{"segment":[{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":10,"ques":" (-38) + (-192) <span class='basic_hoi_black'>?<\/span> (-47) + (-165)","select":[" >"," < "," = "],"hint":" T\u00ednh k\u1ebft qu\u1ea3 c\u1ee7a t\u1eebng v\u1ebf r\u1ed3i so s\u00e1nh","explain":" <span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/>T\u00ednh k\u1ebft qu\u1ea3 c\u1ee7a t\u1eebng v\u1ebf r\u1ed3i so s\u00e1nh<br\/><i><b> L\u01b0u \u00fd: <\/i><\/b> Mu\u1ed1n c\u1ed9ng hai s\u1ed1 nguy\u00ean \u00e2m, ta c\u1ed9ng hai gi\u00e1 tr\u1ecb tuy\u1ec7t \u0111\u1ed1i c\u1ee7a ch\u00fang r\u1ed3i \u0111\u1eb7t d\u1ea5u ( - ) tr\u01b0\u1edbc k\u1ebft qu\u1ea3<\/span> <br\/><br\/><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/>$ \\underbrace{(-38) + (-192)}_{-230}$ <span class='basic_hoi_black'>?<\/span> $ \\underbrace{(-47) + (-165)}_{-212}$<br\/>M\u00e0 -230 < -212 <br\/>N\u00ean (-38) + (-192) < (-47) + (-165)<br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: <span class='basic_pink'> <<\/span><\/span> <br\/> ","column":3}]}],"id_ques":981},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":10,"ques":" 39412 + |-3851| = <span class='basic_hoi_black'>?<\/span>","select":["A. 35561","B. -35561 ","C. 43263 ","D. -43263"],"hint":"","explain":" <span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/>B\u01b0\u1edbc 1: B\u1ecf d\u1ea5u gi\u00e1 tr\u1ecb tuy\u1ec7t \u0111\u1ed1i c\u1ee7a |-3 851|<br\/>B\u01b0\u1edbc 2: Th\u1ef1c hi\u1ec7n ph\u00e9p t\u00ednh<br\/>B\u01b0\u1edbc 3: L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang<\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/>$\\begin{align*}39412 + |-3851| &= 39412 + 3851 \\\\&= 43263\\end{align*}$<br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: <span class='basic_pink'>C. 43263<\/span><\/span> <br\/>","column":2}]}],"id_ques":982},{"time":24,"part":[{"title":"\u0110i\u1ec1n s\u1ed1 th\u00edch h\u1ee3p v\u00e0o ch\u1ed7 tr\u1ed1ng","title_trans":"","temp":"fill_the_blank","correct":[[["-4100"," -4100","-4100 "," -4100 ","- 4100"," - 4100","-4100 "]]],"list":[{"point":10,"width":70,"type_input":"","ques":"<center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai20/lv3/img\/2.jpg' \/><\/center>T\u1ed5ng c\u1ee7a -2523 v\u00e0 -1577 l\u00e0: _input_","hint":"","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/>Mu\u1ed1n c\u1ed9ng hai s\u1ed1 nguy\u00ean \u00e2m, ta c\u1ed9ng hai gi\u00e1 tr\u1ecb tuy\u1ec7t \u0111\u1ed1i c\u1ee7a ch\u00fang r\u1ed3i \u0111\u1eb7t d\u1ea5u ( - ) tr\u01b0\u1edbc k\u1ebft qu\u1ea3<\/span> <br\/><br\/><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/>T\u1ed5ng c\u1ee7a -2523 v\u00e0 -1577 l\u00e0:<br\/>$\\begin{align*}(-2523) + (-1577) &= - (2523 + 1577) \\\\&= -4100\\end{align*}$<br\/>V\u1eady s\u1ed1 c\u1ea7n \u0111i\u1ec1n v\u00e0o \u00f4 tr\u1ed1ng l\u00e0: <span class='basic_pink'>-4100<\/span><\/span><\/span> <br\/> "}]}],"id_ques":983},{"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":" $|-2|^{300}$ <span class='basic_hoi_black'>?<\/span> $|-4|^{150}$","select":[" >"," < "," = "],"hint":" Ph\u00e1 d\u1ea5u gi\u00e1 tr\u1ecb tuy\u1ec7t \u0111\u1ed1i r\u1ed3i \u0111\u01b0a hai l\u0169y th\u1eeba v\u1ec1 d\u1ea1ng c\u00f9ng c\u01a1 s\u1ed1 (ho\u1eb7c c\u00f9ng s\u1ed1 m\u0169) \u0111\u1ec3 so s\u00e1nh","explain":" <span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/>B\u01b0\u1edbc 1: Ph\u00e1 d\u1ea5u gi\u00e1 tr\u1ecb tuy\u1ec7t \u0111\u1ed1i<br\/>B\u01b0\u1edbc 2: \u0110\u01b0a hai l\u0169y th\u1eeba v\u1ec1 d\u1ea1ng c\u00f9ng c\u01a1 s\u1ed1 ( ho\u1eb7c c\u00f9ng s\u1ed1 m\u0169 \u0111\u1ec3 so s\u00e1nh)<br\/>B\u01b0\u1edbc 3: Ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang<\/span> <br\/><br\/><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/> Ta c\u00f3: $|-2|^{300}$ = $2^{300}$; $|-4|^{150}$ = $4^{150}$<br\/>M\u00e0 $4^{150}$ = $(2^{2})^{150}$ = $2^{2 . 150}$ = $2^{300}$ <br\/>N\u00ean $|-2|^{300}$ = $|-4|^{150}$<br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: <span class='basic_pink'> =<\/span><\/span><\/span> <br\/> ","column":3}]}],"id_ques":984},{"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":[[["-111"," -111","-111 "," -111 ","- 111"," - 111","-111 "]]],"list":[{"point":10,"width":70,"type_input":"","ques":"<center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai20/lv3/img\/2.jpg' \/><\/center>T\u1ed5ng c\u00e1c s\u1ed1 nguy\u00ean \u00e2m l\u1edbn nh\u1ea5t c\u00f3 1 ch\u1eef s\u1ed1, c\u00f3 2 ch\u1eef s\u1ed1 v\u00e0 c\u00f3 3 ch\u1eef s\u1ed1 l\u00e0: _input_","hint":"","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/>B\u01b0\u1edbc 1: T\u00ecm c\u00e1c s\u1ed1 nguy\u00ean \u00e2m l\u1edbn nh\u1ea5t c\u00f3 1 ch\u1eef s\u1ed1, c\u00f3 2 ch\u1eef s\u1ed1 v\u00e0 c\u00f3 3 ch\u1eef s\u1ed1<br\/>B\u01b0\u1edbc 2: T\u00ednh t\u1ed5ng c\u00e1c s\u1ed1 v\u1eeba t\u00ecm \u0111\u01b0\u1ee3c \u1edf b\u01b0\u1edbc 1<br\/><\/span> <br\/><br\/><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/>S\u1ed1 nguy\u00ean \u00e2m l\u1edbn nh\u1ea5t c\u00f3 1 ch\u1eef s\u1ed1, c\u00f3 2 ch\u1eef s\u1ed1 v\u00e0 c\u00f3 3 ch\u1eef s\u1ed1 l\u1ea7n l\u01b0\u1ee3t l\u00e0: -1; -10; -100<br\/>T\u1ed5ng c\u1ee7a c\u00e1c s\u1ed1 nguy\u00ean \u00e2m l\u1edbn nh\u1ea5t c\u00f3 1 ch\u1eef s\u1ed1, c\u00f3 2 ch\u1eef s\u1ed1 v\u00e0 c\u00f3 3 ch\u1eef s\u1ed1 l\u00e0:<br\/>(-1) + (-10) + (-100) = - (1 + 10 + 100) = -111<br\/>V\u1eady s\u1ed1 c\u1ea7n \u0111i\u1ec1n v\u00e0o \u00f4 tr\u1ed1ng l\u00e0: <span class='basic_pink'> -111<\/span><\/span> <br\/> "}]}],"id_ques":985},{"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":" T\u00ecm x, bi\u1ebft:<br\/> x - (-54) = (-72) + (-28)","select":["A. x = 46","B. x = -46","C. x = -154 ","D. x = 154"],"hint":"","explain":" <span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/>B\u01b0\u1edbc 1: T\u00ednh k\u1ebft qu\u1ea3 v\u1ebf ph\u1ea3i<br\/>B\u01b0\u1edbc 2: T\u00ednh x <b>( x \u1edf v\u1ecb tr\u00ed l\u00e0 s\u1ed1 b\u1ecb tr\u1eeb, s\u1ed1 b\u1ecb tr\u1eeb = hi\u1ec7u + s\u1ed1 tr\u1eeb )<\/b><\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/>$\\begin{align*}x - (-54) &= (-72) + (-28)\\\\x - (-54) &= - (72 + 28 )\\\\x - (-54) &= -100 \\\\x&= (-100) + (-54)\\\\x&= - (100 + 54 )\\\\x& = -154\\end{align*}$<br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: <span class='basic_pink'>C. x = -154<\/span><\/span> <br\/>","column":2}]}],"id_ques":986},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":10,"ques":" Bi\u1ebft -84 < x $\\le$ -75. T\u00ednh t\u1ed5ng c\u00e1c gi\u00e1 tr\u1ecb c\u1ee7a x.","select":["A. 711","B. -711","C. -636 ","D. -795"],"hint":"","explain":" <span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/>B\u01b0\u1edbc 1: T\u00ecm c\u00e1c gi\u00e1 tr\u1ecb c\u1ee7a x, (-84 < x $\\le$ -75 t\u1ee9c l\u00e0 c\u00e1c gi\u00e1 tr\u1ecb x\u1ee7a x g\u1ed3m: <b>-75 v\u00e0 c\u00e1c s\u1ed1 nguy\u00ean n\u1eb1m gi\u1eefa -84 v\u00e0 -75<\/b>)<br\/>B\u01b0\u1edbc 2: T\u00ednh t\u1ed5ng c\u00e1c gi\u00e1 tr\u1ecb c\u1ee7a x v\u1eeba t\u00ecm \u0111\u01b0\u1ee3c <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/> -84 < x $\\le$ -75 n\u00ean x $\\in$ {-83; -82; -81; -80; -79; -78; -77; -76; -75}<br\/>T\u1ed5ng c\u1ee7a c\u00e1c s\u1ed1 nguy\u00ean x l\u00e0:<br\/>$\\begin{align*}&(-83) + (-82) + (-81) + (-80) + (-79) + (-78) + (-77) + (-76) + (-75) \\\\&= - (83 + 82 + 81 + 80 + 79 + 78 + 77 + 76 + 75)\\\\&= - [9 . (83 + 75) ] : 2 \\\\ &= -711 \\end{align*}$<br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0:<span class='basic_pink'>B. -711<\/span><\/span><\/span> <br\/>","column":2}]}],"id_ques":987},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":10,"ques":" (-173) + (-46) + (-54) + (-27) = <span class='basic_hoi_black'>?<\/span>","select":["A. -200","B. -300","C. -400 ","D. -500"],"hint":"","explain":" <span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/>B\u01b0\u1edbc 1: Nh\u00f3m nh\u1eefng c\u1eb7p c\u00f3 t\u1ed5ng l\u00e0 s\u1ed1 tr\u00f2n tr\u1ee5c, tr\u00f2n tr\u0103m, tr\u00f2n ngh\u00ecn...<br\/>B\u01b0\u1edbc 2: T\u00ednh <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/>$\\begin{align*}&(-173) + (-46) + (-54) + (-27) \\\\&= [(-173) + (-27)] + [(-46) + (-54)]\\\\&= [-(173 + 27)] + [-(46 + 54)]\\\\ &= (-200) + (-100) \\\\&= - (200 + 100)\\\\&= -300\\end{align*}$<br\/>V\u1eady s\u1ed1 c\u1ea7n \u0111i\u1ec1n v\u00e0o \u00f4 tr\u1ed1ng l\u00e0: <span class='basic_pink'>B. -300<\/span><\/span> <br\/>","column":2}]}],"id_ques":988},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":10,"ques":" |-1258| + |-175| + |87| = <span class='basic_hoi_black'>?<\/span>","select":["A. 1510","B. 1520","C. 1530 ","D. 1540"],"hint":"","explain":" <span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/>B\u01b0\u1edbc 1: Ph\u00e1 d\u1ea5u gi\u00e1 tr\u1ecb tuy\u1ec7t \u0111\u1ed1i<br\/>B\u01b0\u1edbc 2: T\u00ednh gi\u00e1 tr\u1ecb bi\u1ec3u th\u1ee9c, ( Bi\u1ec3u th\u1ee9c ch\u1ec9 c\u00f3 ph\u00e9p t\u00ednh c\u1ed9ng ta th\u1ef1c hi\u1ec7n t\u00ednh l\u1ea7n l\u01b0\u1ee3t t\u1eeb tr\u00e1i qua ph\u1ea3i) <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/>$\\begin{align*}&|-1258| + |-175| + |87| \\\\&= 1258 + 175 + 87\\\\&= 1433 + 87 \\\\ &= 1520 \\end{align*}$<br\/>V\u1eady s\u1ed1 c\u1ea7n \u0111i\u1ec1n v\u00e0o \u00f4 tr\u1ed1ng l\u00e0: <span class='basic_pink'>B. 1520<\/span><\/span> <br\/>","column":2}]}],"id_ques":989},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":10,"ques":" $|-81|^{8}$ <span class='basic_hoi_black'>?<\/span> $|-27|^{11}$","select":[" >"," < "," = "],"hint":" Ph\u00e1 d\u1ea5u gi\u00e1 tr\u1ecb tuy\u1ec7t \u0111\u1ed1i r\u1ed3i \u0111\u01b0a hai l\u0169y th\u1eeba v\u1ec1 d\u1ea1ng c\u00f9ng c\u01a1 s\u1ed1 (ho\u1eb7c c\u00f9ng s\u1ed1 m\u0169) \u0111\u1ec3 so s\u00e1nh","explain":" <span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/>B\u01b0\u1edbc 1: Ph\u00e1 d\u1ea5u gi\u00e1 tr\u1ecb tuy\u1ec7t \u0111\u1ed1i<br\/>B\u01b0\u1edbc 2: \u0110\u01b0a hai l\u0169y th\u1eeba v\u1ec1 d\u1ea1ng c\u00f9ng c\u01a1 s\u1ed1 ( ho\u1eb7c c\u00f9ng s\u1ed1 m\u0169 \u0111\u1ec3 so s\u00e1nh)<br\/>B\u01b0\u1edbc 3: Ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang<\/span> <br\/><br\/><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/> Ta c\u00f3: $|-81|^{8}$ = $81^{8}$ = $(3^{4})^{8}$ = $3^{4 . 8}$ = $3^{32}$; $|-27|^{11}$ = $27^{11}$ = $(3^{3})^{11}$ = $3^{3 . 11}$ = $3^{33}$<br\/>M\u00e0 $3^{32}$ < $(3^{33})$<br\/>N\u00ean $|-81|^{8}$ < $|-27|^{11}$<br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: <span class='basic_pink'> <<\/span><\/span><\/span> <br\/> ","column":3}]}],"id_ques":990}],"lesson":{"save":0,"level":3}}