=>B=299 -219 -401+12
=>B=80-401+12
=>B=(80+12)-401
=>B=92-401
=>B=-309
B = 299 - 219 - 401 + 12
= 80 - 401 + 12
= -321 + 12
= -309
-(-299)+(-219)+(-401)+12
Tính :
A= [(- 8 ) + ( - 7 ) ] + ( -10) ;
B = - ( - 299 ) + ( - 219 ) + ( -401 ) + 12
C = 555 + ( - 100) + ( -80) + \(\left|-333\right|\)
D = \(\left|-347\right|\) + ( - 40 ) + 3150 + ( - 307)
E= 98 . 42 – {50 . [(18 – 23) : 2 + 32 ]}
F = - 80 - [ - 130 – ( 12 – 4 )2] + 20080
G = 1000 + ( - 670 ) + 297 + ( - 330 )
H = 1024 : 24 + 140 : ( 38 + 25) – 723 : 721
I = \(\left|-129\right|\)-119+\(\left|2-31\right|\)
K = 219 +573 + 381 – 173
L = 36 . 33 – 105 . 11 + 22 . 15
N = 160 – ( 2 3 .52 – 6 . 25 )
O = (44 . 52 . 60 ) : ( 11 . 13 .15 )
P = (217 +154) . ( 3 19 – 217 ) . ( 24 - 42)
Q = 100 + 98 + 96 + ….. + 4 +2 – 97 – 95 - …… - 3 – 1
Bài 1 Tính các tổng sau
a [(-8)+(-7)]+(-10)
b -555-(-333)-100-80
c -(-299)+(-219)-401+12
d 300-(-200)-(-120)+18
- (-229) + (-219) - 401 + 12
-(-229)+(-219)-401+12
Tính các tổng sau: – (-229) + (-219) – 401 + 12
-(-2290+(-219)-401+12
300-(-200)-(-120)+18
-(-229 ) + (-219 ) - 401 + 12
300 - (-200) - (-120) + 18
Tính tổng:
A, [(-8)+(-7)]+(-10)
B, -555-(-333)-100-80
C, -(-229)+(219)-401+12
D, 300-(-200)-(-120)+18
