a) -7105 -(155 – 7105)+ 355 b) (35- 815) – (795 – 65) c) 5 – 197 – 2015 – 2015 12/11/2021 Bởi Allison a) -7105 -(155 – 7105)+ 355 b) (35- 815) – (795 – 65) c) 5 – 197 – 2015 – 2015
Đáp án: a) `-7105 -(155 – 7105)+ 355 ` `= – 7105 – 155 + 7105 + 355 ` `= (- 7105 + 7105) + ( 355 – 155) ` `= 0 + 200` `= 200` b)` (35- 815) – (795 – 65) ` `= 35 – 815 – 795 + 65` `= (35 + 65) – ( – 815 – 795)` `= 100 + (-1610 )` `= 1510` c) `5 – 197 – 2015 – 2015` `= ( 5 – 197) – ( 2015 – 2015)` `= – 192 – 0 ` `= – 192 ` Bình luận
a) – 7105 – ( 155 – 7105 ) + 355 = – 7105 – 155 + 7105 + 355 = [ 7105 + ( – 7105 ) ] + 355 – 155 = 0 + 355 – 155 = 355 – 155 = 200 b) ( 35 – 815 ) – ( 795 – 65 ) = 35 – 815 – 795 – 65 = – 780 – ( – 795 – 65 ) = – 780 – 860 = – 1640 c) 5 – 197 – 2015 – 2015 = – 192 – (2015 – 2015 ) = – 192 – 0 = – 192 CHO MIK XIN CTLHN Ạ Bình luận
Đáp án:
a) `-7105 -(155 – 7105)+ 355 `
`= – 7105 – 155 + 7105 + 355 `
`= (- 7105 + 7105) + ( 355 – 155) `
`= 0 + 200`
`= 200`
b)` (35- 815) – (795 – 65) `
`= 35 – 815 – 795 + 65`
`= (35 + 65) – ( – 815 – 795)`
`= 100 + (-1610 )`
`= 1510`
c) `5 – 197 – 2015 – 2015`
`= ( 5 – 197) – ( 2015 – 2015)`
`= – 192 – 0 `
`= – 192 `
a) – 7105 – ( 155 – 7105 ) + 355
= – 7105 – 155 + 7105 + 355
= [ 7105 + ( – 7105 ) ] + 355 – 155
= 0 + 355 – 155
= 355 – 155
= 200
b) ( 35 – 815 ) – ( 795 – 65 )
= 35 – 815 – 795 – 65
= – 780 – ( – 795 – 65 )
= – 780 – 860
= – 1640
c) 5 – 197 – 2015 – 2015
= – 192 – (2015 – 2015 )
= – 192 – 0
= – 192
CHO MIK XIN CTLHN Ạ