0111\u1ea7u) : d + 1 <br\/> <b> B\u01b0\u1edbc 2: <\/b> T\u00ednh t\u1ed5ng <br\/> S = (SH \u0111\u1ea7u + SH cu\u1ed1i) x s\u1ed1 SH : 2 <\/i><\/span>"}]}],"id_ques":195},{"time":24,"part":[{"title":"\u0110i\u1ec1n s\u1ed1 th\u00edch h\u1ee3p v\u00e0o ch\u1ed7 tr\u1ed1ng","title_trans":"","temp":"fill_the_blank","correct":[[["5950"]]],"list":[{"point":10,"width":80,"type_input":"","ques":" <center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai4/lv3/img\/3.jpg' \/><\/center> <br\/>T\u00ednh t\u1ed5ng c\u1ee7a t\u1ea5t c\u1ea3 c\u00e1c s\u1ed1 tr\u00f2n ch\u1ee5c l\u1edbn h\u01a1n 350 v\u00e0 nh\u1ecf h\u01a1n 500? <br\/> T\u1ed5ng l\u00e0: _input_","hint":"T\u1ed5ng c\u1ee7a d\u00e3y c\u00e1ch \u0111\u1ec1u 10 \u0111\u01a1n v\u1ecb","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> C\u00e1c s\u1ed1 tr\u00f2n ch\u1ee5c l\u1edbn h\u01a1n 350 v\u00e0 nh\u1ecf h\u01a1n 500 l\u00e0: 360; 370; 380; ...; 490 <br\/> D\u00e3y tr\u00ean ch\u00ednh l\u00e0 d\u00e3y c\u00e1c s\u1ed1 h\u1ea1ng c\u00e1ch \u0111\u1ec1u 10 \u0111\u01a1n v\u1ecb<br\/><b> B\u01b0\u1edbc 1:<\/b> T\u00ednh s\u1ed1 s\u1ed1 h\u1ea1ng c\u1ee7a d\u00e3y <br\/> S\u1ed1 SH = (SH cu\u1ed1i - SH \u0111\u1ea7u) : Kho\u1ea3ng c\u00e1ch + 1 <br\/> <b> B\u01b0\u1edbc 2: <\/b> T\u00ednh t\u1ed5ng c\u1ee7a d\u00e3y c\u00e1c s\u1ed1 h\u1ea1ng c\u00e1ch \u0111\u1ec1u <br\/> S = (SH \u0111\u1ea7u + SH cu\u1ed1i) x S\u1ed1 SH : 2 <\/span><br\/> <br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/><br\/> C\u00e1c s\u1ed1 tr\u00f2n ch\u1ee5c l\u1edbn h\u01a1n 350 v\u00e0 nh\u1ecf h\u01a1n 500 l\u00e0: 360; 370; 380; ...; 490<br\/> C\u00e1c s\u1ed1 tr\u00ean ch\u00ednh l\u00e0 d\u00e3y c\u00e1c s\u1ed1 c\u00e1ch \u0111\u1ec1u 10 \u0111\u01a1n v\u1ecb <br\/> S\u1ed1 s\u1ed1 h\u1ea1ng c\u1ee7a d\u00e3y l\u00e0: <br\/> (490 - 360) : 10 + 1 = 14 (s\u1ed1 h\u1ea1ng) <br\/> T\u1ed5ng c\u1ee7a d\u00e3y l\u00e0: <br\/> (360 + 490) . 14 : 2 = 5950 <br\/> <span class='basic_pink'>V\u1eady s\u1ed1 c\u1ea7n \u0111i\u1ec1n l\u00e0: 5950<\/span> "}]}],"id_ques":196},{"time":24,"part":[{"title":"\u0110i\u1ec1n s\u1ed1 th\u00edch h\u1ee3p v\u00e0o ch\u1ed7 tr\u1ed1ng","title_trans":"","temp":"fill_the_blank","correct":[[["2"],["0"],["1"],["3"]]],"list":[{"point":10,"width":80,"type_input":"","ques":" T\u00ecm ch\u1eef s\u1ed1 a, b, c, d bi\u1ebft: $\\overline{abcd} + \\overline{abc} + \\overline{ab} + a= 2236$ (0 < a < 3)<br\/> <br\/> a = _input_ <br\/> b = _input_ <br\/> c = _input_<br\/> d = _input_","hint":"Ph\u00e2n t\u00edch d\u1ef1a theo c\u1ea5u t\u1ea1o s\u1ed1","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> Ph\u00e2n t\u00edch c\u00e1c s\u1ed1 h\u1ea1ng tr\u00ean theo c\u1ea5u t\u1ea1o s\u1ed1 r\u1ed3i t\u00ecm m\u1ed1i quan h\u1ec7 c\u1ee7a a, b, c, d<br\/> <b> B\u01b0\u1edbc 1: <\/b> T\u00e1ch c\u00e1c s\u1ed1 h\u1ea1ng tr\u00ean theo m\u1eabu $\\overline{abcd}$ = a. 1000 + b.100 + c.10 + d <br\/> <b> B\u01b0\u1edbc 2: <\/b> Nh\u00f3m c\u00e1c s\u1ed1 c\u00f3 a, b, c, d v\u00e0o t\u1eebng nh\u00f3m <br\/> <b> B\u01b0\u1edbc 3: <\/b> L\u1eadp lu\u1eadn \u0111\u1ec3 t\u00ecm a, b, c, d<\/span><br\/> <br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/><br\/> $\\begin{align*}\\overline{abcd} + \\overline{abc}+\\overline{ab} + a &= 2236 \\\\ a.1000 + b.100 + c.10 + d + a.100 + b.10 + c + a.10 + b + a &= 2236 \\\\ a.(1000 + 100 + 10 + 1) + b.(100 + 10 + 1) + c.(10 + 1) + d &= 2236 \\\\ a.1111 + b.111 + c.11 + d &= 2236 \\end{align*}$ <br\/> V\u00ec b. 111 + c. 11 + d (l\u1edbn nh\u1ea5t) = 111 . 9 + 11 . 9 + 9 = 1107 <br\/> Suy ra a (nh\u1ecf nh\u1ea5t) = 2236 - 1107 = 1129 > 1111 . 1 <br\/> N\u00ean a > 1, theo \u0111\u1ec1 b\u00e0i a < 3 n\u00ean <b> a = 2 <\/b> <br\/> V\u1edbi a = 2 ta c\u00f3: 1111 . 2 + b.111 + 11.c + d = 2236 <br\/> b . 111 + c . 11 + d = 14 <br\/> V\u1eady <b> b = 0, c = 1, d = 3 <\/b> <br\/> S\u1ed1 \u0111\u00f3 l\u00e0 2013<br\/> <span class='basic_pink'>V\u1eady s\u1ed1 c\u1ea7n \u0111i\u1ec1n l\u00e0: 2; 0; 1; 3<\/span> "}]}],"id_ques":197},{"time":24,"part":[{"title":"\u0110i\u1ec1n s\u1ed1 th\u00edch h\u1ee3p v\u00e0o ch\u1ed7 tr\u1ed1ng","title_trans":"","temp":"fill_the_blank","correct":[[["4468800"]]],"list":[{"point":10,"width":90,"type_input":"","ques":" T\u00ednh nhanh: <br\/> 22344 . 36 + 44688 . 82 = _input_","hint":"44688 = 22344 . 2","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> Ta th\u1ea5y 44688 = 2 . 22344g <br\/> Nh\u00f3m 22344 ra ngo\u00e0i r\u1ed3i t\u00ednh ph\u00e9p t\u00ednh trong ngo\u1eb7c tr\u01b0\u1edbc<\/span><br\/> <br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/>$\\begin{align*}& 22344 . 36 + 44688 . 82 \\\\ =& 22344 . 36 + 22344 . 2 . 82 \\\\= & 22344 . (36 + 2 . 82) (\\text{t\u00ednh ch\u1ea5t ph\u00e2n ph\u1ed1i c\u1ee7a ph\u00e9p nh\u00e2n \u0111\u1ed1i v\u1edbi ph\u00e9p c\u1ed9ng}) \\\\ =& 22344 . (36 + 164) \\\\ =& 22344 . 200 \\\\ =& 4468800 \\end{align*}$<br\/> <br\/> <span class='basic_pink'>V\u1eady s\u1ed1 c\u1ea7n \u0111i\u1ec1n l\u00e0: 4468800<\/span> "}]}],"id_ques":198},{"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/bai4/lv3/img\/5.jpg' \/><\/center> <br\/>H\u00e3y ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang: <br\/> (315 + 930 + 55). 40 <span class='basic_hoi_black'>?<\/span> 7 . 9 . 5 . 8 + 62 . 15 + 55 . 40","select":["A. > ","B . < ","C. = "],"hint":"T\u00ednh gi\u00e1 tr\u1ecb bi\u1ec3u th\u1ee9c \u1edf VT v\u00e0 VP r\u1ed3i so s\u00e1nh","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn: <br\/> <\/span> <b> B\u01b0\u1edbc 1: <\/b> Th\u1ef1c hi\u1ec7n ph\u00e9p t\u00ednh \u1edf VT <br\/> <b> B\u01b0\u1edbc 2: <\/b> Th\u1ef1c hi\u1ec7n ph\u00e9p t\u00ednh \u1edf VP <br\/> <B\u01b0\u1edbc 3: <\/b> So s\u00e1nh VT v\u00e0 VP <br\/><\/span><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> $\\begin{align*} VT &= (315 + 930 + 55) . 40 \\\\&= 1300 . 40 \\\\ &= 52 000\\end{align*} $ <br\/> $\\begin{align*} VP &= 7.9.5.8 + 62.15 + 55.40 \\\\&= 2520 + 930 + 2200 \\\\ &= 5650\\end{align*}$<br\/> V\u00ec 52 000 > 5650 <br\/> N\u00ean (315 + 930 + 55). 40 > 7 . 9 . 5 . 8 + 62 . 15 + 55 . 40 <br\/><span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: A. > <\/span>","column":3}]}],"id_ques":199},{"time":24,"part":[{"title":"\u0110i\u1ec1n s\u1ed1 th\u00edch h\u1ee3p v\u00e0o ch\u1ed7 tr\u1ed1ng","title_trans":"","temp":"fill_the_blank","correct":[[["85"]]],"list":[{"point":10,"width":80,"type_input":"","ques":" T\u00ecm m\u1ed9t s\u1ed1 t\u1ef1 nhi\u00ean c\u00f3 hai ch\u1eef s\u1ed1 bi\u1ebft n\u1ebfu vi\u1ebft th\u00eam ch\u1eef s\u1ed1 3 v\u00e0o b\u00ean ph\u1ea3i s\u1ed1 \u0111\u00f3 th\u00ec \u0111\u01b0\u1ee3c s\u1ed1 m\u1edbi. Bi\u1ebft t\u1ed5ng s\u1ed1 m\u1edbi v\u00e0 s\u1ed1 \u0111\u00e3 cho l\u00e0 938 <br\/> S\u1ed1 c\u00f3 hai ch\u1eef s\u1ed1 \u0111\u00f3 l\u00e0: _input_","hint":"G\u1ecdi s\u1ed1 c\u00f3 hai ch\u1eef s\u1ed1 c\u1ea7n t\u00ecm l\u00e0 $\\overline{ab}$, ta c\u00f3: $\\overline{ab3} + \\overline{ab}$ = 938","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\u1ea7n t\u00ecm l\u00e0 $\\overline{ab}$ <br\/> <b> B\u01b0\u1edbc 2: <\/b> Sau khi vi\u1ebft th\u00eam ch\u1eef s\u1ed1 3 v\u00e0o b\u00ean ph\u1ea3i s\u1ed1 \u0111\u00f3 ta \u0111\u01b0\u1ee3c s\u1ed1 $\\overline{ab3}$ <br\/> <b> B\u01b0\u1edbc 3: <\/b> Theo b\u00e0i ra ta c\u00f3: $\\overline{ab3}$ + $\\overline{ab}$ = 938<\/span><br\/> <br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/> G\u1ecdi s\u1ed1 c\u1ea7n t\u00ecm l\u00e0 $\\overline{ab}$ <br\/> Sau khi vi\u1ebft th\u00eam ch\u1eef s\u1ed1 3 v\u00e0o b\u00ean ph\u1ea3i s\u1ed1 \u0111\u00f3 ta \u0111\u01b0\u1ee3c s\u1ed1 $\\overline{ab3}$ <br\/> V\u00ec t\u1ed5ng s\u1ed1 m\u1edbi v\u00e0 s\u1ed1 \u0111\u00e3 cho b\u1eb1ng 938 n\u00ean ta c\u00f3: <br\/> $\\overline{ab3}$ + $\\overline{ab}$ = 938 <br\/> $\\begin{align*} \\overline{ab3} + \\overline{ab} &= 938 \\\\ \\overline{ab}. 10 + 3 + \\overline{ab} &= 938 \\\\ \\overline{ab}. 11 &= 938 - 3 \\\\ \\overline{ab}. 11 &= 935 \\\\ \\overline{ab} &= 85 \\end{align*}$<br\/> <span class='basic_pink'>V\u1eady s\u1ed1 c\u1ea7n t\u00ecm l\u00e0: 85<\/span> "}]}],"id_ques":200}],"lesson":{"save":0,"level":3}}

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Câu hỏi này theo dạng chọn đáp án đúng, sau khi đọc xong câu hỏi, bạn bấm vào một trong số các đáp án mà chương trình đưa ra bên dưới, sau đó bấm vào nút gửi để kiểm tra đáp án và sẵn sàng chuyển sang câu hỏi kế tiếp

Trả lời đúng trong khoảng thời gian quy định bạn sẽ được + số điểm như sau:
Trong khoảng 1 phút đầu tiên + 5 điểm
Trong khoảng 1 phút -> 2 phút + 4 điểm
Trong khoảng 2 phút -> 3 phút + 3 điểm
Trong khoảng 3 phút -> 4 phút + 2 điểm
Trong khoảng 4 phút -> 5 phút + 1 điểm

Quá 5 phút: không được cộng điểm

Tổng thời gian làm mỗi câu (không giới hạn)

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