{"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":"Khi v\u1eadt r\u1eafn kh\u00f4ng b\u1ecf l\u1ecdt b\u00ecnh chia \u0111\u1ed9 th\u00ec th\u1ea3 v\u1eadt \u0111\u00f3 v\u00e0o trong b\u00ecnh tr\u00e0n.Th\u1ec3 t\u00edch c\u1ee7a ph\u1ea7n ch\u1ea5t l\u1ecfng tr\u00e0n ra:","select":["A. l\u1edbn h\u01a1n th\u1ec3 t\u00edch c\u1ee7a v\u1eadt","B. b\u1eb1ng th\u1ec3 t\u00edch c\u1ee7a v\u1eadt","C. nh\u1ecf h\u01a1n th\u1ec3 t\u00edch c\u1ee7a v\u1eadt","D. b\u1eb1ng m\u1ed9t n\u1eeda th\u1ec3 t\u00edch c\u1ee7a v\u1eadt"],"hint":"","explain":"<span class='basic_left'>Khi v\u1eadt r\u1eafn kh\u00f4ng b\u1ecf l\u1ecdt b\u00ecnh chia \u0111\u1ed9 th\u00ec th\u1ea3 v\u1eadt \u0111\u00f3 v\u00e0o trong b\u00ecnh tr\u00e0n.Th\u1ec3 t\u00edch c\u1ee7a ph\u1ea7n ch\u1ea5t l\u1ecfng tr\u00e0n ra b\u1eb1ng th\u1ec3 t\u00edch c\u1ee7a v\u1eadt.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":2}]}],"id_ques":2311},{"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":"B\u00ecnh chia \u0111\u1ed9 trong th\u00ed nghi\u1ec7m \u0111o th\u1ec3 t\u00edch c\u1ee7a v\u1eadt r\u1eafn kh\u00f4ng th\u1ea5m n\u01b0\u1edbc v\u00e0 kh\u00f4ng b\u1ecf l\u1ecdt v\u00e0o b\u00ecnh chia \u0111\u1ed9, d\u00f9ng \u0111\u1ec3 \u0111o th\u1ec3 t\u00edch c\u1ee7a:","select":["A. n\u01b0\u1edbc trong b\u00ecnh tr\u00e0n khi ch\u01b0a th\u1ea3 v\u1eadt r\u1eafn v\u00e0o","B. n\u01b0\u1edbc c\u00f2n l\u1ea1i trong b\u00ecnh tr\u00e0n sau khi \u0111\u00e3 th\u1ea3 v\u1eadt r\u1eafn v\u00e0o","C. n\u01b0\u1edbc tr\u00e0n v\u00e0o b\u00ecnh ch\u1ee9a ","D. n\u01b0\u1edbc c\u00f2n l\u1ea1i trong b\u00ecnh tr\u00e0n sau khi \u0111\u00e3 th\u1ea3 v\u1eadt r\u1eafn v\u00e0o v\u00e0 n\u01b0\u1edbc tr\u00e0n v\u00e0o b\u00ecnh ch\u1ee9a"],"hint":"","explain":"<span class='basic_left'>B\u00ecnh chia \u0111\u1ed9 trong th\u00ed nghi\u1ec7m tr\u00ean d\u00f9ng \u0111\u1ec3 \u0111o th\u1ec3 t\u00edch c\u1ee7a n\u01b0\u1edbc tr\u00e0n v\u00e0o b\u00ecnh ch\u1ee9a. \u0110\u00f3 c\u0169ng l\u00e0 th\u1ec3 t\u00edch v\u1eadt.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":1}]}],"id_ques":2312},{"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":"C\u00f4ng th\u1ee9c t\u00ednh th\u1ec3 t\u00edch c\u1ee7a v\u1eadt r\u1eafn khi \u0111o b\u1eb1ng b\u00ecnh chia \u0111\u1ed9:","select":["A. Vr\u1eafn = V l\u1ecfng - r\u1eafn - Vl\u1ecfng","B. Vr\u1eafn = V l\u1ecfng + r\u1eafn - Vl\u1ecfng","C. Vr\u1eafn = V l\u1ecfng - r\u1eafn + Vl\u1ecfng","D. Vr\u1eafn = V l\u1ecfng + r\u1eafn + Vl\u1ecfng"],"hint":"","explain":"<span class='basic_left'>C\u00f4ng th\u1ee9c t\u00ednh th\u1ec3 t\u00edch c\u1ee7a v\u1eadt r\u1eafn khi \u0111o b\u1eb1ng b\u00ecnh chia \u0111\u1ed9 l\u00e0 : Vr\u1eafn = V l\u1ecfng + r\u1eafn - Vl\u1ecfng.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":1}]}],"id_ques":2313},{"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":"Ng\u01b0\u1eddi ta d\u00f9ng 1 b\u00ecnh chia \u0111\u1ed9 ghi t\u1edbi 100 $c{{m}^{3}}$ \u0111ang ch\u1ee9a 20 $c{{m}^{3}}$ n\u01b0\u1edbc, \u0111\u1ec3 \u0111o th\u1ec3 t\u00edch c\u1ee7a 1 h\u00f2n \u0111\u00e1. Khi th\u1ea3 h\u00f2n \u0111\u00e1 v\u00e0o b\u00ecnh, m\u1ef1c n\u01b0\u1edbc trong b\u00ecnh d\u00e2ng l\u00ean t\u1edbi v\u1ea1ch 55 $c{{m}^{3}}$.Th\u1ec3 t\u00edch c\u1ee7a h\u00f2n \u0111\u00e1 l\u00e0:","select":["A. 86$c{{m}^{3}}$","B. 31$c{{m}^{3}}$","C. 35$c{{m}^{3}}$","D. 75$c{{m}^{3}}$"],"hint":"Th\u1ec3 t\u00edch h\u00f2n \u0111\u00e1 b\u1eb1ng th\u1ec3 t\u00edch ph\u1ea7n n\u01b0\u1edbc t\u0103ng l\u00ean","explain":"<span class='basic_left'> G\u1ecdi th\u1ec3 t\u00edch c\u1ee7a ban \u0111\u1ea7u trong b\u00ecnh l\u00e0 $V_1$<br\/> Th\u1ec3 t\u00edch trong b\u00ecnh sau khi th\u1ea3 h\u00f2n \u0111\u00e1 l\u00e0 $V_2$<br\/> Th\u1ec3 t\u00edch h\u00f2n \u0111\u00e1: $V={{V}_{2}}-{{V}_{1}}=55-20=35c{{m}^{3}}$ <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":2}]}],"id_ques":2314},{"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":"Khi \u0111o th\u1ec3 t\u00edch c\u1ee7a m\u1ed9t vi\u00ean s\u1ecfi b\u1eb1ng b\u00ecnh chia \u0111\u1ed9 c\u00f3 GH\u0110 100ml v\u00e0 chia t\u1edbi ml. K\u1ebft qu\u1ea3 n\u00e0o d\u01b0\u1edbi \u0111\u00e2y ghi \u0111\u00fang?","select":["A. 16,00ml","B. 16ml","C. 16,01ml","D. 16,10ml"],"hint":"","explain":"<span class='basic_left'>V\u00ec \u0110CNN l\u00e0 1ml n\u00ean k\u1ebft qu\u1ea3 \u0111\u00fang l\u00e0 16ml.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":2}]}],"id_ques":2315},{"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'>M\u1ed9t b\u00ecnh tr\u00e0n ch\u1ec9 c\u00f3 th\u1ec3 ch\u1ee9a \u0111\u01b0\u1ee3c nhi\u1ec1u nh\u1ea5t l\u00e0 100$c{{m}^{3}}$ n\u01b0\u1edbc, \u0111ang \u0111\u1ef1ng 60$c{{m}^{3}}$ n\u01b0\u1edbc. Th\u1ea3 m\u1ed9t v\u1eadt r\u1eafn kh\u00f4ng th\u1ea9m n\u01b0\u1edbc v\u00e0o b\u00ecnh th\u00ec th\u1ea5y th\u1ebf t\u00edch n\u01b0\u1edbc tr\u00e0n ra kh\u1ecfi b\u00ecnh l\u00e0 30$c{{m}^{3}}$. Th\u1ec3 t\u00edch c\u1ee7a v\u1eadt r\u1eafn l\u00e0:<\/span>","select":["A. 40$c{{m}^{3}}$","B. 90$c{{m}^{3}}$","C. 70$c{{m}^{3}}$","D. 30$c{{m}^{3}}$"],"hint":"","explain":"<span class='basic_left'>Khi th\u1ea3 v\u1eadt v\u00e0o, n\u01b0\u1edbc tr\u00e0n ra 30$c{{m}^{3}}$ v\u1eady t\u1ed5ng th\u1ec3 t\u00edch v\u1eadt v\u00e0 n\u01b0\u1edbc l\u00e0: Vv+n=100 + 30 = 130$c{{m}^{3}}$ <br\/>V\u1eady th\u1ec3 t\u00edch v\u1eadt r\u1eafn l\u00e0: Vv = Vv+n \u2013 Vn = 130 \u2013 60 = 70$c{{m}^{3}}$ <br\/><span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":2}]}],"id_ques":2316},{"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'>Khi th\u1ea3 m\u1ed9t qu\u1ea3 cam v\u00e0o m\u1ed9t b\u00ecnh tr\u00e0n ch\u1ee9a \u0111\u1ea7y n\u01b0\u1edbc th\u00ec n\u01b0\u1edbc tr\u00e0n v\u00e0o m\u1ed9t b\u00ecnh chia \u0111\u1ed9 c\u00f3 GH\u0110 300$c{{m}^{3}}$ v\u00e0 \u0110CNN 5$c{{m}^{3}}$. M\u1ef1c n\u01b0\u1edbc trong b\u00ecnh chia \u0111\u1ed9 l\u00ean t\u1edbi v\u1ea1ch s\u1ed1 215. Th\u1ec3 t\u00edch c\u1ee7a qu\u1ea3 cam b\u1eb1ng bao nhi\u00eau? <\/span>","select":["A. 215$c{{m}^{3}}$.","B. 85$c{{m}^{3}}$.","C. 300$c{{m}^{3}}$","D. C\u1ea3 ba ph\u01b0\u01a1ng \u00e1n tr\u00ean \u0111\u1ec1u sai."],"hint":"","explain":"<span class='basic_left'>Qu\u1ea3 cam th\u01b0\u1eddng n\u1ed5i m\u1ed9t ph\u1ea7n n\u00ean theo k\u1ebft qu\u1ea3 tr\u00ean n\u01b0\u1edbc tr\u00e0n ra 215 $c{{m}^{3}}$ kh\u00f4ng ph\u1ea3i l\u00e0 th\u1ec3 t\u00edch qu\u1ea3 cam.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 D.<\/span><\/span> ","column":2}]}],"id_ques":2317},{"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\u00ecnh chia \u0111\u1ed9 c\u00f3 dung t\u00edch 100$c{{m}^{3}}$ \u0111\u1ef1ng 95$c{{m}^{3}}$ n\u01b0\u1edbc. N\u1ebfu \u0111\u1ed5 m\u1ed9t l\u01b0\u1ee3ng c\u00e1t v\u00e0o b\u00ecnh th\u00ec n\u01b0\u1edbc tr\u00e0n ra 5$c{{m}^{3}}$. V\u1eady th\u1ec3 t\u00edch th\u1ef1c c\u1ee7a l\u01b0\u1ee3ng c\u00e1t \u0111\u1ed5 v\u00e0o b\u00ecnh l\u00e0 :","select":["A. 6$c{{m}^{3}}$","B. 5$c{{m}^{3}}$","C. 11$c{{m}^{3}}$","D. 10$c{{m}^{3}}$"],"hint":"","explain":"<span class='basic_left'>Th\u1ec3 t\u00edch n\u01b0\u1edbc tr\u00e0n ra ngo\u00e0i 5$c{{m}^{3}}$ n\u01b0\u1edbc.<br\/> Th\u1ec3 t\u00edch n\u01b0\u1edbc t\u0103ng th\u00eam trong b\u00ecnh l\u00e0 100-95=5$c{{m}^{3}}$.<br\/>V\u1eady th\u1ec3 t\u00edch c\u1ee7a c\u00e1t l\u00e0 5+5=10$c{{m}^{3}}$.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 D.<\/span><\/span> ","column":2}]}],"id_ques":2318},{"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 th\u1ec3 t\u00edch c\u1ee7a qu\u1ea3 b\u00f3ng nh\u1ef1a \u0111\u1eb7c b\u1ea1n Linh \u0111\u00e3 d\u00f9ng m\u1ed9t v\u1eadt n\u1eb7ng \u0111\u1ec3 k\u00e9o cho qu\u1ea3 b\u00f3ng ch\u00ecm trong m\u1ed9t b\u00ecnh tr\u00e0n. V\u1eadt n\u1eb7ng chi\u1ebfm th\u1ec3 t\u00edch 125 $c{{m}^{3}}$. Th\u1ec3 t\u00edch n\u01b0\u1edbc tr\u00e0n ra l\u00e0 650 $c{{m}^{3}}$. Th\u1ec3 t\u00edch qu\u1ea3 b\u00f3ng l\u00e0:","select":["A. 125$c{{m}^{3}}$","B. 650$c{{m}^{3}}$","C. 525$c{{m}^{3}}$","D. 725$c{{m}^{3}}$"],"hint":"","explain":"<span class='basic_left'>Th\u1ec3 t\u00edch qu\u1ea3 b\u00f3ng l\u00e0: $650-125=525c{{m}^{3}}$<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":2}]}],"id_ques":2319},{"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'> M\u1ed9t h\u1ed3 b\u01a1i c\u00f3 chi\u1ec1u r\u1ed9ng 5m, cao 1,5m, d\u00e0i 20m ch\u1ee9a 100 ${{m}^{3}}$ n\u01b0\u1edbc. Ng\u01b0\u1eddi ta th\u1ea3 v\u00e0o h\u1ed3 m\u1ed9t kh\u00fac g\u1ed7 h\u00ecnh ch\u1eefa nh\u1eadt. Bi\u1ebft r\u1eb1ng kh\u00fac g\u1ed7 ch\u1ec9 ch\u00ecm $\\dfrac{2}{3}$ d\u01b0\u1edbi n\u01b0\u1edbc. Th\u1ec3 t\u00edch c\u1ee7a kh\u00fac g\u1ed7 t\u1ed1i \u0111a \u0111\u1ec3 n\u01b0\u1edbc kh\u00f4ng tr\u00e0n ra ngo\u00e0i l\u00e0:<\/span>","select":["A. 15${{m}^{3}}$","B. 50${{m}^{3}}$","C. 25${{m}^{3}}$","D. 75${{m}^{3}}$"],"hint":"","explain":"<span class='basic_left'>Th\u1ec3 t\u00edch b\u1ec3:$5\\times 1,5\\times 20=150{{m}^{3}}$ <br\/>Th\u1ec3 t\u00edch ph\u1ea7n kh\u00f4ng ch\u1ee9a n\u01b0\u1edbc:$150-100=50{{m}^{3}}$ <br\/> Th\u1ec3 t\u00edch kh\u00fac g\u1ed7: $50\\times \\dfrac{3}{2}=75{{m}^{3}}$ <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 D.<\/span><\/span> ","column":2}]}],"id_ques":2320}],"lesson":{"save":0,"level":2}}