6A_LUYỆN TẬP CHUNG TRANG 69(tiet1) by Thầy Khoa Phương https://padlet.com/khoavnkg/abxnrw04sur8ll87 Mời các em 6A tham gia cùng học en-us 2021-12-23 08:44:50 UTC 2023-06-23 12:47:47 UTC hello@padlet.com https://padlet.net/icons/png/1f5dd.png khoavnkg https://padlet.com/khoavnkg/abxnrw04sur8ll87/wish/1967814049 Bài 3.27 trang 69 Toán lớp 6

Tính giá trị của biểu thức:

a) (27 + 86) - (29 - 5 + 84); 

b) 39 - (298 - 89) + 299. 



]]> 2021-12-29 14:59:41 UTC https://padlet.com/khoavnkg/abxnrw04sur8ll87/wish/1967814049 Bài 3.29 trang 69 khoavnkg https://padlet.com/khoavnkg/abxnrw04sur8ll87/wish/1967814176 Bài 3.29 trang 69 Toán lớp 6

Tính một cách hợp lí:

a) 2 834 + 275 – 2 833 – 265;

b) (11 + 12 + 13) – (1 + 2 + 3).

]]> 2021-12-29 14:59:49 UTC https://padlet.com/khoavnkg/abxnrw04sur8ll87/wish/1967814176 Bảo Trân nguyenhoangbaotran0404 https://padlet.com/khoavnkg/abxnrw04sur8ll87/wish/1968225234 a)(27 + 86) - (29 - 5 + 84). 
= 27 + 86 - 29 + 5 - 84. 
= (27 – 29) + (86 – 84) + 5.
= (-2) + 2 + 5
= 0 + 5.
= 5
b) 39 -(298 - 89) + 299 
= 39 - 298 + 89 + 299.
= (39 + 89) + (299 – 298)
= 39 + 89 + 1
= 39 +(89 + 1)
= 39 + 90.
= 129.

]]> 2021-12-30 00:44:35 UTC https://padlet.com/khoavnkg/abxnrw04sur8ll87/wish/1968225234 Thúy an https://padlet.com/khoavnkg/abxnrw04sur8ll87/wish/1968226469 a) (27 + 86) - (29 - 5 + 84) 

= 27 + 86 - 29 + 5 - 84 

= (27 – 29) + (86 – 84) + 5

= (- 2) + 2 + 5

= 0 + 5

= 5

b) 39 - (298 - 89) + 299 

= 39 - 298 + 89 + 299

= (39 + 89) + (299 – 298)

= 39 + 89 + 1

= 39 + (89 + 1)

= 39 + 90

=129
]]> 2021-12-30 00:45:42 UTC https://padlet.com/khoavnkg/abxnrw04sur8ll87/wish/1968226469 Khả Hân vongockhahan102021 https://padlet.com/khoavnkg/abxnrw04sur8ll87/wish/1968226942 a) (27 + 86) - (29 - 5 + 84) 
= 27 + 86 - 29 + 5 - 84 
= (27 – 29) + (86 – 84) + 5
= (- 2) + 2 + 5
= 0 + 5
= 5
b) 39 - (298 - 89) + 299 
= 39 - 298 + 89 + 299
= (39 + 89) + (299 – 298)
= 39 + 89 + 1
= 39 + (89 + 1)
= 39 + 90
= 129
]]> 2021-12-30 00:46:09 UTC https://padlet.com/khoavnkg/abxnrw04sur8ll87/wish/1968226942 T.Vy https://padlet.com/khoavnkg/abxnrw04sur8ll87/wish/1968228473 a)(27 + 86) - (29 - 5 + 84). 
= 27 + 86 - 29 + 5 - 84. 
= (27 – 29) + (86 – 84) + 5.
= (-2) + 2 + 5
= 0 + 5.
= 5
b) 39 -(298 - 89) + 299 
= 39 - 298 + 89 + 299.
= (39 + 89) + (299 – 298)
= 39 + 89 + 1
= 39 +(89 + 1)
= 39 + 90.
= 129.]]> 2021-12-30 00:47:37 UTC https://padlet.com/khoavnkg/abxnrw04sur8ll87/wish/1968228473 khánh linh https://padlet.com/khoavnkg/abxnrw04sur8ll87/wish/1968229261 2021-12-30 00:48:15 UTC https://padlet.com/khoavnkg/abxnrw04sur8ll87/wish/1968229261 An Nhi annhi2010kgvn https://padlet.com/khoavnkg/abxnrw04sur8ll87/wish/1968229755 a) ( 27 + 86 ) - ( 29 - 5 + 84 )
   = 27 + 86   -   29 + 5 -  84
   = (27 – 29) + (86 – 84) + 5.
   = ( -2 ) + 2 + 5
   = 0 + 5
   = 5
b) 39 -( 298 - 89 ) + 299 
   = 39 - 298 + 89 + 299.
   = ( 39 + 89 ) + ( 299 – 298 )
   = 39 + 89 + 1
   = 39 +(89 + 1)
   = 39 + 90
   = 129

]]> 2021-12-30 00:48:44 UTC https://padlet.com/khoavnkg/abxnrw04sur8ll87/wish/1968229755 Bảo Trân nguyenhoangbaotran0404 https://padlet.com/khoavnkg/abxnrw04sur8ll87/wish/1968237938 a) 2834 + 275 - 2833 - 265. 
= (2834 - 2833) + (275 - 265) 
= 1 + 10. 
= 11.
b)(11 + 12 + 13) - (1 + 2 + 3). 
= 11 + 12 + 13 - 1 - 2 - 3 .
=(11 - 1) + (12 - 2) + (13 - 3). 
= 10 + 10 + 10 
= 20 + 10.
=  30










Bảo Trân]]> 2021-12-30 00:55:59 UTC https://padlet.com/khoavnkg/abxnrw04sur8ll87/wish/1968237938 An Nhi annhi2010kgvn https://padlet.com/khoavnkg/abxnrw04sur8ll87/wish/1968239010 a) 2 834 + 275 – 2 833 – 265
=( 2834 - 2833 ) + ( 275 - 265 )
=            1              +           10
=                           11
b) (11 + 12 + 13) – (1 + 2 + 3)
=    11 + 12 + 13 - 1 - 2 - 3 
=    (11 - 1) + (12 - 2) + (13 - 3) 
=          10   +     10     +    10
=                20             +    10
=                              30
]]> 2021-12-30 00:56:48 UTC https://padlet.com/khoavnkg/abxnrw04sur8ll87/wish/1968239010 Như Quỳnh nguyenthinhuquynh2514 https://padlet.com/khoavnkg/abxnrw04sur8ll87/wish/1968239113 a) 2834+275-2833-265.
=(2834-2883)+(275-265).
= 1+10
=11.
b) (11+12+13)-(1+2+3).
=11+12+13-1-2-3
=(11-1)+(12-2)+(13-3).
=10+10+10
=20+10
=30.]]> 2021-12-30 00:56:53 UTC https://padlet.com/khoavnkg/abxnrw04sur8ll87/wish/1968239113 khánh linh https://padlet.com/khoavnkg/abxnrw04sur8ll87/wish/1968239660 2021-12-30 00:57:18 UTC https://padlet.com/khoavnkg/abxnrw04sur8ll87/wish/1968239660 Khả Hân vongockhahan102021 https://padlet.com/khoavnkg/abxnrw04sur8ll87/wish/1968240724 a) 2 834 + 275 - 2 833 - 265 
= (2 834 - 2 833) + (275 - 265) 
= 1 + 10 
= 11
b) (11 + 12 + 13) - (1 + 2 + 3) 
= 11 + 12 + 13 - 1 - 2 - 3 
= (11 - 1) + (12 - 2) + (13 - 3) 
= 10 + 10 + 10 
= 20 + 10
= 30
]]> 2021-12-30 00:58:14 UTC https://padlet.com/khoavnkg/abxnrw04sur8ll87/wish/1968240724 T.Vy https://padlet.com/khoavnkg/abxnrw04sur8ll87/wish/1968241794 a) 2834 + 275 - 2833 - 265. 
= (2834 - 2833) + (275 - 265) 
= 1 + 10. 
= 11.
b)(11 + 12 + 13) - (1 + 2 + 3). 
= 11 + 12 + 13 - 1 - 2 - 3 .
=(11 - 1) + (12 - 2) + (13 - 3). 
= 10 + 10 + 10 
= 20 + 10.
=  30]]> 2021-12-30 00:59:15 UTC https://padlet.com/khoavnkg/abxnrw04sur8ll87/wish/1968241794 Trần Hữu Khang https://padlet.com/khoavnkg/abxnrw04sur8ll87/wish/1968241869 2021-12-30 00:59:18 UTC https://padlet.com/khoavnkg/abxnrw04sur8ll87/wish/1968241869 Thúy an https://padlet.com/khoavnkg/abxnrw04sur8ll87/wish/1968243289 B): (11+12+13)-(1+2+3)
     =11+12+12-1-2-3
     =(11-1)+(12-2+(13-3)
     =10+10+10
     =20+10
=30]]> 2021-12-30 01:00:35 UTC https://padlet.com/khoavnkg/abxnrw04sur8ll87/wish/1968243289 Trần Hữu Khang https://padlet.com/khoavnkg/abxnrw04sur8ll87/wish/1968243569 2021-12-30 01:00:51 UTC https://padlet.com/khoavnkg/abxnrw04sur8ll87/wish/1968243569 A.Thư https://padlet.com/khoavnkg/abxnrw04sur8ll87/wish/1968244338 2021-12-30 01:01:34 UTC https://padlet.com/khoavnkg/abxnrw04sur8ll87/wish/1968244338 T.Mai nguyenphamtrucmai2010 https://padlet.com/khoavnkg/abxnrw04sur8ll87/wish/1968245921 a) 2834+275-2833-265.
=(2834-2833)+(275-265)
=1+10
=11.
b)(11+12+13)-(1+2+3)
=(11-1)+(12-2)+(13-3)
=10+10+10
=20+10
=30.<3]]> 2021-12-30 01:02:59 UTC https://padlet.com/khoavnkg/abxnrw04sur8ll87/wish/1968245921