a) -81 – 132 – 547 + 181 – 132 – 53
b) 50 – 2016 + 50 – 118 + 2016 – 18
c) 254 – 49 – 75 + 254 – 175 + 549
d) 173 – 536 + 173 – ( 29 – 29 + 526)
e) -(-171 + 171 + 223 ) – (172 – 105 + 172) + 223
a) -81 – 132 – 547 + 181 – 132 – 53
b) 50 – 2016 + 50 – 118 + 2016 – 18
c) 254 – 49 – 75 + 254 – 175 + 549
d) 173 – 536 + 173 – ( 29 – 29 + 526)
e) -(-171 + 171 + 223 ) – (172 – 105 + 172) + 223
a) `-81 – 132 – 547 + 181 – 132 – 53`
`=(181-81)-(132+132)-(547+53)`
`=100-264-600`
`=-764`
b) `50 – 2016 + 50 – 118 + 2016 – 18`
`=(50+50)-(2016-2016)-(118+18)`
`=100-136`
`=-36`
c) `254 – 49 – 75 + 254 – 175 + 549`
`=(254+254-(49-549)-(75+175)`
`=508-(-500)-250`
`=758`
d)`173 – 536 + 173 – ( 29 – 29 + 526)`
`=173-536+173-526`
`=-(173+173)-(536+526)`
`=-716`
e)`-(-171 + 171 + 223 ) – (172 – 105 + 172) + 223`
`=-223-239+223`
`=-(223-223)-239`
`=-239`
Đáp án:
Giải thích các bước giải:
a) -81 – 132 – 547 + 181 – 132 – 53
=-81+181-132.2-547-53
= 100-264-600
= -500-264
= -764
b) 50 – 2016 + 50 – 118 + 2016 – 18
= 50.2-2016+2016-118-18
= 100-136
= -36
c) 254 – 49 – 75 + 254 – 175 + 549
= 254.2-49+549-75-175
= 508+500-250
= 508+250
=758
d) 173 – 536 + 173 – ( 29 – 29 + 526)
= 173.2-536-526-29+29
= 346-1062
= -716
e) -(-171 + 171 + 223 ) – (172 – 105 + 172) + 223
= -223+223-172.2+105
= -344+105
= -239