Bài 1 tính : 1) 13 + (-67) + 67 – ( – 53) 2) – 29 – ( -58 ) + 42 + ( – 51 ) 3) – 37 + 94 – ( – 206 ) – 163 4) 218 – ( 194 – 82 ) làm hộ mik nhé

0 bình luận về “Bài 1 tính : 1) 13 + (-67) + 67 – ( – 53) 2) – 29 – ( -58 ) + 42 + ( – 51 ) 3) – 37 + 94 – ( – 206 ) – 163 4) 218 – ( 194 – 82 ) làm hộ mik nhé”

1. `1, 13 + (-67) + 67 – ( – 53)`

   `= 13 – 67 + 67 + 53`

   `= ( 67 – 67 ) + ( 13 + 53 )`

   `= 66 + 0`

   `= 66`

   `2, – 29 – ( -58 ) + 42 + ( – 51 )`

   `= – 29 – 51 + 58 + 42` 

   `= -(29+51)+(58+42)`

   `= -80 + 100`

   `= 20`

   `3, – 37 + 94 – ( – 206 ) – 163`

   `= -37 + 94 + 206 – 163`

   `= (94+206)-(37+163)`

   `= 300-200`

   `= 100`

   `4, 218 – ( 194 – 82)`

   `= 218 – 194 + 82`

   `= (218 + 82) – 194`

   `= 300 – 194`

   `= 106`

   Bình luận

2. 1) 13 + (-67) + 67 – ( – 53)

   = 13 – 67 + 67 + 53

   = ( 13 + 53 ) + ( 67 – 67 )

   = 66 + 0 = 66

   2) – 29 – ( -58 ) + 42 + ( – 51 )

   = -29 + 58 + 42 – 51

   = 20

   3) – 37 + 94 – ( – 206 ) – 163

   = -37 + 94 + 206 – 163

   = 100

   4) 218 – ( 194 – 82 )

   = 218 – 194 + 82

   = 106

   $Cho mình hay nhất nhé$

   Bình luận