{"segment":[{"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":[[["100000"],["90000"],["8000"],["500"],["70"],["6"]]],"list":[{"point":5,"width":80,"type_input":"","ques":"Vi\u1ebft theo m\u1eabu: 458 = 400 + 50 + 8. <br\/> 198576 = _input_ + _input_ + _input_ + _input_ + _input_ + _input_","hint":"T\u00e1ch s\u1ed1 198576 theo t\u1eebng h\u00e0ng","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/>T\u00e1ch s\u1ed1 198576 theo t\u1eebng h\u00e0ng nh\u01b0 c\u1ea5u t\u1ea1o s\u1ed1<br\/> <\/span> <br\/><br\/><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/>S\u1ed1 198576 g\u1ed3m 1 tr\u0103m ngh\u00ecn, 9 ch\u1ee5c ngh\u00ecn, 8 ngh\u00ecn, 5 tr\u0103m, 7 ch\u1ee5c, 6 \u0111\u01a1n v\u1ecb<br\/>N\u00ean: 198576 = 100 000 + 90 000 + 8 000 + 500 + 70 + 6 <\/span> <br\/>V\u1eady c\u00e1c s\u1ed1 c\u1ea7n \u0111i\u1ec1n l\u1ea7n l\u01b0\u1ee3t t\u1eeb tr\u00e1i sang ph\u1ea3i l\u00e0: <span class='basic_pink'> 100 000; 90 000; 8 000; 500; 70; 6<\/span>"}]}],"id_ques":71},{"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":[[["900000"],["40000"],["7000"],["8"]]],"list":[{"point":5,"width":80,"type_input":"","ques":"Vi\u1ebft theo m\u1eabu: 458 = 400 + 50 + 8. <br\/> 947008= _input_ + _input_ + _input_ + _input_ ","hint":"T\u00e1ch s\u1ed1 947008 theo t\u1eebng h\u00e0ng","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/>T\u00e1ch s\u1ed1 947008 theo t\u1eebng h\u00e0ng nh\u01b0 c\u1ea5u t\u1ea1o s\u1ed1<br\/> <\/span> <br\/><br\/><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/>S\u1ed1 947008 g\u1ed3m 9 tr\u0103m ngh\u00ecn, 4 ch\u1ee5c ngh\u00ecn, 7 ngh\u00ecn, 8 \u0111\u01a1n v\u1ecb<br\/>N\u00ean: 947008 = 900 000 + 40 000 + 7 000 + 8 <\/span> <br\/>V\u1eady c\u00e1c s\u1ed1 c\u1ea7n \u0111i\u1ec1n l\u1ea7n l\u01b0\u1ee3t t\u1eeb tr\u00e1i sang ph\u1ea3i l\u00e0: <span class='basic_pink'> 900 000; 40 000; 7 000; 8<\/span>"}]}],"id_ques":72},{"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":[[["99999"]]],"list":[{"point":5,"width":70,"type_input":"","ques":"S\u1ed1 t\u1ef1 nhi\u00ean l\u1edbn nh\u1ea5t c\u00f3 5 ch\u1eef s\u1ed1 l\u00e0: _input_","hint":"","explain":"<span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/>S\u1ed1 t\u1ef1 nhi\u00ean l\u1edbn nh\u1ea5t c\u00f3 5 ch\u1eef s\u1ed1 l\u00e0: 99 999 <br\/><span class='basic_pink'>V\u1eady s\u1ed1 c\u1ea7n \u0111i\u1ec1n l\u00e0: 99 999<\/span>"}]}],"id_ques":73},{"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":[[["1023"]]],"list":[{"point":5,"width":60,"type_input":"","ques":"S\u1ed1 t\u1ef1 nhi\u00ean nh\u1ecf nh\u1ea5t c\u00f3 4 ch\u1eef s\u1ed1 kh\u00e1c nhau l\u00e0: _input_","hint":"","explain":"<span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/>S\u1ed1 t\u1ef1 nhi\u00ean nh\u1ecf nh\u1ea5t c\u00f3 4 ch\u1eef s\u1ed1 kh\u00e1c nhau l\u00e0: 1023 <br\/><span class='basic_pink'>V\u1eady s\u1ed1 c\u1ea7n \u0111i\u1ec1n l\u00e0: 1023<\/span>"}]}],"id_ques":74},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":5,"ques":"H\u00e3y ch\u1ecdn s\u1ed1 c\u00f3 5 ch\u1eef s\u1ed1:","select":["A. 4712 ","B. 906385 ","C. 73941 ","D. 308752 "],"hint":"\u0110\u1ebfm s\u1ed1 ch\u1eef s\u1ed1 trong m\u1ed7i s\u1ed1 \u0111\u1ec3 t\u00ecm s\u1ed1 c\u00f3 5 ch\u1eef s\u1ed1","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn: <\/span> <br\/>\u0110\u1ebfm s\u1ed1 ch\u1eef s\u1ed1 trong m\u1ed7i s\u1ed1 \u0111\u1ec3 t\u00ecm s\u1ed1 c\u00f3 5 ch\u1eef s\u1ed1 <br\/> <br\/><\/span><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> <br\/> S\u1ed1 4172 l\u00e0 s\u1ed1 c\u00f3 4 ch\u1eef s\u1ed1 <br\/> S\u1ed1 906375 l\u00e0 s\u00f3 c\u00f3 6 ch\u1eef s\u1ed1 <br\/> S\u1ed1 73941 l\u00e0 s\u1ed1 c\u00f3 5 ch\u1eef s\u1ed1 <br\/> S\u1ed1 308752 l\u00e0 s\u1ed1 c\u00f3 6 ch\u1eef s\u1ed1<br\/><span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: C<\/span>","column":2}]}],"id_ques":75},{"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":"H\u00e3y ch\u1ecdn s\u1ed1 c\u00f3 3 ch\u1eef s\u1ed1:","select":["A. 7151 ","B. 837 ","C. 4008 ","D. 100009 "],"hint":"\u0110\u1ebfm s\u1ed1 ch\u1eef s\u1ed1 c\u1ee7a m\u1ed7i s\u1ed1","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn: <\/span> <br\/> \u0110\u1ebfm s\u1ed1 ch\u1eef s\u1ed1 c\u1ee7a m\u1ed7i s\u1ed1<br\/> <br\/><\/span><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> <br\/> S\u1ed1 7151 l\u00e0 s\u1ed1 c\u00f3 4 ch\u1eef s\u1ed1 <br\/> S\u1ed1 837 l\u00e0 s\u1ed1 c\u00f3 3 ch\u1eef s\u1ed1 <br\/> S\u1ed1 4008 l\u00e0 s\u1ed1 c\u00f3 4 ch\u1eef s\u1ed1 <br\/> S\u1ed1 100009 l\u00e0 s\u1ed1 c\u00f3 6 ch\u1eef s\u1ed1 <br\/><span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: B<\/span>","column":2}]}],"id_ques":76},{"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":"Ch\u1eef s\u1ed1 h\u00e0ng ngh\u00ecn trong s\u1ed1 941768 l\u00e0 s\u1ed1:","select":["A. 9 ","B. 1 ","C. 4","D. 7 "],"hint":"T\u00ednh t\u1eeb ph\u1ea3i qua tr\u00e1i ch\u1eef s\u1ed1 h\u00e0ng ngh\u00ecn l\u00e0 ch\u1eef s\u1ed1 th\u1ee9 t\u01b0 ","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn: <\/span> <br\/>T\u00ednh t\u1eeb ph\u1ea3i qua tr\u00e1i ta c\u00f3 ch\u1eef s\u1ed1 h\u00e0ng \u0111\u01a1n v\u1ecb, h\u00e0ng ch\u1ee5c, h\u00e0ng tr\u0103m, h\u00e0ng ngh\u00ecn<br\/> <br\/><\/span><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> <br\/> Trong s\u1ed1 941768 c\u00f3: 9 tr\u0103m ngh\u00ecn, 4 ch\u1ee5c ngh\u00ecn, 1 ngh\u00ecn, 7 tr\u0103m, 6 ch\u1ee5c v\u00e0 8 \u0111\u01a1n v\u1ecb<br\/> <br\/> V\u1eady ch\u1eef s\u1ed1 h\u00e0ng ngh\u00ecn l\u00e0 s\u1ed1 1 <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: B<\/span>","column":2}]}],"id_ques":77},{"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":"Ch\u1eef s\u1ed1 h\u00e0ng ch\u1ee5c ngh\u00ecn trong s\u1ed1 1375284 l\u00e0 s\u1ed1:","select":["A. 7 ","B. 5 ","C. 3","D. 1 "],"hint":"T\u00ednh t\u1eeb ph\u1ea3i qua tr\u00e1i ch\u1eef s\u1ed1 h\u00e0ng ch\u1ee5c ngh\u00ecn l\u00e0 ch\u1eef s\u1ed1 th\u1ee9 n\u0103m ","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn: <\/span> <br\/>T\u00ednh t\u1eeb ph\u1ea3i qua tr\u00e1i ta c\u00f3 ch\u1eef s\u1ed1 h\u00e0ng \u0111\u01a1n v\u1ecb, h\u00e0ng ch\u1ee5c, h\u00e0ng tr\u0103m, h\u00e0ng ngh\u00ecn, h\u00e0ng ch\u1ee5c ngh\u00ecn<br\/> <br\/><\/span><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> <br\/> Trong s\u1ed1 1375284 c\u00f3: 1 tri\u1ec7u, 3 tr\u0103m ngh\u00ecn, 7 ch\u1ee5c ngh\u00ecn, 5 ngh\u00ecn, 2 tr\u0103m, 8 ch\u1ee5c v\u00e0 4 \u0111\u01a1n v\u1ecb<br\/> <br\/> V\u1eady ch\u1eef s\u1ed1 h\u00e0ng ch\u1ee5c ngh\u00ecn l\u00e0 s\u1ed1 7 <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: A<\/span>","column":2}]}],"id_ques":78},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":5,"ques":" S\u1ed1 XXVI \u0111\u1ecdc l\u00e0:","select":["A.M\u01b0\u1eddi s\u00e1u","B. Hai m\u01b0\u01a1i b\u1ed1n","C. Hai m\u01b0\u01a1i s\u00e1u ","D. M\u01b0\u1eddi b\u1ed1n"],"hint":"Trong h\u1ec7 La M\u00e3: X l\u00e0 10, V l\u00e0 5, I l\u00e0 1","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn: <\/span> <br\/> V\u00ec trong h\u1ec7 La M\u00e3 X l\u00e0 10, V l\u00e0 5, I l\u00e0 1 <br\/> N\u00ean s\u1ed1: XXVI l\u00e0: 10; 10; 5; 1 c\u1ed9ng l\u1ea1i ta \u0111\u01b0\u1ee3c gi\u00e1 tr\u1ecb s\u1ed1 XXVI<\/span> <br\/><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/><br\/> Ta c\u00f3: X l\u00e0 10, V l\u00e0 5, I l\u00e0 1 <br\/> VI l\u00e0 6 N\u00ean: XXVI = 10 + 10 + 6 = 26<br\/> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: <span class='basic_pink'> C. Hai m\u01b0\u01a1i s\u00e1u<\/span>","column":2}]}],"id_ques":79},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":5,"ques":" S\u1ed1 XXIX","select":["A. Hai m\u01b0\u01a1i m\u1ed1t","B. Ba m\u01b0\u01a1i","C. Hai m\u01b0\u01a1i ch\u00edn ","D. Ba m\u01b0\u01a1i m\u1ed1t"],"hint":"Trong h\u1ec7 La M\u00e3: X l\u00e0 10, I l\u00e0 1. <br\/> Khi s\u1ed1 I \u0111\u1ee9ng b\u00ean tr\u00e1i s\u1ed1 V, X hay c\u00e1c s\u1ed1 l\u1edbn h\u01a1n th\u00ec ta \u0111em s\u1ed1 \u0111\u00f3 tr\u1eeb \u0111i 1","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn: <\/span> <br\/> S\u1ed1 I \u0111\u1ee9ng b\u1ebfn tr\u00e1i s\u1ed1 X ngh\u0129a l\u00e0 s\u1ed1 \u0111\u00f3 l\u00e0 10 - 1 = 9 <br\/> N\u00ean s\u1ed1 IX l\u00e0 9 <br\/> V\u1eady s\u1ed1: XXIX l\u00e0 s\u1ed1...<\/span> <br\/><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/><br\/> Ta c\u00f3: X l\u00e0 10; IX l\u00e0 9 <br\/> N\u00ean: XXIX = 10 + 10 + 9 = 29<br\/> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: <span class='basic_pink'> <br\/>C. Hai m\u01b0\u01a1i ch\u00edn<\/span>","column":2}]}],"id_ques":80},{"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":" T\u1eadp h\u1ee3p c\u00e1c s\u1ed1 t\u1ef1 nhi\u00ean c\u00f3 hai ch\u1eef s\u1ed1 m\u00e0 hi\u1ec7u gi\u1eefa ch\u1eef s\u1ed1 h\u00e0ng ch\u1ee5c v\u1edbi ch\u1eef s\u1ed1 h\u00e0ng \u0111\u01a1n v\u1ecb l\u00e0 5 \u0111\u01b0\u1ee3c vi\u1ebft l\u00e0:","select":["A. $A = \\left\\{ \\overline{ab} \\in \\mathbb {N} | a - b = 5\\right\\}$","B. $A = \\left\\{ \\overline{ab} \\in \\mathbb {N} | b - a = 5\\right\\}$ ","C. $A = \\left\\{ \\overline{ab} \\in \\mathbb {N} | a + b = 5\\right\\}$ ","D. $A = \\left\\{ \\overline{ab} \\in \\mathbb {N} | b = a + 5\\right\\}$"],"hint":"C\u00e1c s\u1ed1 d\u1ea1ng $\\overline{ab}$ sao cho hi\u1ec7u c\u1ee7a a v\u00e0 b l\u00e0 5 ","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn: <\/span> <br\/> Hi\u1ec7u gi\u1eefa ch\u1eef s\u1ed1 h\u00e0ng ch\u1ee5c v\u00e0 ch\u1eef s\u1ed1 h\u00e0ng \u0111\u01a1n v\u1ecb l\u00e0 5 ngh\u0129a l\u00e0: <br\/> ch\u1eef s\u1ed1 h\u00e0ng ch\u1ee5c - ch\u1eef s\u1ed1 h\u00e0ng \u0111\u01a1n v\u1ecb = 5<\/span> <br\/><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/><br\/> T\u1eadp h\u1ee3p c\u00e1c s\u1ed1 c\u00f3 hai ch\u1eef s\u1ed1 m\u00e0 hi\u1ec7u gi\u1eefa ch\u1eef s\u1ed1 h\u00e0ng ch\u1ee5c v\u1edbi ch\u1eef s\u1ed1 h\u00e0ng \u0111\u01a1n v\u1ecb l\u00e0 5 ngh\u0129a l\u00e0: <br\/> T\u1eadp h\u1ee3p c\u00e1c s\u1ed1 d\u1ea1ng $\\overline{ab}$ (a l\u00e0 ch\u1eef s\u1ed1 h\u00e0ng ch\u1ee5c, b l\u00e0 ch\u1eef s\u1ed1 h\u00e0ng \u0111\u01a1n v\u1ecb): a - b = 5 hay a = b + 5 <br\/> V\u1eady trong c\u00e1c \u0111\u00e1p \u00e1n tr\u00ean \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0:<span class='basic_pink'> A<\/span>","column":2}]}],"id_ques":81},{"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":" T\u1eadp h\u1ee3p c\u00e1c s\u1ed1 t\u1ef1 nhi\u00ean c\u00f3 hai ch\u1eef s\u1ed1 m\u00e0 ch\u1eef s\u1ed1 h\u00e0ng ch\u1ee5c g\u1ea5p 4 l\u1ea7n ch\u1eef s\u1ed1 h\u00e0ng \u0111\u01a1n v\u1ecb \u0111\u01b0\u1ee3c vi\u1ebft l\u00e0:","select":["A. $A = \\left\\{ \\overline{ab} \\in \\mathbb {N} | a = 4.b\\right\\}$","B. $A = \\left\\{ \\overline{ab} \\in \\mathbb {N} | b = 4 . a\\right\\}$ ","C. $A = \\left\\{ \\overline{ab} \\in \\mathbb {N} | a . b = 4\\right\\}$ ","D. $A = \\left\\{ \\overline{ab} \\in \\mathbb {N} | b : a = 4\\right\\}$"],"hint":"C\u00e1c s\u1ed1 d\u1ea1ng $\\overline{ab}$ sao cho th\u01b0\u01a1ng c\u1ee7a a v\u00e0 b l\u00e0 4 ","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn: <\/span> <br\/> Ch\u1eef s\u1ed1 h\u00e0ng ch\u1ee5c g\u1ea5p 4 l\u1ea7n ch\u1eef s\u1ed1 h\u00e0ng \u0111\u01a1n v\u1ecb ngh\u0129a l\u00e0: <br\/> ch\u1eef s\u1ed1 h\u00e0ng ch\u1ee5c : ch\u1eef s\u1ed1 h\u00e0ng \u0111\u01a1n v\u1ecb = 4<\/span> <br\/><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/><br\/> T\u1eadp h\u1ee3p c\u00e1c s\u1ed1 c\u00f3 hai ch\u1eef s\u1ed1 m\u00e0 ch\u1eef s\u1ed1 h\u00e0ng ch\u1ee5c g\u1ea5p 4 l\u1ea7n ch\u1eef s\u1ed1 h\u00e0ng \u0111\u01a1n v\u1ecb ngh\u0129a l\u00e0: <br\/> T\u1eadp h\u1ee3p c\u00e1c s\u1ed1 d\u1ea1ng $\\overline{ab}$ (a l\u00e0 ch\u1eef s\u1ed1 h\u00e0ng ch\u1ee5c, b l\u00e0 ch\u1eef s\u1ed1 h\u00e0ng \u0111\u01a1n v\u1ecb): a = 4 . b hay a : 4 = b hay a : b = 4 <br\/> V\u1eady trong c\u00e1c \u0111\u00e1p \u00e1n tr\u00ean \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0:<span class='basic_pink'> A<\/span>","column":2}]}],"id_ques":82},{"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":[[["2020"]]],"list":[{"point":5,"width":50,"content":"","type_input":"","ques":"S\u1ed1 t\u1ef1 nhi\u00ean g\u1ed3m 2 ngh\u00ecn v\u00e0 2 ch\u1ee5c vi\u1ebft l\u00e0: _input_ ","hint":" Vi\u1ebft s\u1ed1 2 ngh\u00ecn v\u00e0 2 ch\u1ee5c \u0111em c\u1ed9ng l\u1ea1i ta \u0111\u01b0\u1ee3c s\u1ed1 c\u1ea7n t\u00ecm","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> S\u1ed1 2 ngh\u00ecn l\u00e0: 2000 <br\/> S\u1ed1 2 ch\u1ee5c l\u00e0: 20 <br\/> S\u1ed1 g\u1ed3m 2 ngh\u00ecn v\u00e0 2 ch\u1ee5c ta \u0111em 2 ngh\u00ecn c\u1ed9ng v\u1edbi 2 ch\u1ee5c<\/span> <br\/> <br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/> S\u1ed1 2 ngh\u00ecn: 2000 <br\/> S\u1ed1 2 ch\u1ee5c: 20 <br\/> S\u1ed1 g\u1ed3m 2 ngh\u00ecn v\u00e0 2 ch\u1ee5c l\u00e0: 2000 + 20 = 2020 <br\/><span class='basic_pink'>V\u1eady s\u1ed1 c\u1ea7n \u0111i\u1ec1n l\u00e0: 2020<\/span>"}]}],"id_ques":83},{"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":[[["3712"]]],"list":[{"point":5,"width":70,"content":"","type_input":"","ques":"S\u1ed1 g\u1ed3m 37 tr\u0103m, 1 ch\u1ee5c v\u00e0 2 \u0111\u01a1n v\u1ecb vi\u1ebft l\u00e0: _input_ ","hint":"Vi\u1ebft s\u1ed1 37 tr\u0103m, 1 ch\u1ee5c, 2 \u0111\u01a1n v\u1ecb \u0111em c\u1ed9ng l\u1ea1i ta \u0111\u01b0\u1ee3c s\u1ed1 c\u1ea7n t\u00ecm","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> S\u1ed1 37 tr\u0103m: 3700 <br\/> S\u1ed1 1 ch\u1ee5c: 10 <br\/> 2 \u0111\u01a1n v\u1ecb l\u00e0: 2 <br\/> S\u1ed1 g\u1ed3m 37 tr\u0103m, 1 ch\u1ee5c v\u00e0 2 \u0111\u01a1n v\u1ecb ta \u0111em 37 tr\u0103m c\u1ed9ng 1 ch\u1ee5c c\u1ed9ng 2 \u0111\u01a1n v\u1ecb \u0111\u1ec3 \u0111\u01b0\u1ee3c s\u1ed1 c\u1ea7n t\u00ecm<\/span> <br\/> <br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/> S\u1ed1 37 tr\u0103m: 3700 <br\/> S\u1ed1 1 ch\u1ee5c: 10 <br\/> S\u1ed1 2 \u0111\u01a1n v\u1ecb: 2 <br\/> S\u1ed1 g\u1ed3m 37 tr\u0103m, 1 ch\u1ee5c v\u00e0 2 \u0111\u01a1n v\u1ecb l\u00e0: 3700 + 10 + 2 = 3712 <br\/> <span class='basic_pink'>V\u1eady s\u1ed1 c\u1ea7n \u0111i\u1ec1n l\u00e0: 3712<\/span>"}]}],"id_ques":84},{"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":[[["8420"]]],"list":[{"point":5,"width":70,"content":"","type_input":"","ques":"S\u1ed1 t\u1ef1 nhi\u00ean l\u1edbn nh\u1ea5t c\u00f3 4 ch\u1eef s\u1ed1 vi\u1ebft \u0111\u01b0\u1ee3c t\u1eeb 4 s\u1ed1 4; 0; 2; 8 l\u00e0: _input_ ","hint":"Ch\u1ecdn c\u00e1c s\u1ed1 l\u1ea7n l\u01b0\u1ee3t t\u1eeb l\u1edbn \u0111\u1ebfn nh\u1ecf cho h\u00e0ng ngh\u00ecn, h\u00e0ng tr\u0103m, h\u00e0ng ch\u1ee5c v\u00e0 h\u00e0ng \u0111\u01a1n v\u1ecb","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> Ch\u1ecdn ch\u1eef s\u1ed1 h\u00e0ng ngh\u00ecn l\u00e0 s\u1ed1 l\u1edbn nh\u1ea5t <br\/> Ch\u1ecdn ch\u1eef s\u1ed1 h\u00e0ng tr\u0103m l\u1edbn nh\u1ea5t trong c\u00e1c s\u1ed1 c\u00f2n l\u1ea1i <br\/> Ch\u1ecdn ch\u1eef s\u1ed1 h\u00e0ng ch\u1ee5c l\u00e0 s\u1ed1 l\u1edbn h\u01a1n trong hai s\u1ed1 c\u00f2n l\u1ea1i <br\/> C\u00f2n l\u1ea1i l\u00e0 ch\u1eef s\u1ed1 h\u00e0ng \u0111\u01a1n v\u1ecb<\/span> <br\/> <br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/> Ch\u1eef s\u1ed1 h\u00e0ng ngh\u00ecn ch\u1ecdn: 8 <br\/> Ch\u1eef s\u1ed1 h\u00e0ng tr\u0103m ch\u1ecdn 4 <br\/> Ch\u1eef s\u1ed1 h\u00e0ng ch\u1ee5c ch\u1ecdn 2 <br\/> Ch\u1eef s\u1ed1 h\u00e0ng \u0111\u01a1n v\u1ecb l\u00e0 0 <br\/> <span class='basic_pink'>V\u1eady s\u1ed1 l\u1edbn nh\u1ea5t c\u00f3 4 ch\u1eef s\u1ed1 vi\u1ebft \u0111\u01b0\u1ee3c l\u00e0: 8420<\/span>"}]}],"id_ques":85},{"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":[[["1058"]]],"list":[{"point":5,"width":70,"content":"","type_input":"","ques":"S\u1ed1 t\u1ef1 nhi\u00ean nh\u1ecf nh\u1ea5t c\u00f3 4 ch\u1eef s\u1ed1 vi\u1ebft \u0111\u01b0\u1ee3c t\u1eeb 4 s\u1ed1 5; 1; 0; 8 l\u00e0: _input_ ","hint":"Ch\u1ecdn c\u00e1c s\u1ed1 l\u1ea7n l\u01b0\u1ee3t t\u1eeb nh\u1ecf \u0111\u1ebfn l\u1edbn cho h\u00e0ng ngh\u00ecn, h\u00e0ng tr\u0103m, h\u00e0ng ch\u1ee5c v\u00e0 h\u00e0ng \u0111\u01a1n v\u1ecb <br\/> Ch\u1eef s\u1ed1 h\u00e0ng ngh\u00ecn kh\u00f4ng th\u1ec3 l\u00e0 0 n\u00ean ta ch\u1ecdn 1","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> S\u1ed1 0 l\u00e0 s\u1ed1 nh\u1ecf nh\u1ea5t nh\u01b0ng s\u1ed1 0 kh\u00f4ng th\u1ec3 ch\u1ecdn l\u00e0m h\u00e0ng ngh\u00ecn <br\/> Ch\u1eef s\u1ed1 h\u00e0ng ngh\u00ecn ch\u1ecdn 1 <br\/> Ch\u1eef s\u1ed1 h\u00e0ng tr\u0103m l\u00e0 s\u1ed1 nh\u1ecf nh\u1ea5t trong c\u00e1c s\u1ed1 c\u00f2n l\u1ea1i <br\/> Ch\u1ecdn ch\u1eef s\u1ed1 h\u00e0ng ch\u1ee5c l\u00e0 s\u1ed1 nh\u1ecf h\u01a1n trong hai s\u1ed1 c\u00f2n l\u1ea1i <br\/> Ch\u1eef s\u1ed1 h\u00e0ng \u0111\u01a1n v\u1ecb l\u00e0 s\u1ed1 c\u00f2n l\u1ea1i<\/span> <br\/> <br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/> Ch\u1eef s\u1ed1 h\u00e0ng ngh\u00ecn ch\u1ecdn: 1 <br\/> Ch\u1eef s\u1ed1 h\u00e0ng tr\u0103m ch\u1ecdn 0 <br\/> Ch\u1eef s\u1ed1 h\u00e0ng ch\u1ee5c ch\u1ecdn 5 <br\/> Ch\u1eef s\u1ed1 h\u00e0ng \u0111\u01a1n v\u1ecb l\u00e0 8 <br\/> <span class='basic_pink'>V\u1eady s\u1ed1 nh\u1ecf nh\u1ea5t c\u00f3 4 ch\u1eef s\u1ed1 vi\u1ebft \u0111\u01b0\u1ee3c l\u00e0: 1058<\/span>"}]}],"id_ques":86},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":5,"ques":"M\u1ed9t s\u1ed1 t\u1ef1 nhi\u00ean s\u1ebd thay \u0111\u1ed5i nh\u01b0 th\u1ebf n\u00e0o n\u1ebfu ta vi\u1ebft th\u00eam ch\u1eef s\u1ed1 0 v\u00e0o b\u00ean ph\u1ea3i s\u1ed1 \u0111\u00f3?","select":["A. Kh\u00f4ng thay \u0111\u1ed5i","B. T\u0103ng 10 \u0111\u01a1n v\u1ecb ","C. T\u0103ng 10 l\u1ea7n ","D. T\u0103ng 100 \u0111\u01a1n v\u1ecb"],"hint":"Vi\u1ebft th\u00eam ch\u1eef s\u1ed1 0 v\u00e0o b\u00ean ph\u1ea3i gi\u1ed1ng vi\u1ec7c \u0111em s\u1ed1 \u0111\u00f3 nh\u00e2n 10","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> Vi\u1ebft th\u00eam ch\u1eef s\u1ed1 0 v\u00e0o b\u00ean ph\u1ea3i gi\u1ed1ng vi\u1ec7c \u0111em s\u1ed1 \u0111\u00f3 nh\u00e2n 10<\/span> <br\/><br\/><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/> Khi vi\u1ebft th\u00eam s\u1ed1 0 v\u00e0o b\u00ean ph\u1ea3i s\u1ed1 ban \u0111\u1ea7u s\u1ebd t\u0103ng 10 l\u1ea7n<br\/><span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0:C <\/span>","column":2}]}],"id_ques":87},{"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":"M\u1ed9t s\u1ed1 c\u00f3 3 ch\u1eef s\u1ed1 s\u1ebd thay \u0111\u1ed5i nh\u01b0 th\u1ebf n\u00e0o n\u1ebfu vi\u1ebft th\u00eam ch\u1eef s\u1ed1 1 v\u00e0o b\u00ean tr\u00e1i s\u1ed1 \u0111\u00f3?","select":["A. T\u0103ng 100 \u0111\u01a1n v\u1ecb","B. T\u0103ng 10 \u0111\u01a1n v\u1ecb ","C. T\u0103ng 1 \u0111\u01a1n v\u1ecb","D. T\u0103ng 1000 \u0111\u01a1n v\u1ecb"],"hint":"M\u1ed9t s\u1ed1 c\u00f3 3 ch\u1eef s\u1ed1 khi vi\u1ebft th\u00eam ch\u1eef s\u1ed1 1 v\u00e0o b\u00ean tr\u00e1i c\u00f3 ngh\u0129a s\u1ed1 1 \u0111\u00f3 tr\u1edf th\u00e0nh ch\u1eef s\u1ed1 h\u00e0ng ngh\u00ecn","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> Khi vi\u1ebft th\u00eam ch\u1eef s\u1ed1 1 v\u00e0o b\u00ean tr\u00e1i m\u1ed9t s\u1ed1 c\u00f3 3 ch\u1eef s\u1ed1 th\u00ec ch\u1eef s\u1ed1 1 \u0111\u00f3 tr\u1edf th\u00e0nh h\u00e0ng ngh\u00ecn <br\/> V\u1eady s\u1ed1 \u0111\u00f3 t\u0103ng th\u00eam...\u0111\u01a1n v\u1ecb<\/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 $\\overline{abc}$ khi vi\u1ebft th\u00eam ch\u1eef s\u1ed1 1 v\u00e0o b\u00ean tr\u00e1i ta \u0111\u01b0\u1ee3c s\u1ed1 $\\overline{1abc}$ <br\/> Ta c\u00f3: $\\overline{1abc} = 1000 + \\overline{abc}$ <br\/> N\u00ean khi vi\u1ebft th\u00eam ch\u1eef s\u1ed1 1 v\u00e0o b\u00ean tr\u00e1i m\u1ed9t s\u1ed1 c\u00f3 3 ch\u1eef s\u1ed1 th\u00ec s\u1ed1 \u0111\u00f3 t\u0103ng th\u00eam 1000 \u0111\u01a1n v\u1ecb<br\/><span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: D<\/span><br\/>","column":2}]}],"id_ques":88},{"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":[[["116472"]]],"list":[{"point":5,"width":90,"content":"","type_input":"","ques":"T\u1eadp h\u1ee3p c\u00e1c s\u1ed1 t\u1ef1 nhi\u00ean x th\u1ecfa m\u00e3n x : 184 = 3165 : 5 l\u00e0:{ _input_ } ","hint":"T\u00ecm x th\u1ecfa m\u00e3n x : 184 = 3165 : 5","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> T\u00ecm s\u1ed1 t\u1ef1 nhi\u00ean x th\u1ecfa m\u00e3n x : 184 = 3165 : 5<\/span> <br\/> <br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/> $$\\begin{align*} x : 184 &= 3165 : 5 \\\\ x : 184 &= 633 \\\\ x &= 633 . 184 \\\\ x &= 116472 \\end{align*}$$<br\/> <span class='basic_pink'>V\u1eady s\u1ed1 c\u1ea7n \u0111i\u1ec1n l\u00e0: 116472<\/span>"}]}],"id_ques":89},{"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":[[["159315"]]],"list":[{"point":5,"width":90,"content":"","type_input":"","ques":"T\u1eadp h\u1ee3p c\u00e1c s\u1ed1 t\u1ef1 nhi\u00ean x th\u1ecfa m\u00e3n x : 215 = 49713 - 48972 l\u00e0:{ _input_ } ","hint":"T\u00ecm x th\u1ecfa m\u00e3n x : 215 = 49713 - 48972","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> T\u00ecm s\u1ed1 t\u1ef1 nhi\u00ean x th\u1ecfa m\u00e3n x : 215 = 49713 - 48972<\/span> <br\/> <br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/> $$\\begin{align*} x : 215 &= 49713 - 48972 \\\\ x : 215 &= 741 \\\\ x &= 741 . 215 \\\\ x &= 159315 \\end{align*}$$<br\/> <span class='basic_pink'>V\u1eady s\u1ed1 c\u1ea7n \u0111i\u1ec1n l\u00e0: 159315<\/span>"}]}],"id_ques":90}],"lesson":{"save":0,"level":2}}