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{"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}}

Điểm của bạn.

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)

Điểm của bạn.

Bấm vào đây nếu phát hiện có lỗi hoặc muốn gửi góp ý