{"segment":[{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":10,"ques":"Ch\u1ecdn c\u00e2u \u0111\u00fang trong c\u00e1c c\u00e2u sau:","select":["A. \u0110\u1ed9 chia nh\u1ecf nh\u1ea5t c\u1ee7a th\u01b0\u1edbc l\u00e0 \u0111\u1ed9 d\u00e0i gi\u1eefa hai v\u1ea1ch chia li\u00ean ti\u1ebfp tr\u00ean th\u01b0\u1edbc.","B. \u0110\u1ed9 chia nh\u1ecf nh\u1ea5t c\u1ee7a th\u01b0\u1edbc l\u00e0 chi\u1ec1u d\u00e0i nh\u1ecf nh\u1ea5t c\u1ee7a v\u1eadt m\u00e0 th\u01b0\u1edbc c\u00f3 th\u1ec3 \u0111o \u0111\u01b0\u1ee3c.","C. \u0110\u1ed9 chia nh\u1ecf nh\u1ea5t c\u1ee7a th\u01b0\u1edbc l\u00e0 1 mm.","D. \u0110\u1ed9 chia nh\u1ecf nh\u1ea5t c\u1ee7a th\u01b0\u1edbc l\u00e0 kho\u1ea3ng c\u00e1ch gi\u1eefa hai v\u1ea1ch c\u00f3 in s\u1ed1 li\u00ean ti\u1ebfp c\u1ee7a th\u01b0\u1edbc."],"hint":"","explain":"<span class='basic_left'><br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 A.<\/span><\/span> ","column":1}]}],"id_ques":2291},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":10,"ques":"M\u1ed9t b\u1ea1n d\u00f9ng th\u01b0\u1edbc \u0111o \u0111\u1ed9 d\u00e0i c\u00f3 \u0110CNN l\u00e0 0,2cm \u0111\u1ec3 \u0111o \u0111\u1ed9 d\u00e0i cu\u1ed1n s\u00e1ch gi\u00e1o khoa V\u1eadt l\u00ed 6. Trong c\u00e1c c\u00e1ch ghi k\u1ebft qu\u1ea3 \u0111o d\u01b0\u1edbi \u0111\u00e2y, c\u00e1ch ghi n\u00e0o l\u00e0 \u0111\u00fang?","select":["A. 240mm.","B. 23cm.","C. 24cm.","D. 24,0cm."],"hint":"","explain":"<span class='basic_left'>V\u00ec th\u01b0\u1edbc \u0111o \u0111\u1ed9 d\u00e0i c\u00f3 \u0110CNN l\u00e0 0,2cm n\u00ean ph\u1ea3i ghi 1 ch\u1eef s\u1ed1 sau d\u1ea5u ph\u1ea9y.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 D.<\/span><\/span> ","column":2}]}],"id_ques":2292},{"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":"C\u00e2u n\u00e0o sau \u0111\u00e2y \u0111\u00fang khi n\u00f3i v\u1ec1 quy t\u1eafc \u0111\u1eb7t m\u1eaft \u0111\u1ecdc k\u1ebft qu\u1ea3 \u0111o.","select":["A. \u0110\u1eb7t m\u1eaft nh\u00ecn theo h\u01b0\u1edbng xi\u00ean sang ph\u1ea3i","B. \u0110\u1eb7t m\u1eaft nh\u00ecn theo h\u01b0\u1edbng sang tr\u00e1i.","C. \u0110\u1eb7t m\u1eaft nh\u00ecn theo h\u01b0\u1edbng vu\u00f4ng g\u00f3c v\u1edbi c\u1ea1nh c\u1ee7a th\u01b0\u1edbc t\u1ea1i \u0111\u1ea7u kia c\u1ee7a m\u1ed9t v\u1eadt.","D. \u0110\u1eb7t m\u1eaft nh\u01b0 th\u1ebf n\u00e0o l\u00e0 t\u00f9y \u00fd."],"hint":"","explain":"<span class='basic_left'><br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":1}]}],"id_ques":2293},{"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":"Khi \u0111o nhi\u1ec1u l\u1ea7n m\u1ed9t \u0111\u1ea1i l\u01b0\u1ee3ng m\u00e0 thu \u0111\u01b0\u1ee3c nhi\u1ec1u gi\u00e1 tr\u1ecb kh\u00e1c nhau, th\u00ec gi\u00e1 tr\u1ecb n\u00e0o sau \u0111\u00e2y \u0111\u01b0\u1ee3c l\u1ea5y l\u00e0m k\u1ebft qu\u1ea3 c\u1ee7a ph\u00e9p \u0111o?","select":["A. Gi\u00e1 tr\u1ecb c\u1ee7a l\u1ea7n \u0111o cu\u1ed1i c\u00f9ng.","B. Gi\u00e1 tr\u1ecb trung b\u00ecnh c\u1ee7a gi\u00e1 tr\u1ecb l\u1edbn nh\u1ea5t v\u00e0 gi\u00e1 tr\u1ecb nh\u1ecf nh\u1ea5t.","C. Gi\u00e1 tr\u1ecb trung b\u00ecnh c\u1ee7a t\u1ea5t c\u1ea3 c\u00e1c gi\u00e1 tr\u1ecb \u0111o \u0111\u01b0\u1ee3c.","D. Gi\u00e1 tr\u1ecb \u0111\u01b0\u1ee3c l\u1eb7p l\u1ea1i nhi\u1ec1u l\u1ea7n nh\u1ea5t."],"hint":"","explain":"<span class='basic_left'>gi\u00e1 tr\u1ecb \u0111o c\u1ee7a m\u1ed9t \u0111\u1ea1i l\u01b0\u1ee3ng b\u1eb1ng gi\u00e1 tr\u1ecb trung b\u00ecnh c\u1ee7a t\u1ea5t c\u1ea3 c\u00e1c gi\u00e1 tr\u1ecb \u0111o \u0111\u01b0\u1ee3c.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":1}]}],"id_ques":2294},{"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":"Ch\u1ecdn c\u00e2u so s\u00e1nh \u0111\u00fang:","select":["A. 0,5m = 5000mm","B. 100dm < 1m","C. 40m > 300dm","D. 0,9cm = 9dm"],"hint":"","explain":"<span class='basic_left'>1m = 10dm, 1dm = 10cm.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":2}]}],"id_ques":2295},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":10,"ques":"B\u1ed1 c\u1ee7a T\u0169n l\u00e0 th\u1ee3 m\u1ed9c, b\u1ed1 nh\u1edd T\u0169n mua 10 g \u0111inh 5 ph\u00e2n. \u0110inh 5 ph\u00e2n c\u00f3 ngh\u0129a l\u00e0:","select":["A. Chi\u1ec1u d\u00e0i c\u1ee7a \u0111inh l\u00e0 5 cm","B. Chi\u1ec1u d\u00e0i c\u1ee7a \u0111inh l\u00e0 5 mm","C. Chi\u1ec1u d\u00e0i c\u1ee7a \u0111inh l\u00e0 5 dm","D. T\u1ea5t c\u1ea3 \u0111\u1ec1u sai"],"hint":"","explain":"<span class='basic_left'>\u0110inh 5 ph\u00e2n c\u00f3 ngh\u0129a l\u00e0 chi\u1ec1u d\u00e0i c\u1ee7a \u0111inh l\u00e0 5 cm<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 A.<\/span><\/span> ","column":1}]}],"id_ques":2296},{"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":"<span class='basic_left'>Trong ph\u00e9p \u0111o \u0111\u1ed9 d\u00e0i c\u1ee7a m\u1ed9t v\u1eadt, c\u00f3 5 sai s\u1ed1 th\u01b0\u1eddng g\u1eb7p sau \u0111\u00e2y:<br\/>(I). Th\u01b0\u1edbc kh\u00f4ng th\u1eadt th\u1eb3ng.<br\/>(II). V\u1ea1ch chia kh\u00f4ng \u0111\u1ec1u.<br\/>(III). \u0110\u1eb7t th\u01b0\u1edbc kh\u00f4ng d\u1ecdc theo chi\u1ec1u d\u00e0i c\u1ee7a v\u1eadt.<br\/>(IV). \u0110\u1eb7t m\u1eaft nh\u00ecn l\u1ec7ch.<br\/>(V). M\u1ed9t \u0111\u1ea7u c\u1ee7a v\u1eadt kh\u00f4ng \u0111\u00fang v\u1ea1ch s\u1ed1 0 c\u1ee7a th\u01b0\u1edbc.<br\/>Sai s\u1ed1 m\u00e0 ng\u01b0\u1eddi \u0111o c\u00f3 th\u1ec3 kh\u1eafc ph\u1ee5c \u0111\u01b0\u1ee3c l\u00e0:<\/span>","select":["A. (I) v\u00e0 (II)","B. (III); (IV) v\u00e0 (V)","C. (I), (III); (IV) v\u00e0 (V)","D. C\u1ea3 5 sai s\u1ed1 ng\u01b0\u1eddi \u0111o \u0111\u1ec1u kh\u00f4ng th\u1ec3 kh\u1eafc ph\u1ee5c \u0111\u01b0\u1ee3c."],"hint":"","explain":"<span class='basic_left'>Ch\u1ec9 duy nh\u1ea5t v\u1ea1ch chia kh\u00f4ng \u0111\u1ec1u l\u00e0 ta kh\u00f4ng th\u1ec3 kh\u1eafc ph\u1ee5c \u0111\u01b0\u1ee3c.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":1}]}],"id_ques":2297},{"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":"\u0110\u1ec3 \u0111o k\u00edch th\u01b0\u1edbc c\u1ee7a m\u1ed9t th\u1eeda ru\u1ed9ng, d\u00f9ng th\u01b0\u1edbc n\u00e0o sau \u0111\u00e2y l\u00e0 h\u1ee3p l\u00fd nh\u1ea5t:","select":["A. Th\u01b0\u1edbc th\u1eb3ng c\u00f3 GH\u0110 1m; \u0110CNN 1 cm","B. Th\u01b0\u1edbc th\u1eb3ng c\u00f3 GH\u0110 1,5m; \u0110CNN 10cm","C. Th\u01b0\u1edbc cu\u1ed9n c\u00f3 GH\u0110 30m; \u0110CNN 10cm","D. Th\u01b0\u1edbc x\u1ebfp c\u00f3 GH\u0110 2m; \u0110CNN 1cm"],"hint":"","explain":"<span class='basic_left'>S\u1eed d\u1ee5ng th\u01b0\u1edbc cu\u1ed9n c\u00f3 \u0111\u1ed9 d\u00e0i l\u1edbn \u0111\u1ec3 \u0111o nh\u1eefng k\u00edch th\u01b0\u1edbc l\u1edbn.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":1}]}],"id_ques":2298},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":10,"ques":"<span class='basic_left'>D\u00f9ng m\u1ed9t s\u1ee3i ch\u1ec9 qu\u1ea5n \u0111\u1ec1u 20 v\u00f2ng l\u00ean than b\u00fat ch\u00ec (m\u1ed7i v\u00f2ng s\u00e1t nhau v\u00e0 kh\u00f4ng ch\u1ed3ng ch\u00e9o l\u00ean nhau).<br\/>D\u00f9ng th\u01b0\u1edbc th\u1eb3ng \u0111o chi\u1ec1u d\u00e0i ph\u1ea7n \u0111\u01b0\u1ee3c qu\u1ea5n l\u00ean (tr\u00ean th\u00e2n c\u00e2y b\u00fat ch\u00ec) ta \u0111\u01b0\u1ee3c tr\u1ecb s\u1ed1 l\u00e0 0,5 cm.<br\/>\u0110\u01b0\u1eddng k\u00ednh c\u1ee7a s\u1ee3i ch\u1ec9 l\u00e0:<\/span>","select":["A. 0,25 cm","B. 2,5 cm","C. 0,0025 cm","D. 0,25 mm"],"hint":"","explain":"<span class='basic_left'>Chi\u1ec1u d\u00e0i ph\u1ea7n \u0111\u01b0\u1ee3c qu\u1ea5n l\u00e0: 0,5cm g\u1ed3m 20 v\u00f2ng d\u00e2y.<br\/>N\u00ean \u0111\u01b0\u1eddng k\u00ednh s\u1ee3i ch\u1ec9 l\u00e0 :$\\dfrac{0.5}{20}=0,025cm=0,25mm$<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 D.<\/span><\/span> ","column":2}]}],"id_ques":2299},{"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":"<span class='basic_left'> Tr\u00ean th\u01b0\u1edbc d\u00e2y c\u1ee7a ng\u01b0\u1eddi th\u1ee3 may c\u00f3 in ch\u1eef cm \u1edf \u0111\u1ea7u th\u01b0\u1edbc, s\u1ed1 b\u00e9 nh\u1ea5t v\u00e0 l\u1edbn nh\u1ea5t tr\u00ean th\u01b0\u1edbc l\u1ea7n l\u01b0\u1ee3t l\u00e0 0 v\u00e0 150. T\u1eeb v\u1ea1ch s\u1ed1 1 \u0111\u1ebfn v\u1ea1ch s\u1ed1 2 ng\u01b0\u1eddi ta \u0111\u1ebfm c\u00f3 t\u1ea5t c\u1ea3 11 v\u1ea1ch chia. GH\u0110 v\u00e0 \u0110CNN c\u1ee7a th\u01b0\u1edbc l\u1ea7n l\u01b0\u1ee3t l\u00e0:<\/span>","select":["A. 150 cm; 1 cm","B. 150 cm; 1 mm","C. 150 mm; 1 mm","D. 150 mm; 1 cm"],"hint":"","explain":"<span class='basic_left'>GH\u0110 l\u00e0 150cm.<br\/>T\u1eeb v\u1ea1ch s\u1ed1 1 \u0111\u1ebfn v\u1ea1ch s\u1ed1 2 c\u00f3 11 v\u1ea1ch, n\u00ean c\u00f3 10 kho\u1ea3ng.<br\/> V\u1eady \u0110CNN l\u00e0 $\\dfrac{1}{10}=0,1cm=1mm$ <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":2}]}],"id_ques":2300}],"lesson":{"save":0,"level":2}}