{"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":[[["-42"," -42","-42 "," -42 ","- 42"," - 42","-42 "]]],"list":[{"point":5,"width":60,"type_input":"","ques":"<center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai20/lv2/img\/2.jpg' \/><\/center>(-12) + (-14) + (-16) = _input_","hint":"","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/>Bi\u1ec3u th\u1ee9c ch\u1ee9a ph\u00e9p t\u00ednh c\u1ed9ng n\u00ean ta th\u1ef1c hi\u1ec7n t\u00ednh l\u1ea7n l\u01b0\u1ee3t t\u1eeb tr\u00e1i qua ph\u1ea3i<br\/><b>L\u01b0u \u00fd:<\/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\/>Ta c\u00f3: <br\/>$\\begin{align*}&(-12) + (-14) + (-16) \\\\&= [- (12 + 14)] + (-16) \\\\&= (-26) + (-16)\\\\&= -(26 + 16)\\\\&= -42\\end{align*}$<br\/>V\u1eady s\u1ed1 c\u1ea7n \u0111i\u1ec1n v\u00e0o \u00f4 tr\u1ed1ng l\u00e0: <span class='basic_pink'> -42<\/span><\/span> <br\/> "}]}],"id_ques":961},{"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":[[["-148"," -148","-148 "," -148 ","- 148"," - 148","-148 "]]],"list":[{"point":5,"width":60,"type_input":"","ques":"<center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai20/lv2/img\/4.jpg' \/><\/center>(-35) + (-42) + (-71) = _input_","hint":"","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/>Bi\u1ec3u th\u1ee9c ch\u1ee9a ph\u00e9p t\u00ednh c\u1ed9ng n\u00ean ta th\u1ef1c hi\u1ec7n t\u00ednh l\u1ea7n l\u01b0\u1ee3t t\u1eeb tr\u00e1i qua ph\u1ea3i<br\/><b>L\u01b0u \u00fd:<\/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\/>Ta c\u00f3: <br\/>$\\begin{align*}&(-35) + (-42) + (-71) \\\\&= [- (35 + 42)] + (-71) \\\\&= (-77) + (-71)\\\\&= -(77 + 71)\\\\&= -148\\end{align*}$<br\/>V\u1eady s\u1ed1 c\u1ea7n \u0111i\u1ec1n v\u00e0o \u00f4 tr\u1ed1ng l\u00e0: <span class='basic_pink'> -148<\/span><\/span> <br\/> "}]}],"id_ques":962},{"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":[[["-189"," -189","-189 "," -189 ","- 189"," - 189","-189 "]]],"list":[{"point":5,"width":60,"type_input":"","ques":"<center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai20/lv2/img\/8.jpg' \/><\/center>(-61) + (-38) + (-90) = _input_","hint":"","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/>Bi\u1ec3u th\u1ee9c ch\u1ee9a ph\u00e9p t\u00ednh c\u1ed9ng n\u00ean ta th\u1ef1c hi\u1ec7n t\u00ednh l\u1ea7n l\u01b0\u1ee3t t\u1eeb tr\u00e1i qua ph\u1ea3i<br\/><b>L\u01b0u \u00fd:<\/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\/>Ta c\u00f3: <br\/>$\\begin{align*}&(-61) + (-38) + (-90) \\\\&= [- (61 + 38)] + (-90) \\\\&= (-99) + (-90)\\\\&= -(99 + 90)\\\\&= -189\\end{align*}$<br\/>V\u1eady s\u1ed1 c\u1ea7n \u0111i\u1ec1n v\u00e0o \u00f4 tr\u1ed1ng l\u00e0: <span class='basic_pink'> -189<\/span><\/span> <br\/> "}]}],"id_ques":963},{"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":" <center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai20/lv2/img\/4.jpg'\/><\/center> 39 412 + |-3 851| = <span class='basic_hoi_black'>?<\/span> ","select":["A. 35 561","B. -35 561 ","C. 43 263","D. -43 262"],"hint":" Ph\u00e1 d\u1ea5u gi\u00e1 tr\u1ecb tuy\u1ec7t \u0111\u1ed1i r\u1ed3i th\u1ef1c hi\u1ec7n ph\u00e9p t\u00ednh c\u1ed9ng nh\u01b0 c\u1ed9ng hai s\u1ed1 t\u1ef1 nhi\u00ean.","explain":" <span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/>Ph\u00e1 d\u1ea5u gi\u00e1 tr\u1ecb tuy\u1ec7t \u0111\u1ed1i r\u1ed3i th\u1ef1c hi\u1ec7n ph\u00e9p t\u00ednh c\u1ed9ng nh\u01b0 c\u1ed9ng hai s\u1ed1 t\u1ef1 nhi\u00ean<br\/><b>L\u01b0u \u00fd:<\/b><br\/> Gi\u00e1 tr\u1ecb tuy\u1ec7t \u0111\u1ed1i c\u1ee7a m\u1ed9t s\u1ed1 nguy\u00ean d\u01b0\u01a1ng l\u00e0 ch\u00ednh n\u00f3<br\/>Gi\u00e1 tr\u1ecb tuy\u1ec7t \u0111\u1ed1i c\u1ee7a s\u1ed1 nguy\u00ean \u00e2m l\u00e0 s\u1ed1 \u0111\u1ed1i c\u1ee7a n\u00f3 (v\u00e0 l\u00e0 m\u1ed9t s\u1ed1 nguy\u00ean d\u01b0\u01a1ng).<\/span> <br\/><br\/><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/>$\\begin{align*} 39 412 + |-3 851| &= 39 412 + 3 851\\\\&= 43 263\\end{align*}$<br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: <span class='basic_pink'> C. 43 263<\/span><\/span> <br\/> ","column":2}]}],"id_ques":964},{"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":" <center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai20/lv2/img\/5.jpg'\/><\/center> |-39 410| + |38 102| = <span class='basic_hoi_black'>?<\/span> ","select":["A. 77 512","B. -77 512 ","C. 1 308","D. -1 308"],"hint":" Ph\u00e1 d\u1ea5u gi\u00e1 tr\u1ecb tuy\u1ec7t \u0111\u1ed1i r\u1ed3i th\u1ef1c hi\u1ec7n ph\u00e9p t\u00ednh c\u1ed9ng nh\u01b0 c\u1ed9ng hai s\u1ed1 t\u1ef1 nhi\u00ean.","explain":" <span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/>Ph\u00e1 d\u1ea5u gi\u00e1 tr\u1ecb tuy\u1ec7t \u0111\u1ed1i r\u1ed3i th\u1ef1c hi\u1ec7n ph\u00e9p t\u00ednh c\u1ed9ng nh\u01b0 c\u1ed9ng hai s\u1ed1 t\u1ef1 nhi\u00ean.<br\/><b>L\u01b0u \u00fd:<\/b><br\/> Gi\u00e1 tr\u1ecb tuy\u1ec7t \u0111\u1ed1i c\u1ee7a m\u1ed9t s\u1ed1 nguy\u00ean d\u01b0\u01a1ng l\u00e0 ch\u00ednh n\u00f3<br\/>Gi\u00e1 tr\u1ecb tuy\u1ec7t \u0111\u1ed1i c\u1ee7a s\u1ed1 nguy\u00ean \u00e2m l\u00e0 s\u1ed1 \u0111\u1ed1i c\u1ee7a n\u00f3 (v\u00e0 l\u00e0 m\u1ed9t s\u1ed1 nguy\u00ean d\u01b0\u01a1ng).<\/b><\/span> <br\/><br\/><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/>$\\begin{align*} |-39 410| + |38 102| &= 39 410 + 38 102\\\\&= 77 512\\end{align*}$<br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: <span class='basic_pink'> A. 77 512<\/span><\/span> <br\/> ","column":2}]}],"id_ques":965},{"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":" (-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}$<br\/>M\u00e0 -230 < -212 <br\/>N\u00ean (-38) + (-192) < (-47) + (-165)<br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: <span class='basic_pink'> <<\/span><\/span> <br\/> ","column":3}]}],"id_ques":966},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":5,"ques":" (-3917) + (-638) <span class='basic_hoi_black'>?<\/span> (-2038) + (-2517)","select":[" >"," < "," = "],"hint":" T\u00ednh k\u1ebft qu\u1ea3 c\u1ee7a t\u1eebng v\u1ebf r\u1ed3i so s\u00e1nh","explain":" <span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/>T\u00ednh k\u1ebft qu\u1ea3 c\u1ee7a t\u1eebng v\u1ebf r\u1ed3i so s\u00e1nh<br\/><i><b> L\u01b0u \u00fd: <\/i><\/b> Mu\u1ed1n c\u1ed9ng hai s\u1ed1 nguy\u00ean \u00e2m, ta c\u1ed9ng hai gi\u00e1 tr\u1ecb tuy\u1ec7t \u0111\u1ed1i c\u1ee7a ch\u00fang r\u1ed3i \u0111\u1eb7t d\u1ea5u ( - ) tr\u01b0\u1edbc k\u1ebft qu\u1ea3<\/span> <br\/><br\/><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/>$ \\underbrace{(-3917) + (-638)}_{-4555}$ <span class='basic_hoi_black'>?<\/span> $ \\underbrace{(-2038) + (-2517)}_{-4555}$ <br\/>N\u00ean (-3917) + (-638) = (-2038) + (-2517)<br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: <span class='basic_pink'> =<\/span><\/span> <br\/> ","column":3}]}],"id_ques":967},{"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":" (-3642) + (-581) <span class='basic_hoi_black'>?<\/span> (-3307) + (-1249)","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{(-3642) + (-581)}_{-4223}$ <span class='basic_hoi_black'>?<\/span> $ \\underbrace{(-3307) + (-1249)}_{-4556}$<br\/>M\u00e0 -4223 > -4556 <br\/>N\u00ean (-3642) + (-581) > (-3307) + (-1249)<br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: <span class='basic_pink'> ><\/span><\/span> <br\/> ","column":3}]}],"id_ques":968},{"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":" <center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai20/lv2/img\/4.jpg'\/><\/center> T\u1ed5ng c\u1ee7a -624 v\u00e0 -392 l\u00e0: ","select":["A. 1016","B. -1016 ","C. -1116","D. 1116"],"hint":" T\u1ed5ng t\u1ee9c l\u00e0 ph\u00e9p t\u00ednh c\u1ed9ng","explain":" <span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/>T\u1ed5ng t\u1ee9c l\u00e0 th\u1ef1c hi\u1ec7n ph\u00e9p t\u00ednh c\u1ed9ng.<\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/>T\u1ed5ng c\u1ee7a -624 v\u00e0 -392 l\u00e0:<br\/>(-624) + (-392) = - (624 + 392) = -1016<br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: <span class='basic_pink'>B. -1016<\/span><\/span> <br\/>","column":2}]}],"id_ques":969},{"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":" <center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai20/lv2/img\/4.jpg'\/><\/center> T\u1ed5ng c\u1ee7a -9102 v\u00e0 -415 l\u00e0: ","select":["A. -9517","B. 9517 ","C. 9527","D. -9527"],"hint":" T\u1ed5ng t\u1ee9c l\u00e0 ph\u00e9p t\u00ednh c\u1ed9ng","explain":" <span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/>T\u1ed5ng t\u1ee9c l\u00e0 th\u1ef1c hi\u1ec7n ph\u00e9p t\u00ednh c\u1ed9ng.<\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/>T\u1ed5ng c\u1ee7a -9102 v\u00e0 -415 l\u00e0:<br\/>(-9102) + (-415) = - (9102 + 415) = -9517<br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: <span class='basic_pink'> A. -9517<\/span><\/span> <br\/>","column":2}]}],"id_ques":970},{"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":" T\u00ednh gi\u00e1 tr\u1ecb c\u1ee7a bi\u1ec3u th\u1ee9c:<br\/>A = x + (-35147) v\u1edbi x = -2150 ","select":["A = 37 297","A = -37 297","A = 36 297","A = -36 297"],"hint":" Thay gi\u00e1 tr\u1ecb c\u1ee7a x v\u00e0o bi\u1ec3u th\u1ee9c r\u1ed3i t\u00ednh","explain":" <span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/>B\u01b0\u1edbc 1: Thay gi\u00e1 tr\u1ecb c\u1ee7a x v\u00e0o bi\u1ec3u th\u1ee9c<br\/>B\u01b0\u1edbc 2: T\u00ednh gi\u00e1 tr\u1ecb bi\u1ec3u th\u1ee9c<br\/><b>L\u01b0u \u00fd: <\/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\/>Thay x = -2150 v\u00e0o bi\u1ec3u th\u1ee9c A = x + (-35147) ta \u0111\u01b0\u1ee3c:<br\/>$\\begin{align*}A&= (-21 50) + (-35 147) \\\\&= - (2 150 + 35 147) \\\\&= -37 297\\end{align*}$<br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: <span class='basic_pink'>A = -37 297<\/span><\/span> <br\/>","column":2}]}],"id_ques":971},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":" T\u00ednh gi\u00e1 tr\u1ecb c\u1ee7a bi\u1ec3u th\u1ee9c:<br\/>A = (-562) + (-417) + x v\u1edbi x = -111 ","select":["A = -1090","A = -868","A = -1144","A = -1080"],"hint":" Thay gi\u00e1 tr\u1ecb c\u1ee7a x v\u00e0o bi\u1ec3u th\u1ee9c r\u1ed3i t\u00ednh","explain":" <span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/>B\u01b0\u1edbc 1: Thay gi\u00e1 tr\u1ecb c\u1ee7a x v\u00e0o bi\u1ec3u th\u1ee9c<br\/>B\u01b0\u1edbc 2: T\u00ednh gi\u00e1 tr\u1ecb bi\u1ec3u th\u1ee9c, <b>(Bi\u1ec3u th\u1ee9c ch\u1ec9 c\u00f3 ph\u00e9p t\u00ednh c\u1ed9ng n\u00ean ta th\u1ef1c hi\u1ec7n t\u00ednh l\u1ea7n l\u01b0\u1ee3t t\u1eeb tr\u00e1i qua ph\u1ea3i)<\/b><br\/><b>L\u01b0u \u00fd: <\/b> Mu\u1ed1n c\u1ed9ng hai s\u1ed1 nguy\u00ean \u00e2m, ta c\u1ed9ng hai gi\u00e1 tr\u1ecb tuy\u1ec7t \u0111\u1ed1i c\u1ee7a ch\u00fang r\u1ed3i \u0111\u1eb7t d\u1ea5u ( - ) tr\u01b0\u1edbc k\u1ebft qu\u1ea3.<\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/>Thay x = -111 v\u00e0o bi\u1ec3u th\u1ee9c A = (-562) + (-417) + x ta \u0111\u01b0\u1ee3c:<br\/>$\\begin{align*}A&= (-562) + (-417) + (-111) \\\\&= [- (562 + 417)] + (-111)\\\\&=(-979) + (-111)\\\\&= -(979 + 111)\\\\&= -1090\\end{align*}$<br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: <span class='basic_pink'>A = -1090<\/span><\/span> <br\/>","column":2}]}],"id_ques":972},{"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":" T\u1ed5ng c\u1ee7a s\u1ed1 nguy\u00ean \u00e2m nh\u1ecf nh\u1ea5t c\u00f3 3 ch\u1eef s\u1ed1 v\u00e0 (-523) b\u1eb1ng: ","select":["A. 1522","B. -1522","C. 476","D. -476"],"hint":" T\u00ecm s\u1ed1 nguy\u00ean \u00e2m nh\u1ecf nh\u1ea5t c\u00f3 3 ch\u1eef s\u1ed1 r\u1ed3i t\u00ednh t\u1ed5ng c\u1ee7a s\u1ed1 v\u1eeba t\u00ecm v\u1edbi (-523)","explain":" <span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/>B\u01b0\u1edbc 1: T\u00ecm s\u1ed1 nguy\u00ean \u00e2m nh\u1ecf nh\u1ea5t c\u00f3 3 ch\u1eef s\u1ed1<br\/>B\u01b0\u1edbc 2: T\u00ednh t\u1ed5ng c\u1ee7a s\u1ed1 v\u1eeba t\u00ecm v\u1edbi (-523)<br\/><b>L\u01b0u \u00fd: <\/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\/>S\u1ed1 nguy\u00ean \u00e2m nh\u1ecf nh\u1ea5t c\u00f3 3 ch\u1eef s\u1ed1 l\u00e0: -999<br\/>T\u1ed5ng c\u1ee7a s\u1ed1 nguy\u00ean \u00e2m nh\u1ecf nh\u1ea5t c\u00f3 3 ch\u1eef s\u1ed1 v\u00e0 (-523) l\u00e0:<br\/>(-999) + (-523) = - (999 + 523) = -1522<br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0:<span class='basic_pink'>B. -1522<\/span><\/span> <br\/>","column":2}]}],"id_ques":973},{"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":" T\u1ed5ng c\u1ee7a s\u1ed1 nguy\u00ean \u00e2m l\u1edbn nh\u1ea5t c\u00f3 2 ch\u1eef s\u1ed1 v\u00e0 (-72) b\u1eb1ng: ","select":["A. 62","B. -62","C. -82","D. 82"],"hint":" T\u00ecm s\u1ed1 nguy\u00ean \u00e2m l\u1edbn nh\u1ea5t c\u00f3 2 ch\u1eef s\u1ed1 r\u1ed3i t\u00ednh t\u1ed5ng c\u1ee7a s\u1ed1 v\u1eeba t\u00ecm v\u1edbi (-72)","explain":" <span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/>B\u01b0\u1edbc 1: T\u00ecm s\u1ed1 nguy\u00ean \u00e2m l\u1edbn nh\u1ea5t c\u00f3 2 ch\u1eef s\u1ed1<br\/>B\u01b0\u1edbc 2: T\u00ednh t\u1ed5ng c\u1ee7a s\u1ed1 v\u1eeba t\u00ecm v\u1edbi (-72)<br\/><b>L\u01b0u \u00fd: <\/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\/>S\u1ed1 nguy\u00ean \u00e2m l\u1edbn nh\u1ea5t c\u00f3 2 ch\u1eef s\u1ed1 l\u00e0: -10<br\/>T\u1ed5ng c\u1ee7a s\u1ed1 nguy\u00ean l\u1edbn nh\u1ecf nh\u1ea5t c\u00f3 2 ch\u1eef s\u1ed1 v\u00e0 (-72) l\u00e0:<br\/>(-10) + (-72) = - (10 + 72) = -82<br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0:<span class='basic_pink'>C. -82<\/span><\/span> <br\/>","column":2}]}],"id_ques":974},{"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\u00ednh t\u1ed5ng c\u1ee7a c\u00e1c s\u1ed1 nguy\u00ean x, bi\u1ebft: -8 < x < -3. T\u1ed5ng l\u00e0:","select":["A. -22","B. -25","C. -33","D. -30"],"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 th\u1ecfa m\u00e3n -8 < x < -3<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<br\/><b>L\u01b0u \u00fd: <\/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\/>-8 < x < -3 n\u00ean x $\\in$ {-7; -6; -5; -4 }<br\/>T\u1ed5ng c\u00e1c s\u1ed1 nguy\u00ean x l\u00e0: <br\/>$\\begin{align*}&(-7) + (-6) + (-5) + (-4)\\\\&= [- (7 + 6)] + (-5) + (-4)\\\\&= (-13) + (-5) + (-4) \\\\&= [-(13 + 5)] + (-4)\\\\&=(-18) + (-4)\\\\&= - (18 + 4)\\\\& = -22\\end{align*}$<br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0:<span class='basic_pink'>A. -22<\/span><\/span> <br\/>","column":2}]}],"id_ques":975},{"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":" T\u00ednh t\u1ed5ng c\u1ee7a c\u00e1c s\u1ed1 nguy\u00ean x, bi\u1ebft: -5 < x < 0. T\u1ed5ng l\u00e0:","select":["A. -15","B. -10","C. -9","D. -16"],"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 th\u1ecfa m\u00e3n -5 < x < 0<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<br\/><b>L\u01b0u \u00fd: <\/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\/>-5 < x < 0 n\u00ean x $\\in$ {-4; -3; -2; -1 }<br\/>T\u1ed5ng c\u00e1c s\u1ed1 nguy\u00ean x l\u00e0: <br\/>$\\begin{align*}&(-4) + (-3) + (-2) + (-1)\\\\&= [- (4 + 3)] + (-2) + (-1)\\\\&= (-7) + (-2) + (-1) \\\\&= [-(7 + 2)] + (-1)\\\\&=(-9) + (-1)\\\\&= - (9 + 1)\\\\& = -10\\end{align*}$<br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0:<span class='basic_pink'> B. -10<\/span><\/span> <br\/>","column":2}]}],"id_ques":976},{"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":" T\u00ednh t\u1ed5ng c\u1ee7a c\u00e1c s\u1ed1 nguy\u00ean x, bi\u1ebft: -12 < x < -8. T\u1ed5ng l\u00e0:","select":["A. -50","B. -42","C. -38","D. -30"],"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 th\u1ecfa m\u00e3n -12 < x < -8<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<br\/><b>L\u01b0u \u00fd: <\/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\/>-12 < x < -8 n\u00ean x $\\in$ {-11; -10; -9 }<br\/>T\u1ed5ng c\u00e1c s\u1ed1 nguy\u00ean x l\u00e0: <br\/>$\\begin{align*}&(-11) + (-10) + (-9)\\\\&= [- (11 + 10)] + (-9) \\\\&= (-21) + (-9) \\\\&= [-(21 + 9)] \\\\&= -30\\end{align*}$<br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0:<span class='basic_pink'>D. -30<\/span><\/span> <br\/>","column":2}]}],"id_ques":977},{"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":" T\u00ednh gi\u00e1 tr\u1ecb bi\u1ec3u th\u1ee9c:<br\/>A = |-38| + 2710 + |-25|","select":["A = 2647","A = -2647","A = 2773","A = -2773"],"hint":"","explain":" <span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/>B\u01b0\u1edbc 1: T\u00ednh c\u00e1c gi\u00e1 tr\u1ecb tuy\u1ec7t \u0111\u1ed1i<br\/>B\u01b0\u1edbc 2: T\u00ednh gi\u00e1 tr\u1ecb c\u1ee7a bi\u1ec3u th\u1ee9c,<b> (bi\u1ec3u th\u1ee9c ch\u1ec9 c\u00f3 ph\u00e9p t\u00ednh c\u1ed9ng n\u00ean ta th\u1ef1c hi\u1ec7n t\u00ednh l\u1ea7n l\u01b0\u1ee3t t\u1eeb tr\u00e1i qua ph\u1ea3i)<\/b><br\/><b>L\u01b0u \u00fd: <\/b><br\/> Gi\u00e1 tr\u1ecb tuy\u1ec7t \u0111\u1ed1i c\u1ee7a m\u1ed9t s\u1ed1 nguy\u00ean d\u01b0\u01a1ng l\u00e0 ch\u00ednh n\u00f3<br\/>Gi\u00e1 tr\u1ecb tuy\u1ec7t \u0111\u1ed1i c\u1ee7a m\u1ed9t s\u1ed1 nguy\u00ean \u00e2m l\u00e0 s\u1ed1 \u0111\u1ed1i c\u1ee7a n\u00f3( v\u00e0 l\u00e0 m\u1ed9t s\u1ed1 nguy\u00ean d\u01b0\u01a1ng).<\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/> $\\begin{align*}A&= |-38| + 2710 + |-25|\\\\A&= 38 + 2710 + 25 \\\\A&= 2748 + 25 \\\\A&= 2773\\end{align*}$<br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: <span class='basic_pink'> A = 2773<\/span><\/span><\/span> <br\/>","column":2}]}],"id_ques":978},{"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":" T\u00ednh gi\u00e1 tr\u1ecb bi\u1ec3u th\u1ee9c:<br\/>A = |3712| + |-2215|","select":["A = 1497","A = -1497","A = 5927","A = -5927"],"hint":"","explain":" <span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/>B\u01b0\u1edbc 1: T\u00ednh c\u00e1c gi\u00e1 tr\u1ecb tuy\u1ec7t \u0111\u1ed1i<br\/>B\u01b0\u1edbc 2: T\u00ednh gi\u00e1 tr\u1ecb c\u1ee7a bi\u1ec3u th\u1ee9c<br\/><b>L\u01b0u \u00fd: <\/b><br\/> Gi\u00e1 tr\u1ecb tuy\u1ec7t \u0111\u1ed1i c\u1ee7a m\u1ed9t s\u1ed1 nguy\u00ean d\u01b0\u01a1ng l\u00e0 ch\u00ednh n\u00f3<br\/>Gi\u00e1 tr\u1ecb tuy\u1ec7t \u0111\u1ed1i c\u1ee7a m\u1ed9t s\u1ed1 nguy\u00ean \u00e2m l\u00e0 s\u1ed1 \u0111\u1ed1i c\u1ee7a n\u00f3( v\u00e0 l\u00e0 m\u1ed9t s\u1ed1 nguy\u00ean d\u01b0\u01a1ng).<\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/> $\\begin{align*}A&= |-3712| + |-2215|\\\\A&= 3712 + 2215\\\\A&= 5927\\end{align*}$<br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: <span class='basic_pink'> A = 5927<\/span><\/span><\/span> <br\/>","column":2}]}],"id_ques":979},{"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":" <center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai20/lv2/img\/2.jpg' \/><\/center>Khi nhi\u1ec7t \u0111\u1ed9 t\u0103ng $t^oC$ v\u1edbi t = 10 \u0111\u01b0\u1ee3c hi\u1ec3u l\u00e0:","select":["A. Nhi\u1ec7t \u0111\u1ed9 t\u0103ng $10^oC$","B. Nhi\u1ec7t \u0111\u1ed9 t\u0103ng $-10^oC$","C. Nhi\u1ec7t \u0111\u1ed9 gi\u1ea3m $10^oC$","D. Nhi\u1ec7t \u0111\u1ed9 gi\u1ea3m $-10^oC$"],"hint":"","explain":" <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/>Nhi\u1ec7t \u0111\u1ed9 t\u0103ng $t^oC$ v\u1edbi t = 10 c\u00f3 ngh\u0129a l\u00e0 nhi\u1ec7t \u0111\u1ed9 t\u0103ng $10^oC$<br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: <span class='basic_pink'>A. Nhi\u1ec7t \u0111\u1ed9 t\u0103ng $10^oC$<\/span><\/span> <br\/>","column":2}]}],"id_ques":980}],"lesson":{"save":0,"level":2}}