{"segment":[{"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":"Ph\u00e2n s\u1ed1 $\\dfrac{15}{4}$ \u0111\u01b0\u1ee3c vi\u1ebft d\u01b0\u1edbi d\u1ea1ng h\u1ed7n s\u1ed1 l\u00e0: ","select":["A. $2\\dfrac{7}{4}$ ","B. $5\\dfrac{1}{4}$","C. $3\\dfrac{1}{4}$","D. $3\\dfrac{3}{4}$ "],"hint":"L\u1ea5y t\u1eed s\u1ed1 chia m\u1eabu s\u1ed1 \u0111\u01b0\u1ee3c th\u01b0\u01a1ng ch\u00ednh l\u00e0 ph\u1ea7n nguy\u00ean c\u1ee7a h\u1ed7n s\u1ed1, c\u00f2n d\u01b0 l\u00e0 t\u1eed s\u1ed1 m\u1edbi","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> <b> B\u01b0\u1edbc 1: <\/b> T\u00ecm ph\u1ea7n nguy\u00ean c\u1ee7a h\u1ed7n s\u1ed1 <br\/> L\u1ea5y 15 chia 4 th\u01b0\u01a1ng \u0111\u01b0\u1ee3c bao nhi\u00eau ch\u00ednh l\u00e0 ph\u1ea7n nguy\u00ean <br\/> <b> B\u01b0\u1edbc 2: <\/b> T\u00ecm ph\u1ea7n ph\u00e2n s\u1ed1 c\u1ee7a h\u1ed7n s\u1ed1 <br\/> L\u1ea5y 15 chia 4 \u0111\u01b0\u1ee3c d\u01b0 bao nhi\u00eau ch\u00ednh l\u00e0 t\u1eed s\u1ed1 c\u1ee7a ph\u1ea7n ph\u00e2n s\u1ed1, m\u1eabu s\u1ed1 l\u00e0 m\u1eabu s\u1ed1 ban \u0111\u1ea7u <\/span> <br\/><br\/><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> Ta c\u00f3: 15 : 4 = 3 d\u01b0 3 <br\/> N\u00ean $\\dfrac{15}{4} = 3\\dfrac{3}{4}$ <br\/> <span class='basic_pink'> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: D. $3\\dfrac{3}{4}$ <\/span> ","column":4}]}],"id_ques":1701},{"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":"Ph\u00e2n s\u1ed1 $\\dfrac{47}{12}$ \u0111\u01b0\u1ee3c vi\u1ebft d\u01b0\u1edbi d\u1ea1ng h\u1ed7n s\u1ed1 l\u00e0: ","select":["A. $3\\dfrac{5}{12}$ ","B. $3\\dfrac{11}{12}$","C. $4\\dfrac{1}{12}$","D. $3\\dfrac{7}{12}$ "],"hint":"","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> <b> B\u01b0\u1edbc 1: <\/b> T\u00ecm ph\u1ea7n nguy\u00ean c\u1ee7a h\u1ed7n s\u1ed1 <br\/> L\u1ea5y 47 chia 12 th\u01b0\u01a1ng \u0111\u01b0\u1ee3c bao nhi\u00eau ch\u00ednh l\u00e0 ph\u1ea7n nguy\u00ean <br\/> <b> B\u01b0\u1edbc 2: <\/b> T\u00ecm ph\u1ea7n ph\u00e2n s\u1ed1 c\u1ee7a h\u1ed7n s\u1ed1 <br\/> L\u1ea5y 47 chia 12 \u0111\u01b0\u1ee3c d\u01b0 bao nhi\u00eau ch\u00ednh l\u00e0 t\u1eed s\u1ed1 c\u1ee7a ph\u1ea7n ph\u00e2n s\u1ed1, m\u1eabu s\u1ed1 l\u00e0 m\u1eabu s\u1ed1 ban \u0111\u1ea7u <\/span> <br\/><br\/><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> Ta c\u00f3: 47: 12 = 3 d\u01b0 11 <br\/> N\u00ean $\\dfrac{47}{12} = 3\\dfrac{11}{12}$ <br\/> <span class='basic_pink'> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: B. $3\\dfrac{11}{12}$ <\/span> ","column":4}]}],"id_ques":1702},{"time":24,"part":[{"title":"\u0110i\u1ec1n \u0111\u00e1p \u00e1n \u0111\u00fang v\u00e0o \u00f4 tr\u1ed1ng","title_trans":"","temp":"fill_the_blank","correct":[[["27"],["15"]]],"list":[{"point":5,"width":50,"ques":"H\u00e3y vi\u1ebft h\u1ed7n s\u1ed1 sau d\u01b0\u1edbi d\u1ea1ng ph\u00e2n s\u1ed1: <br\/> $1 \\dfrac{12}{15}$ = <div class=\"frac123\"><div class=\"ts\">_input_<\/div><div class=\"ms\">_input_<\/div><\/div>","hint":"","explain":" <span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> Mu\u1ed1n vi\u1ebft h\u1ed7n s\u1ed1 $a\\dfrac{c}{d}$ (d $\\neq$ 0) d\u01b0\u1edbi d\u1ea1ng ph\u00e2n s\u1ed1 ta l\u00e0m nh\u01b0 sau: <br\/> $a \\dfrac{c}{d} = \\dfrac{d . a + c}{d}$ <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/> Ta c\u00f3: <br\/> $1 \\dfrac{12}{15} = \\dfrac{1 . 15 + 12}{15} = \\dfrac{27}{15}$"}]}],"id_ques":1703},{"time":24,"part":[{"title":"\u0110i\u1ec1n \u0111\u00e1p \u00e1n \u0111\u00fang v\u00e0o \u00f4 tr\u1ed1ng","title_trans":"","temp":"fill_the_blank","correct":[[["-30"],["7"]]],"list":[{"point":5,"width":50,"ques":"H\u00e3y vi\u1ebft h\u1ed7n s\u1ed1 sau d\u01b0\u1edbi d\u1ea1ng ph\u00e2n s\u1ed1: <br\/> $-4 \\dfrac{2}{7}$ = <div class=\"frac123\"><div class=\"ts\">_input_<\/div><div class=\"ms\">_input_<\/div><\/div>","hint":"","explain":" <span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> Mu\u1ed1n vi\u1ebft h\u1ed7n s\u1ed1 $-a \\dfrac{c}{d}$ (d $\\neq$ 0) d\u01b0\u1edbi d\u1ea1ng ph\u00e2n s\u1ed1 ta vi\u1ebft s\u1ed1 \u0111\u1ed1i c\u1ee7a n\u00f3 d\u01b0\u1edbi d\u1ea1ng ph\u00e2n s\u1ed1 r\u1ed3i \u0111\u1eb7t d\u1ea5u \" - \" tr\u01b0\u1edbc k\u1ebft qu\u1ea3 <br\/> $a \\dfrac{c}{d} = \\dfrac{d . a + c}{d}$ <br\/> N\u00ean $-a \\dfrac{c}{d} = - \\dfrac{d . a + c}{d}$ <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/> Ta c\u00f3: <br\/> $4 \\dfrac{2}{7} = \\dfrac{7 . 4 + 2}{7} = \\dfrac{30}{7}$ <br\/> N\u00ean $-4 \\dfrac{2}{7} = \\dfrac{-30}{7}$"}]}],"id_ques":1704},{"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 th\u1eadp ph\u00e2n 1,425 \u0111\u01b0\u1ee3c vi\u1ebft d\u01b0\u1edbi d\u1ea1ng ph\u00e2n s\u1ed1 th\u1eadp ph\u00e2n l\u00e0: ","select":["A. $\\dfrac{425}{100}$ ","B. $\\dfrac{1425}{100}$","C. $\\dfrac{1425}{1000}$","D. $\\dfrac{425}{1000}$ "],"hint":"Ph\u00e2n s\u1ed1 th\u1eadp ph\u00e2n l\u00e0 ph\u00e2n s\u1ed1 m\u00e0 m\u1eabu l\u00e0 l\u0169y th\u1eeba c\u1ee7a 10","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> <b> B\u01b0\u1edbc 1: <\/b> X\u00e1c \u0111\u1ecbnh t\u1eed s\u1ed1 c\u1ee7a ph\u00e2n s\u1ed1 th\u1eadp ph\u00e2n <br\/> T\u1eed s\u1ed1 l\u00e0 s\u1ed1 th\u1eadp ph\u00e2n ban \u0111\u1ea7u b\u1ecf \u0111i d\u1ea5u ph\u1ea9y <br\/> <b> B\u01b0\u1edbc 2: <\/b> X\u00e1c \u0111\u1ecbnh m\u1eabu s\u1ed1 c\u1ee7a ph\u00e2n s\u1ed1 th\u1eadp ph\u00e2n <br\/> S\u1ed1 ch\u1eef s\u1ed1 c\u1ee7a ph\u1ea7n th\u1eadp ph\u00e2n \u0111\u00fang b\u1eb1ng s\u1ed1 ch\u1eef s\u1ed1 0 \u1edf m\u1eabu c\u1ee7a ph\u00e2n s\u1ed1 th\u1eadp ph\u00e2n <\/span> <br\/><br\/><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> Ta c\u00f3: $1,425 = \\dfrac{1425}{1000}$ <br\/> <span class='basic_pink'> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: C. $\\dfrac{1425}{1000}$ <\/span> ","column":4}]}],"id_ques":1705},{"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":"S\u1ed1 th\u1eadp ph\u00e2n 2,51 \u0111\u01b0\u1ee3c vi\u1ebft d\u01b0\u1edbi d\u1ea1ng ph\u00e2n s\u1ed1 th\u1eadp ph\u00e2n l\u00e0: ","select":["A. $\\dfrac{51}{100}$ ","B. $\\dfrac{251}{100}$","C. $\\dfrac{51}{10}$","D. $\\dfrac{251}{10}$ "],"hint":"Ph\u00e2n s\u1ed1 th\u1eadp ph\u00e2n l\u00e0 ph\u00e2n s\u1ed1 m\u00e0 m\u1eabu l\u00e0 l\u0169y th\u1eeba c\u1ee7a 10","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> <b> B\u01b0\u1edbc 1: <\/b> X\u00e1c \u0111\u1ecbnh t\u1eed s\u1ed1 c\u1ee7a ph\u00e2n s\u1ed1 th\u1eadp ph\u00e2n <br\/> T\u1eed s\u1ed1 l\u00e0 s\u1ed1 th\u1eadp ph\u00e2n ban \u0111\u1ea7u b\u1ecf \u0111i d\u1ea5u ph\u1ea9y <br\/> <b> B\u01b0\u1edbc 2: <\/b> X\u00e1c \u0111\u1ecbnh m\u1eabu s\u1ed1 c\u1ee7a ph\u00e2n s\u1ed1 th\u1eadp ph\u00e2n <br\/> S\u1ed1 ch\u1eef s\u1ed1 c\u1ee7a ph\u1ea7n th\u1eadp ph\u00e2n \u0111\u00fang b\u1eb1ng s\u1ed1 ch\u1eef s\u1ed1 0 \u1edf m\u1eabu c\u1ee7a ph\u00e2n s\u1ed1 th\u1eadp ph\u00e2n <\/span> <br\/><br\/><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> Ta c\u00f3: $2,51 = \\dfrac{251}{100}$ <br\/> <span class='basic_pink'> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: B. $\\dfrac{251}{100}$ <\/span> ","column":4}]}],"id_ques":1706},{"time":24,"part":[{"title":"\u0110i\u1ec1n \u0111\u00e1p \u00e1n \u0111\u00fang v\u00e0o \u00f4 tr\u1ed1ng","title_trans":"","temp":"fill_the_blank","correct":[[["580"]]],"list":[{"point":5,"width":50,"type_input":"","ques":"Vi\u1ebft s\u1ed1 th\u1eadp ph\u00e2n sau \u0111\u00e2y d\u01b0\u1edbi d\u1ea1ng d\u00f9ng k\u00ed hi\u1ec7u % <br\/> 5,8 = _input_% ","hint":"Vi\u1ebft s\u1ed1 th\u1eadp ph\u00e2n d\u01b0\u1edbi d\u1ea1ng ph\u00e2n s\u1ed1 th\u1eadp ph\u00e2n, sau \u0111\u00f3 vi\u1ebft d\u01b0\u1edbi d\u1ea1ng k\u00ed hi\u1ec7u %","explain":" <span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> <b> B\u01b0\u1edbc 1: <\/b> Vi\u1ebft s\u1ed1 th\u1eadp ph\u00e2n tr\u00ean d\u01b0\u1edbi d\u1ea1ng ph\u00e2n s\u1ed1 th\u1eadp ph\u00e2n <br\/> <b> B\u01b0\u1edbc 2: <\/b> Vi\u1ebft ph\u00e2n s\u1ed1 th\u1eadp ph\u00e2n tr\u00ean th\u00e0nh ph\u00e2n s\u1ed1 c\u00f3 m\u1eabu s\u1ed1 l\u00e0 100 <br\/> T\u1eed s\u1ed1 c\u1ee7a ph\u00e2n s\u1ed1 \u0111\u00f3 ch\u00ednh l\u00e0 s\u1ed1 c\u1ea7n t\u00ecm <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/> Ta c\u00f3: <br\/> $5,8 = \\dfrac{58}{10} = \\dfrac{580}{100} = 580\\%$ <br\/> <span class='basic_pink'> V\u1eady s\u1ed1 c\u1ea7n \u0111i\u1ec1n l\u00e0: 580 <\/span> "}]}],"id_ques":1707},{"time":24,"part":[{"title":"\u0110i\u1ec1n \u0111\u00e1p \u00e1n \u0111\u00fang v\u00e0o \u00f4 tr\u1ed1ng","title_trans":"","temp":"fill_the_blank","correct":[[["25,1","25.1"]]],"list":[{"point":5,"width":70,"type_input":"","ques":"Vi\u1ebft s\u1ed1 th\u1eadp ph\u00e2n sau \u0111\u00e2y d\u01b0\u1edbi d\u1ea1ng d\u00f9ng k\u00ed hi\u1ec7u % <br\/> 0,251 = _input_% ","hint":"Vi\u1ebft s\u1ed1 th\u1eadp ph\u00e2n d\u01b0\u1edbi d\u1ea1ng ph\u00e2n s\u1ed1 th\u1eadp ph\u00e2n, sau \u0111\u00f3 vi\u1ebft d\u01b0\u1edbi d\u1ea1ng k\u00ed hi\u1ec7u %","explain":" <span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> <b> B\u01b0\u1edbc 1: <\/b> Vi\u1ebft s\u1ed1 th\u1eadp ph\u00e2n tr\u00ean d\u01b0\u1edbi d\u1ea1ng ph\u00e2n s\u1ed1 th\u1eadp ph\u00e2n <br\/> <b> B\u01b0\u1edbc 2: <\/b> Vi\u1ebft ph\u00e2n s\u1ed1 th\u1eadp ph\u00e2n tr\u00ean th\u00e0nh ph\u00e2n s\u1ed1 c\u00f3 m\u1eabu s\u1ed1 l\u00e0 100 <br\/> T\u1eed s\u1ed1 c\u1ee7a ph\u00e2n s\u1ed1 \u0111\u00f3 ch\u00ednh l\u00e0 s\u1ed1 c\u1ea7n t\u00ecm <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/> Ta c\u00f3: <br\/> $0,251 = \\dfrac{251}{1000} = \\dfrac{25,1}{100} = 25,1\\%$ <br\/> <span class='basic_pink'> V\u1eady s\u1ed1 c\u1ea7n \u0111i\u1ec1n l\u00e0: 25,1 <\/span> "}]}],"id_ques":1708},{"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":"H\u00e3y ch\u1ecdn d\u1ea5u th\u00edch h\u1ee3p thay cho d\u1ea5u <span class='basic_hoi_black'>?<\/span> <br\/> $\\dfrac{24}{7}$ <span class='basic_hoi_black'>?<\/span> $\\dfrac{35}{12}$","select":["A. >","B. <","C. ="],"hint":"Vi\u1ebft d\u01b0\u1edbi d\u1ea1ng h\u1ed7n s\u1ed1 r\u1ed3i so s\u00e1nh","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> <b> B\u01b0\u1edbc 1: <\/b> Vi\u1ebft $\\dfrac{24}{7}$ v\u00e0 $\\dfrac{35}{12}$ d\u01b0\u1edbi d\u1ea1ng h\u1ed7n s\u1ed1 <br\/> <b> B\u01b0\u1edbc 2: <\/b> So s\u00e1nh ph\u1ea7n nguy\u00ean c\u1ee7a hai h\u1ed7n s\u1ed1 v\u1eeba vi\u1ebft <br\/> H\u1ed7n s\u1ed1 n\u00e0o c\u00f3 ph\u1ea7n nguy\u00ean l\u1edbn h\u01a1n th\u00ec h\u1ed7n s\u1ed1 \u0111\u00f3 l\u1edbn h\u01a1n <br\/> N\u1ebfu hai h\u1ed7n s\u1ed1 c\u00f3 ph\u1ea7n nguy\u00ean b\u1eb1ng nhau th\u00ec ta so s\u00e1nh \u0111\u1ebfn ph\u1ea7n ph\u00e2n s\u1ed1 <\/span> <br\/><br\/><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> Ta c\u00f3: <br\/> $\\dfrac{24}{7} = 3 \\dfrac{3}{7}$ <br\/> $\\dfrac{35}{12} = 2 \\dfrac{11}{12}$ <br\/> V\u00ec 3 > 2 n\u00ean $3\\dfrac{3}{7} > 2\\dfrac{11}{12}$ <br\/> $\\Rightarrow$ $\\dfrac{24}{7} > \\dfrac{35}{12}$ <br\/> <span class='basic_pink'> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: A. > <\/span> ","column":4}]}],"id_ques":1709},{"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":"H\u00e3y ch\u1ecdn d\u1ea5u th\u00edch h\u1ee3p thay cho d\u1ea5u <span class='basic_hoi_black'>?<\/span> <br\/> $\\dfrac{141}{36}$ <span class='basic_hoi_black'>?<\/span> $\\dfrac{257}{85}$","select":["A. >","B. <","C. ="],"hint":"Vi\u1ebft d\u01b0\u1edbi d\u1ea1ng h\u1ed7n s\u1ed1 r\u1ed3i so s\u00e1nh","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> <b> B\u01b0\u1edbc 1: <\/b> Vi\u1ebft $\\dfrac{141}{36}$ v\u00e0 $\\dfrac{257}{85}$ d\u01b0\u1edbi d\u1ea1ng h\u1ed7n s\u1ed1 <br\/> <b> B\u01b0\u1edbc 2: <\/b> So s\u00e1nh ph\u1ea7n nguy\u00ean c\u1ee7a hai h\u1ed7n s\u1ed1 v\u1eeba vi\u1ebft <br\/> H\u1ed7n s\u1ed1 n\u00e0o c\u00f3 ph\u1ea7n nguy\u00ean l\u1edbn h\u01a1n th\u00ec h\u1ed7n s\u1ed1 \u0111\u00f3 l\u1edbn h\u01a1n <br\/> N\u1ebfu hai h\u1ed7n s\u1ed1 c\u00f3 ph\u1ea7n nguy\u00ean b\u1eb1ng nhau th\u00ec ta so s\u00e1nh \u0111\u1ebfn ph\u1ea7n ph\u00e2n s\u1ed1 <\/span> <br\/><br\/><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> Ta c\u00f3: <br\/> $\\dfrac{141}{36} = 3 \\dfrac{11}{12}$ <br\/> $\\dfrac{257}{85} = 3 \\dfrac{2}{85}$ <br\/> $\\dfrac{11}{12} > \\dfrac{2}{12}$ m\u00e0 $\\dfrac{2}{12} > \\dfrac{2}{85}$ n\u00ean $\\dfrac{11}{12} > \\dfrac{2}{85}$ <br\/> $\\Rightarrow$ $3 \\dfrac{11}{12} > 3\\dfrac{2}{85}$ <br\/> $\\Rightarrow$ $\\dfrac{141}{36} > \\dfrac{257}{85}$ <br\/> <span class='basic_pink'> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: A. > <\/span> ","column":4}]}],"id_ques":1710},{"time":24,"part":[{"title":"\u0110i\u1ec1n \u0111\u00e1p \u00e1n \u0111\u00fang v\u00e0o \u00f4 tr\u1ed1ng","title_trans":"","temp":"fill_the_blank","correct":[[["21"],["100"]]],"list":[{"point":5,"width":50,"ques":"H\u00e3y vi\u1ebft c\u00e1c ph\u1ea7n tr\u0103m sau d\u01b0\u1edbi d\u1ea1ng ph\u00e2n s\u1ed1 th\u1eadp ph\u00e2n: <br\/> 21% = <div class=\"frac123\"><div class=\"ts\">_input_<\/div><div class=\"ms\">_input_<\/div><\/div>","hint":"","explain":" <span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> K\u00ed hi\u1ec7u % ngh\u0129a l\u00e0 ph\u1ea7n 100 hay m\u1eabu s\u1ed1 l\u00e0 100 <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/> Ta c\u00f3: <br\/> 21% = $\\dfrac{21}{100}$"}]}],"id_ques":1711},{"time":24,"part":[{"title":"\u0110i\u1ec1n \u0111\u00e1p \u00e1n \u0111\u00fang v\u00e0o \u00f4 tr\u1ed1ng","title_trans":"","temp":"fill_the_blank","correct":[[["235"],["100"]]],"list":[{"point":5,"width":50,"type_input":"","input_hint":["frac"],"ques":"H\u00e3y vi\u1ebft c\u00e1c ph\u1ea7n tr\u0103m sau d\u01b0\u1edbi d\u1ea1ng ph\u00e2n s\u1ed1 th\u1eadp ph\u00e2n: <br\/> 235% = <div class=\"frac123\"><div class=\"ts\">_input_<\/div><div class=\"ms\">_input_<\/div><\/div>","hint":"","explain":" <span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> K\u00ed hi\u1ec7u % ngh\u0129a l\u00e0 ph\u1ea7n 100 hay m\u1eabu s\u1ed1 l\u00e0 100 <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/> Ta c\u00f3: <br\/> 235% = $\\dfrac{235}{100}$"}]}],"id_ques":1712},{"time":24,"part":[{"title":"\u0110i\u1ec1n \u0111\u00e1p \u00e1n \u0111\u00fang v\u00e0o \u00f4 tr\u1ed1ng","title_trans":"","temp":"fill_the_blank","correct":[[["15"],["2"]]],"list":[{"point":5,"width":50,"type_input":"","input_hint":["frac"],"ques":"Vi\u1ebft c\u00e1c s\u1ed1 th\u1eadp ph\u00e2n sau d\u01b0\u1edbi d\u1ea1ng ph\u00e2n s\u1ed1 t\u1ed1i gi\u1ea3n <br\/> 7,5 = <div class=\"frac123\"><div class=\"ts\">_input_<\/div><div class=\"ms\">_input_<\/div><\/div>","hint":"Vi\u1ebft s\u1ed1 th\u1eadp ph\u00e2n d\u01b0\u1edbi d\u1ea1ng ph\u00e2n s\u1ed1 th\u1eadp ph\u00e2n sau \u0111\u00f3 r\u00fat g\u1ecdn","explain":"<span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/> Ta c\u00f3: <br\/> 7,5 = $\\dfrac{75}{10} = \\dfrac{15}{2}$"}]}],"id_ques":1713},{"time":24,"part":[{"title":"\u0110i\u1ec1n \u0111\u00e1p \u00e1n \u0111\u00fang v\u00e0o \u00f4 tr\u1ed1ng","title_trans":"","temp":"fill_the_blank","correct":[[["1"],["8"]]],"list":[{"point":5,"width":50,"type_input":"","input_hint":["frac"],"ques":"Vi\u1ebft c\u00e1c s\u1ed1 th\u1eadp ph\u00e2n sau d\u01b0\u1edbi d\u1ea1ng ph\u00e2n s\u1ed1 t\u1ed1i gi\u1ea3n <br\/> 0,125 = <div class=\"frac123\"><div class=\"ts\">_input_<\/div><div class=\"ms\">_input_<\/div><\/div>","hint":"Vi\u1ebft s\u1ed1 th\u1eadp ph\u00e2n d\u01b0\u1edbi d\u1ea1ng ph\u00e2n s\u1ed1 th\u1eadp ph\u00e2n sau \u0111\u00f3 r\u00fat g\u1ecdn","explain":"<span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/> Ta c\u00f3: <br\/> 0,125 = $\\dfrac{125}{1000} = \\dfrac{1}{8}$"}]}],"id_ques":1714},{"time":24,"part":[{"title":"\u0110i\u1ec1n \u0111\u00e1p \u00e1n \u0111\u00fang v\u00e0o \u00f4 tr\u1ed1ng","title_trans":"","temp":"fill_the_blank","correct":[[["7"],["7"],["12"]]],"list":[{"point":5,"width":50,"type_input":"","input_hint":["frac"],"ques":"T\u00ednh. <br\/> $9 \\dfrac{5}{6} - 2 \\dfrac{1}{4}$ = _input_<div class=\"frac123\"><div class=\"ts\">_input_<\/div><div class=\"ms\">_input_<\/div><\/div>","hint":"","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> Mu\u1ed1n tr\u1eeb hai h\u1ed7n s\u1ed1 ta c\u00f3 th\u1ec3 vi\u1ebft ch\u00fang d\u01b0\u1edbi d\u1ea1ng ph\u00e2n s\u1ed1 r\u1ed3i th\u1ef1c hi\u1ec7n ph\u00e9p tr\u1eeb ph\u00e2n s\u1ed1 <br\/> \u0110\u1eb7c bi\u1ec7t: N\u1ebfu c\u1ea3 hai h\u1ed7n s\u1ed1 \u0111\u1ec1u d\u01b0\u01a1ng, ta c\u00f3 th\u1ec3 l\u1ea5y ph\u1ea7n nguy\u00ean tr\u1eeb ph\u1ea7n nguy\u00ean, ph\u1ea7n ph\u00e2n s\u1ed1 tr\u1eeb \u0111i ph\u1ea7n ph\u00e2n s\u1ed1 <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/> Ta c\u00f3: <br\/> $9 \\dfrac{5}{6} - 2 \\dfrac{1}{4} = 9\\dfrac{10}{12} - 2\\dfrac{3}{12} = 7\\dfrac{7}{12}$"}]}],"id_ques":1715},{"time":24,"part":[{"title":"\u0110i\u1ec1n \u0111\u00e1p \u00e1n \u0111\u00fang v\u00e0o \u00f4 tr\u1ed1ng","title_trans":"","temp":"fill_the_blank","correct":[[["5"],["1"],["15"]]],"list":[{"point":5,"width":50,"type_input":"","input_hint":["frac"],"ques":"T\u00ednh. <br\/> $8 \\dfrac{1}{5} - 3 \\dfrac{2}{15}$ = _input_<div class=\"frac123\"><div class=\"ts\">_input_<\/div><div class=\"ms\">_input_<\/div><\/div>","hint":"","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> Mu\u1ed1n tr\u1eeb hai h\u1ed7n s\u1ed1 ta c\u00f3 th\u1ec3 vi\u1ebft ch\u00fang d\u01b0\u1edbi d\u1ea1ng ph\u00e2n s\u1ed1 r\u1ed3i th\u1ef1c hi\u1ec7n ph\u00e9p tr\u1eeb ph\u00e2n s\u1ed1 <br\/> \u0110\u1eb7c bi\u1ec7t: N\u1ebfu c\u1ea3 hai h\u1ed7n s\u1ed1 \u0111\u1ec1u d\u01b0\u01a1ng, ta c\u00f3 th\u1ec3 l\u1ea5y ph\u1ea7n nguy\u00ean tr\u1eeb ph\u1ea7n nguy\u00ean, ph\u1ea7n ph\u00e2n s\u1ed1 tr\u1eeb \u0111i ph\u1ea7n ph\u00e2n s\u1ed1 <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/> Ta c\u00f3: <br\/> $8 \\dfrac{1}{5} - 3 \\dfrac{2}{15} = 8\\dfrac{3}{15} - 3\\dfrac{2}{15} = 5\\dfrac{1}{15}$"}]}],"id_ques":1716},{"time":24,"part":[{"title":"\u0110i\u1ec1n \u0111\u00e1p \u00e1n \u0111\u00fang v\u00e0o \u00f4 tr\u1ed1ng","title_trans":"","temp":"fill_the_blank","correct":[[["6"],["2"],["9"]]],"list":[{"point":5,"width":50,"ques":"T\u00ednh. <br\/> $31 \\dfrac{1}{18} - 24 \\dfrac{5}{6}$ = _input_<div class=\"frac123\"><div class=\"ts\">_input_<\/div><div class=\"ms\">_input_<\/div><\/div>","hint":"","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> Mu\u1ed1n tr\u1eeb hai h\u1ed7n s\u1ed1 ta c\u00f3 th\u1ec3 vi\u1ebft ch\u00fang d\u01b0\u1edbi d\u1ea1ng ph\u00e2n s\u1ed1 r\u1ed3i th\u1ef1c hi\u1ec7n ph\u00e9p tr\u1eeb ph\u00e2n s\u1ed1 <br\/> \u0110\u1eb7c bi\u1ec7t: N\u1ebfu c\u1ea3 hai h\u1ed7n s\u1ed1 \u0111\u1ec1u d\u01b0\u01a1ng, ta c\u00f3 th\u1ec3 l\u1ea5y ph\u1ea7n nguy\u00ean tr\u1eeb ph\u1ea7n nguy\u00ean, ph\u1ea7n ph\u00e2n s\u1ed1 tr\u1eeb \u0111i ph\u1ea7n ph\u00e2n s\u1ed1 <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/> Ta c\u00f3: <br\/> $\\begin{align*} 31 \\dfrac{1}{18} - 24 \\dfrac{5}{6} &= 31\\dfrac{1}{18} - 24\\dfrac{15}{18} \\\\ &= 30\\dfrac{19}{18} - 24\\dfrac{15}{18} \\\\ &= 6\\dfrac{4}{18} \\\\ &= 6\\dfrac{2}{9} \\end{align*}$<br\/> <span class='basic_green'> <i> Nh\u1eadn x\u00e9t: N\u1ebfu ph\u1ea7n ph\u00e2n s\u1ed1 c\u1ee7a s\u1ed1 b\u1ecb tr\u1eeb nh\u1ecf h\u01a1n ph\u1ea7n ph\u00e2n s\u1ed1 c\u1ee7a s\u1ed1 tr\u1eeb th\u00ec ta ph\u1ea3i r\u00fat 1 \u0111\u01a1n v\u1ecb \u1edf ph\u1ea7n nguy\u00ean c\u1ee7a s\u1ed1 b\u1ecb tr\u1eeb \u0111\u1ec3 th\u00eam v\u00e0o ph\u1ea7n ph\u00e2n s\u1ed1 r\u1ed3i sau \u0111\u00f3 ti\u1ebfp t\u1ee5c tr\u1eeb nh\u01b0 tr\u00ean <\/i> <\/span> "}]}],"id_ques":1717},{"time":24,"part":[{"title":"\u0110i\u1ec1n \u0111\u00e1p \u00e1n \u0111\u00fang v\u00e0o \u00f4 tr\u1ed1ng","title_trans":"","temp":"fill_the_blank","correct":[[["100"]]],"list":[{"point":5,"width":50,"ques":"T\u00ednh. <br\/> $3\\dfrac{4}{7} . 28$ = _input_ ","hint":"","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> Khi nh\u00e2n hay chia m\u1ed9t h\u1ed7n s\u1ed1 v\u1edbi m\u1ed9t s\u1ed1 nguy\u00ean ta c\u00f3 th\u1ec3 vi\u1ebft h\u1ed7n s\u1ed1 d\u01b0\u1edbi d\u1ea1ng t\u1ed5ng c\u1ee7a m\u1ed9t s\u1ed1 nguy\u00ean v\u1edbi m\u1ed9t ph\u00e2n s\u1ed1 r\u1ed3i th\u1ef1c hi\u1ec7n ph\u00e9p nh\u00e2n hay chia m\u1ed9t t\u1ed5ng v\u1edbi m\u1ed9t s\u1ed1 <br\/> $a\\dfrac{c}{d} . m = \\left( a + \\dfrac{c}{d} \\right) . m$ <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/> Ta c\u00f3: <br\/> $3\\dfrac{4}{7} . 28 = \\left( 3 + \\dfrac{4}{7} \\right) . 28 = 3 . 28 + \\dfrac{4}{7} . 28 = 84 + 16 = 100 $"}]}],"id_ques":1718},{"time":24,"part":[{"title":"\u0110i\u1ec1n \u0111\u00e1p \u00e1n \u0111\u00fang v\u00e0o \u00f4 tr\u1ed1ng","title_trans":"","temp":"fill_the_blank","correct":[[["3"],["2"],["11"]]],"list":[{"point":5,"width":50,"type_input":"","input_hint":["frac"],"ques":"T\u00ednh. <br\/> $12\\dfrac{8}{11} : 4$ = _input_<div class=\"frac123\"><div class=\"ts\">_input_<\/div><div class=\"ms\">_input_<\/div><\/div>","hint":"","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> Khi nh\u00e2n hay chia m\u1ed9t h\u1ed7n s\u1ed1 v\u1edbi m\u1ed9t s\u1ed1 nguy\u00ean ta c\u00f3 th\u1ec3 vi\u1ebft h\u1ed7n s\u1ed1 d\u01b0\u1edbi d\u1ea1ng t\u1ed5ng c\u1ee7a m\u1ed9t s\u1ed1 nguy\u00ean v\u1edbi m\u1ed9t ph\u00e2n s\u1ed1 r\u1ed3i th\u1ef1c hi\u1ec7n ph\u00e9p nh\u00e2n hay chia m\u1ed9t t\u1ed5ng v\u1edbi m\u1ed9t s\u1ed1 <br\/> $a\\dfrac{c}{d} : m = \\left( a + \\dfrac{c}{d} \\right) : m$ <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/> Ta c\u00f3: <br\/> $12\\dfrac{8}{11} : 4 = \\left( 12 + \\dfrac{8}{11} \\right) : 4 = 12 : 4 + \\dfrac{8}{11} : 4 = 3 + \\dfrac{2}{11} = 3\\dfrac{2}{11}$"}]}],"id_ques":1719},{"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":"110 ph\u00fat \u0111\u01b0\u1ee3c vi\u1ebft d\u01b0\u1edbi d\u1ea1ng h\u1ed7n s\u1ed1 v\u1edbi \u0111\u01a1n v\u1ecb gi\u1edd l\u00e0: ","select":["A. $1\\dfrac{1}{3}$ ","B. $1\\dfrac{2}{3}$","C. $1\\dfrac{3}{10}$","D. $1\\dfrac{5}{6}$ "],"hint":"","explain":"<span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> V\u00ec 1 gi\u1edd = 60 ph\u00fat n\u00ean: <br\/> 110 ph\u00fat = $\\dfrac{110}{60}$ gi\u1edd = $1 \\dfrac{5}{6}$ gi\u1edd <br\/> <span class='basic_pink'> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: D. $1 \\dfrac{5}{6}$ gi\u1edd <\/span> ","column":4}]}],"id_ques":1720}],"lesson":{"save":0,"level":1}}