Bài tập cơ bản bài Phép cộng và phép nhân

Home Lớp 6 Toán lớp 6 sách cũ Phép cộng và phép nhân Bài tập cơ bản

{"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":5,"ques":"Cho a = 9475; b = 5832; c = 525 <br\/> T\u00ednh a + b + c = ?","select":["A. 15832 ","B. 15932 ","C. 15831 ","D. 15931 "],"hint":"T\u00ednh 9475 + 5832 + 525 = ?","explain":"H\u01b0\u1edbng d\u1eabn: <br\/> <\/span>T\u00ednh 9475 + 5832 + 525 = ? <br\/><\/span>B\u00e0i gi\u1ea3i:<\/span> <br\/> <br\/>Ta c\u00f3: $$\\begin{align*}a + b + c &= 9475 + 5832 + 525 \\\\&= (9475 + 525) + 5832 \\\\& = 10 000 + 5832 \\\\& = 15832\\end{align*}$$V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: A<\/span>","column":2}]}],"id_ques":151},{"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":"Cho a = 3815; b = 8324; c = 5676 <br\/> T\u00ednh a + b + c = ?","select":["A. 19715 ","B. 17715 ","C. 17815 ","D. 18715 "],"hint":"T\u00ednh 3815 + 8324 + 5676 = ?","explain":"H\u01b0\u1edbng d\u1eabn: <br\/> <\/span> T\u00ednh 3815 + 8324 + 5676 = ? <br\/><\/span>B\u00e0i gi\u1ea3i:<\/span> <br\/> <br\/>Ta c\u00f3: $$\\begin{align*}a + b + c &= 3815 + 8324 + 5676 \\\\&= 3815 + (8324 + 5676) \\\\& = 3815 + 14000 \\\\& = 17815\\end{align*}$$ V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: C<\/span>","column":2}]}],"id_ques":152},{"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 38.(47 + 95)","select":["A. 5396 ","B. 5496 ","C. 5369 ","D. 5395 "],"hint":"","explain":"H\u01b0\u1edbng d\u1eabn: <\/span> <br\/> T\u00ednh trong ngo\u1eb7c tr\u01b0\u1edbc r\u1ed3i nh\u00e2n v\u1edbi s\u1ed1 ngo\u00e0i ngo\u1eb7c sau<br\/> <br\/><\/span>B\u00e0i gi\u1ea3i:<\/span> $$\\begin{align*}38. (47 + 95) &= 38 . 142 \\\\&= 5396\\end{align*}$$ V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: A<\/span>","column":2}]}],"id_ques":153},{"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 93. (18 + 57)","select":["A. 6976 ","B. 6975 ","C. 6957 ","D. 6875 "],"hint":"","explain":"H\u01b0\u1edbng d\u1eabn: <\/span> <br\/> T\u00ednh trong ngo\u1eb7c tr\u01b0\u1edbc r\u1ed3i nh\u00e2n v\u1edbi s\u1ed1 ngo\u00e0i ngo\u1eb7c sau<br\/> <br\/><\/span>B\u00e0i gi\u1ea3i:<\/span> $$\\begin{align*}93. (18 + 57) &= 93 . 75 \\\\&= 6975\\end{align*}$$ V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: B<\/span>","column":2}]}],"id_ques":154},{"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\u00ecm x bi\u1ebft: <br\/> (x - 34). 15 = 0","select":["A. x = 510 ","B. x = 34 ","C. x = 35 ","D. x = 150 "],"hint":"T\u00ecm x th\u1ecfa m\u00e3n x - 34 = 0","explain":"H\u01b0\u1edbng d\u1eabn: <\/span> <br\/> V\u00ec (x - 34). 15 = 0 <br\/> Suy ra x - 34 = 0 <br\/> Ta t\u00ecm x th\u1ecfa m\u00e3n x - 34 = 0<br\/> <br\/><\/span>B\u00e0i gi\u1ea3i:<\/span> <br\/> <br\/> $\\begin{align*}(x - 34). 15 &= 0 \\\\ x - 34 &= 0 \\\\ x &= 34\\end{align*}$ <br\/> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: B <\/span>","column":2}]}],"id_ques":155},{"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\u00ecm x bi\u1ebft: <br\/> (x - 35). 42 - 84 = 0","select":["A. x = 37 ","B. x = 35 ","C. x = 36 ","D. x = 34 "],"hint":"\u00c1p d\u1ee5ng t\u00ednh ch\u1ea5t a.(b + c) = a.b + a.c","explain":"H\u01b0\u1edbng d\u1eabn: <\/span> <br\/> \u00c1p \u0111\u1ee5ng t\u00ednh ch\u1ea5t a.(b + c) = a.b + a.c \u0111\u1ec3 ph\u00e1 ngo\u1eb7c r\u1ed3i t\u00ecm x<br\/> <br\/><\/span>B\u00e0i gi\u1ea3i:<\/span> <br\/> <br\/> $\\begin{align*}(x - 35). 42 - 84 &= 0 \\\\ x.42 - 35.42 - 84 &= 0 \\\\ x.42 - 35.42 &= 84 \\\\ x.42 &= 84 + 1470 \\\\ x.42 &= 1554 \\\\ x &= 37\\end{align*}$ <br\/> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: A <\/span>","column":2}]}],"id_ques":156},{"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":[[["255"],["8066"]]],"list":[{"point":5,"width":50,"type_input":"","ques":"H\u00e3y \u0111i\u1ec1n s\u1ed1 th\u00edch h\u1ee3p v\u00e0o \u00f4 tr\u1ed1ng: <br\/> <table><tr><th>a <\/th><th>218<\/th><\/tr><tr><td>b<\/td><td>37<\/td><\/tr><tr><td>a +b <\/td><td>_input_<\/td><\/tr><tr><td>a.b <\/td><td>_input_<\/td><\/tr><\/table>","hint":"T\u00ednh 218 + 37 = ? v\u00e0 218.37 = ?","explain":"H\u01b0\u1edbng d\u1eabn:<\/span><br\/>B\u01b0\u1edbc 1: <\/b>T\u00ednh 218 + 37 = ? <br\/> B\u01b0\u1edbc 2: <\/b> T\u00ednh 218.37 = ?<\/span> <br\/><br\/> B\u00e0i gi\u1ea3i:<\/span><br\/> Ta c\u00f3: 218+37 = 255 <br\/> 218.37 = 8066 <br\/> V\u1eady c\u00e1c s\u1ed1 c\u1ea7n \u0111i\u1ec1n l\u00e0: <br\/> <table><tr><th>a <\/th><th>218<\/th><\/tr><tr><td>b<\/td><td>37<\/td><\/tr><tr><td>a +b <\/td><td>255<\/td><\/tr><tr><td>a.b <\/td><td>8066<\/td><\/tr><\/table>"}]}],"id_ques":157},{"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":[[["553"],["57270"]]],"list":[{"point":5,"width":50,"type_input":"","ques":"H\u00e3y \u0111i\u1ec1n s\u1ed1 th\u00edch h\u1ee3p v\u00e0o \u00f4 tr\u1ed1ng: <br\/> <table><tr><th>a <\/th><th>415<\/th><\/tr><tr><td>b<\/td><td>138<\/td><\/tr><tr><td>a +b <\/td><td>_input_<\/td><\/tr><tr><td>a.b <\/td><td>_input_<\/td><\/tr><\/table>","hint":"T\u00ednh 415 + 138 = ? v\u00e0 415.138= ?","explain":"H\u01b0\u1edbng d\u1eabn:<\/span><br\/>B\u01b0\u1edbc 1: <\/b>T\u00ednh 415+138 = ? <br\/> B\u01b0\u1edbc 2: <\/b> T\u00ednh 415.138 = ?<\/span> <br\/><br\/> B\u00e0i gi\u1ea3i:<\/span><br\/> Ta c\u00f3: 415+138 = 553 <br\/> 415.138 = 57270 <br\/> V\u1eady c\u00e1c s\u1ed1 c\u1ea7n \u0111i\u1ec1n l\u00e0: <br\/> <table><tr><th>a <\/th><th>415<\/th><\/tr><tr><td>b<\/td><td>138<\/td><\/tr><tr><td>a +b <\/td><td>553<\/td><\/tr><tr><td>a.b <\/td><td>57270<\/td><\/tr><\/table>"}]}],"id_ques":158},{"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":"Khi \u0111\u1ed5i ch\u1ed7 c\u00e1c s\u1ed1 h\u1ea1ng trong 1 t\u1ed5ng th\u00ec t\u1ed5ng kh\u00f4ng thay \u0111\u1ed5i. \u0110\u00f3 l\u00e0 t\u00ednh ch\u1ea5t n\u00e0o c\u1ee7a ph\u00e9p c\u1ed9ng c\u00e1c s\u1ed1 t\u1ef1 nhi\u00ean?","select":["A. T\u00ednh ch\u1ea5t giao ho\u00e1n ","B. T\u00ednh ch\u1ea5t k\u1ebft h\u1ee3p ","C. T\u00ednh ch\u1ea5t ph\u00e2n ph\u1ed1i c\u1ee7a ph\u00e9p nh\u00e2n \u0111\u1ed1i v\u1edbi ph\u00e9p c\u1ed9ng "],"hint":"","explain":"B\u00e0i gi\u1ea3i:<\/span> <br\/> <br\/> Khi \u0111\u1ed5i ch\u1ed7 c\u00e1c s\u1ed1 h\u1ea1ng trong 1 t\u1ed5ng th\u00ec t\u1ed5ng kh\u00f4ng thay \u0111\u1ed5i <br\/> Hay ch\u00ednh l\u00e0: a + b = b + a <br\/> \u0110\u00e2y l\u00e0 t\u00ednh ch\u1ea5t giao ho\u00e1n <\/b> c\u1ee7a ph\u00e9p c\u1ed9ng c\u00e1c s\u1ed1 t\u1ef1 nhi\u00ean <br\/> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: A <\/span>","column":1}]}],"id_ques":159},{"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":"Mu\u1ed1n c\u1ed9ng m\u1ed9t t\u1ed5ng hai s\u1ed1 v\u1edbi m\u1ed9t s\u1ed1 th\u1ee9 3 ta c\u00f3 th\u1ec3 c\u1ed9ng s\u1ed1 th\u1ee9 nh\u1ea5t v\u1edbi t\u1ed5ng c\u1ee7a s\u1ed1 th\u1ee9 hai v\u00e0 s\u1ed1 th\u1ee9 ba. \u0110\u00f3 l\u00e0 t\u00ednh ch\u1ea5t n\u00e0o c\u1ee7a ph\u00e9p c\u1ed9ng c\u00e1c s\u1ed1 t\u1ef1 nhi\u00ean","select":["A. T\u00ednh ch\u1ea5t giao ho\u00e1n ","B. T\u00ednh ch\u1ea5t k\u1ebft h\u1ee3p ","C. T\u00ednh ch\u1ea5t ph\u00e2n ph\u1ed1i c\u1ee7a ph\u00e9p nh\u00e2n \u0111\u1ed1i v\u1edbi ph\u00e9p c\u1ed9ng "],"hint":"","explain":"B\u00e0i gi\u1ea3i:<\/span> <br\/> <br\/> Mu\u1ed1n c\u1ed9ng m\u1ed9t t\u1ed5ng hai s\u1ed1 v\u1edbi m\u1ed9t s\u1ed1 th\u1ee9 3 ta c\u00f3 th\u1ec3 c\u1ed9ng s\u1ed1 th\u1ee9 nh\u1ea5t v\u1edbi t\u1ed5ng c\u1ee7a s\u1ed1 th\u1ee9 hai v\u00e0 s\u1ed1 th\u1ee9 ba <br\/>Hay ch\u00ednh l\u00e0: (a + b) + c = a + (b + c) <br\/> \u0110\u00e2y l\u00e0 t\u00ednh ch\u1ea5t k\u1ebft h\u1ee3p <\/b>c\u1ee7a ph\u00e9p c\u1ed9ng c\u00e1c s\u1ed1 t\u1ef1 nhi\u00ean <br\/> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: B <\/span>","column":1}]}],"id_ques":160},{"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":[[["118"]]],"list":[{"point":5,"width":50,"type_input":"","ques":"T\u00ednh nhanh: <br\/> 35 + 18 + 65 = _input_","hint":"\u00c1p d\u1ee5ng t\u00ednh ch\u1ea5t giao ho\u00e1n v\u00e0 t\u00ednh ch\u1ea5t k\u1ebft h\u1ee3p c\u1ee7a ph\u00e9p c\u1ed9ng","explain":"H\u01b0\u1edbng d\u1eabn:<\/span><br\/>\u00c1p d\u1ee5ng t\u00ednh ch\u1ea5t giao ho\u00e1n c\u1ee7a ph\u00e9p c\u1ed9ng \u0111\u1ec3 \u0111\u1ed5i ch\u1ed7 c\u00e1c s\u1ed1 h\u1ea1ng <br\/> \u00c1p d\u1ee5ng t\u00ednh ch\u1ea5t k\u1ebft h\u1ee3p \u0111\u1ec3 nh\u00f3m c\u00e1c s\u1ed1 h\u1ea1ng c\u00f3 t\u1ed5ng tr\u00f2n ch\u1ee5c ho\u1eb7c tr\u00f2n tr\u0103m<\/span> <br\/><br\/> B\u00e0i gi\u1ea3i:<\/span><br\/> Ta c\u00f3: $$\\begin{align*}& 35 + 18 + 65 \\\\ =& 35 + 65 + 18 \\\\ =& (35 + 65) + 18 \\\\ =& 100 + 18 \\\\ =& 118 \\end{align*}$$ V\u1eady s\u1ed1 c\u1ea7n \u0111i\u1ec1n l\u00e0: 118"}]}],"id_ques":161},{"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":[[["137"]]],"list":[{"point":5,"width":50,"type_input":"","ques":"T\u00ednh nhanh: <br\/> 49 + 37 + 51 = _input_","hint":"\u00c1p d\u1ee5ng t\u00ednh ch\u1ea5t giao ho\u00e1n v\u00e0 t\u00ednh ch\u1ea5t k\u1ebft h\u1ee3p c\u1ee7a ph\u00e9p c\u1ed9ng","explain":"H\u01b0\u1edbng d\u1eabn:<\/span><br\/>\u00c1p d\u1ee5ng t\u00ednh ch\u1ea5t giao ho\u00e1n c\u1ee7a ph\u00e9p c\u1ed9ng \u0111\u1ec3 \u0111\u1ed5i ch\u1ed7 c\u00e1c s\u1ed1 h\u1ea1ng <br\/> \u00c1p d\u1ee5ng t\u00ednh ch\u1ea5t k\u1ebft h\u1ee3p ta nh\u00f3m c\u00e1c s\u1ed1 h\u1ea1ng c\u00f3 t\u1ed5ng tr\u00f2n ch\u1ee5c ho\u1eb7c tr\u00f2n tr\u0103m<\/span> <br\/><br\/> B\u00e0i gi\u1ea3i:<\/span><br\/> Ta c\u00f3: $$\\begin{align*}& 49 + 37 + 51 \\\\ =& 49 + 51 + 37 \\\\ =& (49 + 51) + 37 \\\\ =& 100 + 37 \\\\ =& 137 \\end{align*}$$ V\u1eady s\u1ed1 c\u1ea7n \u0111i\u1ec1n l\u00e0: 137<\/span>"}]}],"id_ques":162},{"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 \u0111\u00e1p \u00e1n n\u00e0o \u0111\u01b0\u1ee3c t\u00ednh b\u1eb1ng c\u00e1ch h\u1ee3p l\u00fd?","select":["A. 72 + 69 + 128 = (72 + 128) + 69","B. 72 + 69 + 128 = (72 + 69) + 128 ","C. 72 + 69 + 128 = 72 + (69 + 128)"],"hint":"\u00c1p d\u1ee5ng t\u00ednh ch\u1ea5t giao ho\u00e1n v\u00e0 k\u1ebft h\u1ee3p c\u1ee7a ph\u00e9p c\u1ed9ng","explain":"H\u01b0\u1edbng d\u1eabn: <\/span> <br\/> \u00c1p d\u1ee5ng t\u00ednh ch\u1ea5t giao ho\u00e1n \u0111\u1ec3 \u0111\u1ed5i ch\u1ed7 c\u00e1c s\u1ed1 h\u1ea1ng <br\/> \u00c1p d\u1ee5ng t\u00ednh ch\u1ea5t k\u1ebft h\u1ee3p \u0111\u1ec3 nh\u00f3m c\u00e1c s\u1ed1 h\u1ea1ng m\u00e0 khi c\u1ed9ng l\u1ea1i \u0111\u01b0\u1ee3c k\u1ebft qu\u1ea3 tr\u00f2n ch\u1ee5c hay tr\u00f2n tr\u0103m<br\/> <br\/><\/span>B\u00e0i gi\u1ea3i:<\/span> <br\/> <br\/> 72 + 69 + 128 ta th\u1ea5y 72 + 128 = 200 n\u00ean ta nh\u00f3m 72 v\u00e0 128 l\u1ea1i <br\/> $\\begin{align*}& 72 + 69 + 128 \\\\ =& 72 + 128 + 69 \\\\ =& (72 + 128) + 69 \\\\ =& 200 + 69 \\\\ =& 269 \\end{align*}$ <br\/> V\u1eady c\u00e1ch t\u00ednh h\u1ee3p l\u00fd l\u00e0 ta t\u00ednh t\u1ed5ng c\u1ee7a 72 v\u00e0 128 r\u1ed3i c\u1ed9ng ti\u1ebfp v\u1edbi 69 <br\/>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: A <\/span>","column":1}]}],"id_ques":163},{"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":"H\u00e3y ch\u1ecdn \u0111\u00e1p \u00e1n n\u00e0o \u0111\u01b0\u1ee3c t\u00ednh b\u1eb1ng c\u00e1ch h\u1ee3p l\u00fd?","select":["A. 32.47 + 32.5 = 1504 + 1696 ","B. 32.47 + 32.53 = 32.(47 + 53) ","C. 32.47 + 32.53 = 32.47.53 "],"hint":"\u00c1p d\u1ee5ng t\u00ednh ch\u1ea5t ph\u00e2n ph\u1ed1i c\u1ee7a ph\u00e9p nh\u00e2n \u0111\u1ed1i v\u1edbi ph\u00e9p c\u1ed9ng","explain":"H\u01b0\u1edbng d\u1eabn: <\/span> <br\/> \u00c1p d\u1ee5ng t\u00ednh ch\u1ea5t ph\u00e2n ph\u1ed1i c\u1ee7a ph\u00e9p nh\u00e2n \u0111\u1ed1i v\u1edbi ph\u00e9p c\u1ed9ng <br\/> C\u00e1ch t\u00ednh h\u1ee3p l\u00fd l\u00e0 nh\u00f3m th\u1eeba s\u1ed1 gi\u1ed1ng nhau \u1edf hai t\u00edch<br\/> <br\/><\/span>B\u00e0i gi\u1ea3i:<\/span> <br\/> <br\/> 32.47 + 32.53 ta th\u1ea5y \u1edf c\u1ea3 hai t\u00edch trong t\u1ed5ng \u0111\u1ec1u c\u00f3 th\u1eeba s\u1ed1 32 n\u00ean c\u00e1ch t\u00ednh h\u1ee3p l\u00fd l\u00e0 ta nh\u00f3m 32 ra ngo\u00e0i <br\/> $\\begin{align*}& 32.47 + 32.53 \\\\ =& 32.(47 + 53) \\\\ =& 32.100 \\\\ =& 3200 \\end{align*}$ <br\/> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: B <\/span>","column":1}]}],"id_ques":164},{"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":[[["586412"]]],"list":[{"point":5,"width":80,"type_input":"","ques":"H\u00e3y \u0111i\u1ec1n s\u1ed1 th\u00edch h\u1ee3p v\u00e0o \u00f4 tr\u1ed1ng: <br\/> 94135 + 586412 = _input_ + 94135","hint":"\u00c1p d\u1ee5ng t\u00ednh ch\u1ea5t giao ho\u00e1n c\u1ee7a ph\u00e9p c\u1ed9ng","explain":"H\u01b0\u1edbng d\u1eabn:<\/span><br\/>\u00c1p d\u1ee5ng t\u00ednh ch\u1ea5t giao ho\u00e1n c\u1ee7a ph\u00e9p c\u1ed9ng<\/span> <br\/><br\/> B\u00e0i gi\u1ea3i:<\/span><br\/> Ta c\u00f3: <br\/> VT: 94135 + 586412 <br\/> VP: ? + 94135 <br\/> Ta th\u1ea5y c\u1ea3 hai v\u1ebf \u0111\u1ec1u c\u00f3 s\u1ed1 h\u1ea1ng 94135 <br\/> Theo t\u00ednh ch\u1ea5t giao ho\u00e1n c\u1ee7a ph\u00e9p c\u1ed9ng: a + b = b + a <br\/> N\u00ean 94135 + 586412 = 586412<\/b> + 94135 <br\/> V\u1eady s\u1ed1 c\u1ea7n \u0111i\u1ec1n l\u00e0: 586412<\/span>"}]}],"id_ques":165},{"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":[[["850916"]]],"list":[{"point":5,"width":80,"type_input":"","ques":"H\u00e3y \u0111i\u1ec1n s\u1ed1 th\u00edch h\u1ee3p v\u00e0o \u00f4 tr\u1ed1ng: <br\/> 850916 + 571392 = 571392 + _input_ ","hint":"\u00c1p d\u1ee5ng t\u00ednh ch\u1ea5t giao ho\u00e1n c\u1ee7a ph\u00e9p c\u1ed9ng","explain":"H\u01b0\u1edbng d\u1eabn:<\/span><br\/>\u00c1p d\u1ee5ng t\u00ednh ch\u1ea5t giao ho\u00e1n c\u1ee7a ph\u00e9p c\u1ed9ng<\/span> <br\/><br\/> B\u00e0i gi\u1ea3i:<\/span><br\/> Ta c\u00f3: <br\/> VT: 850916 + 571392 <br\/> VP: 571392 + ? <br\/> Ta th\u1ea5y c\u1ea3 hai v\u1ebf \u0111\u1ec1u c\u00f3 s\u1ed1 h\u1ea1ng 571392 <br\/> Theo t\u00ednh ch\u1ea5t giao ho\u00e1n c\u1ee7a ph\u00e9p c\u1ed9ng: a + b = b + a <br\/> N\u00ean 850916 + 571392 = 571392 + 850916 <\/b> <br\/> V\u1eady s\u1ed1 c\u1ea7n \u0111i\u1ec1n l\u00e0: 850916<\/span>"}]}],"id_ques":166},{"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":[[["58047"]]],"list":[{"point":5,"width":80,"type_input":"","ques":"H\u00e3y \u0111i\u1ec1n s\u1ed1 th\u00edch h\u1ee3p v\u00e0o \u00f4 tr\u1ed1ng: <br\/> (8159 + 91453) + 58047 = 8159 + (91453 + _input_) ","hint":"\u00c1p d\u1ee5ng t\u00ednh ch\u1ea5t k\u1ebft h\u1ee3p c\u1ee7a ph\u00e9p c\u1ed9ng","explain":"H\u01b0\u1edbng d\u1eabn:<\/span><br\/>\u00c1p d\u1ee5ng t\u00ednh ch\u1ea5t k\u1ebft h\u1ee3p c\u1ee7a ph\u00e9p c\u1ed9ng<\/span> <br\/><br\/> B\u00e0i gi\u1ea3i:<\/span><br\/> Ta c\u00f3: <br\/> VT: (8159 + 91453) + 58047 <br\/> VP: 8159 + (91453 + ?) <br\/> Ta th\u1ea5y c\u1ea3 hai v\u1ebf \u0111\u1ec1u c\u00f3 s\u1ed1 h\u1ea1ng 8159 v\u00e0 94153 <br\/> Theo t\u00ednh ch\u1ea5t k\u1ebft h\u1ee3p c\u1ee7a ph\u00e9p c\u1ed9ng: (a + b) + c = a + (b + c) <br\/> N\u00ean (8159 + 91453) + 58047 = 8159 + (91453 + 58047<\/b>) <br\/> V\u1eady s\u1ed1 c\u1ea7n \u0111i\u1ec1n l\u00e0: 58047<\/span>"}]}],"id_ques":167},{"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":[[["8764"]]],"list":[{"point":5,"width":80,"type_input":"","ques":"H\u00e3y \u0111i\u1ec1n s\u1ed1 th\u00edch h\u1ee3p v\u00e0o \u00f4 tr\u1ed1ng: <br\/> 9036 + (8764 + 5934) =(9036 + _input_) + 5934 ","hint":"\u00c1p d\u1ee5ng t\u00ednh ch\u1ea5t k\u1ebft h\u1ee3p c\u1ee7a ph\u00e9p c\u1ed9ng","explain":"H\u01b0\u1edbng d\u1eabn:<\/span><br\/>\u00c1p d\u1ee5ng t\u00ednh ch\u1ea5t k\u1ebft h\u1ee3p c\u1ee7a ph\u00e9p c\u1ed9ng<\/span> <br\/><br\/> B\u00e0i gi\u1ea3i:<\/span><br\/> Ta c\u00f3: <br\/> VT: 9036 + (8764 + 5934) <br\/> VP: (9036 + ?) + 5934 <br\/> Ta th\u1ea5y c\u1ea3 hai v\u1ebf \u0111\u1ec1u c\u00f3 s\u1ed1 h\u1ea1ng 9036 v\u00e0 5934 <br\/> Theo t\u00ednh ch\u1ea5t k\u1ebft h\u1ee3p c\u1ee7a ph\u00e9p c\u1ed9ng: (a + b) + c = a + (b + c) <br\/> N\u00ean 9036 + (8764 + 5934) =(9036 + 8764<\/b>) + 5934 <br\/> V\u1eady s\u1ed1 c\u1ea7n \u0111i\u1ec1n l\u00e0: 8764<\/span>"}]}],"id_ques":168},{"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":"Cho bi\u1ec3u th\u1ee9c: 953871 + 913802 <br\/> Bi\u1ec3u th\u1ee9c n\u00e0o sau \u0111\u00e2y c\u00f3 gi\u00e1 tr\u1ecb b\u1eb1ng bi\u1ec3u th\u1ee9c \u0111\u00e3 cho?","select":["A. 913802 + 953875 ","B. 913802 + 953871 ","C. 953871 + 598371 "],"hint":"\u00c1p d\u1ee5ng t\u00ednh ch\u1ea5t giao ho\u00e1n c\u1ee7a ph\u00e9p c\u1ed9ng","explain":"H\u01b0\u1edbng d\u1eabn: <\/span> <br\/> \u00c1p d\u1ee5ng t\u00ednh ch\u1ea5t giao ho\u00e1n c\u1ee7a ph\u00e9p c\u1ed9ng <br\/> X\u00e9t t\u1eebng t\u1ed5ng xem t\u1ed5ng n\u00e0o c\u00f3 gi\u00e1 tr\u1ecb b\u1eb1ng t\u1ed5ng \u0111\u00e3 cho<br\/> <br\/><\/span>B\u00e0i gi\u1ea3i:<\/span> <br\/> <br\/> A - Ta c\u00f3 v\u00ec 953875 > 953871 v\u00e0 913802 = 913802 <br\/>N\u00ean 953871 + 913802 < 913802 + 953875 <\/b> <br\/> B - V\u00ec 913802 = 913802; 953871 = 953871 <br\/> N\u00ean 953871 + 913802 = 913802 + 953871 <\/b> <br\/> C - V\u00ec 953871 = 953871; 913802 > 598371 <br\/> N\u00ean 953871 + 913802 > 953871 + 598371 <\/b> <br\/> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: B <\/span>","column":3}]}],"id_ques":169},{"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":"Cho bi\u1ec3u th\u1ee9c: 475.387 <br\/> Bi\u1ec3u th\u1ee9c n\u00e0o sau \u0111\u00e2y c\u00f3 gi\u00e1 tr\u1ecb b\u1eb1ng bi\u1ec3u th\u1ee9c \u0111\u00e3 cho?","select":["A. 583.225 ","B. 378.475 ","C. 387.475 "],"hint":"\u00c1p d\u1ee5ng t\u00ednh ch\u1ea5t giao ho\u00e1n c\u1ee7a ph\u00e9p nh\u00e2n","explain":"H\u01b0\u1edbng d\u1eabn: <\/span> <br\/> \u00c1p d\u1ee5ng t\u00ednh ch\u1ea5t giao ho\u00e1n c\u1ee7a ph\u00e9p nh\u00e2n <br\/> X\u00e9t t\u1eebng t\u00edch xem t\u00edch n\u00e0o c\u00f3 gi\u00e1 tr\u1ecb b\u1eb1ng t\u00edch \u0111\u00e3 cho<br\/> <br\/><\/span>B\u00e0i gi\u1ea3i:<\/span> <br\/> <br\/> A - Ta c\u00f3 v\u00ec 583.225 = 131175; 475.387 = 183825 m\u00e0 183825 > 131175 <br\/>N\u00ean 475.387 > 583. 225 <\/b> <br\/> B - V\u00ec 475 = 475; 378 < 387 <br\/> N\u00ean 475.387 > 378.475<\/b> <br\/> C - V\u00ec 387 = 387; 475 = 475 <br\/> N\u00ean 475.387 = 387.475 <\/b> <br\/> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: C <\/span>","column":3}]}],"id_ques":170}],"lesson":{"save":0,"level":1}}

Điểm của bạn.

Câu hỏi này theo dạng chọn đáp án đúng, sau khi đọc xong câu hỏi, bạn bấm vào một trong số các đáp án mà chương trình đưa ra bên dưới, sau đó bấm vào nút gửi để kiểm tra đáp án và sẵn sàng chuyển sang câu hỏi kế tiếp

Trả lời đúng trong khoảng thời gian quy định bạn sẽ được + số điểm như sau:
Trong khoảng 1 phút đầu tiên	+ 5 điểm
Trong khoảng 1 phút -> 2 phút	+ 4 điểm
Trong khoảng 2 phút -> 3 phút	+ 3 điểm
Trong khoảng 3 phút -> 4 phút	+ 2 điểm
Trong khoảng 4 phút -> 5 phút	+ 1 điểm

Quá 5 phút: không được cộng điểm

Tổng thời gian làm mỗi câu (không giới hạn)

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Bấm vào đây nếu phát hiện có lỗi hoặc muốn gửi góp ý

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