Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
a: \(\left(3965-2378\right)-\left(437-1378\right)-528\)
\(=3965-2378-437+1378-528\)
\(=\left(3965-437-528\right)-\left(2378-1378\right)\)
\(=3000-1000=2000\)
b: \(\left(-457\right)+\left(-123\right)+23+237\)
\(=\left(-457+237\right)+\left(-123+23\right)\)
\(=-220-100=-320\)
c: \(\left(-329\right)-\left(15-101\right)-\left(25-440\right)\)
\(=-329-15+101-25+440\)
\(=\left(440-15-25\right)+\left(-329+101\right)\)
\(=400-228=172\)
a) ( 1267-196 ) - ( 267 + 304 )
= ( 1267 - 267 ) - ( 196 + 304 )
= 1000 - 400
= 600
b ) ( 3965 - 2378 ) - ( 437-1378 ) - 528
=
a) 215+(-38)-(-58)+9-85
=215-38+58+9-85
=(215-38)+(58+9)-85
=177+67-85
=159
b)(1267-196)-(267-304)
=1071-(-37)
=1108
c)(3965-2378)-(437-1378)-528
=1578-(-941)-528
=2000.
Con d mk chiu.
a) 215 + (-38) - (-58) + 9-85
=215 - 38 + 58 + 9 - 85
=(215 - 38) + (58 + 9) - 85
=177 + 67 - 85
=159
b)(1267 - 196) - (267 - 304)
=1071 - (-37)
=1108
c)(3965 - 2378) - (437 - 1378) - 528
=1578 - (-941) - 528
=2000
a) \(215+\left(-38\right)-\left(-58\right)+9-85\)
=\(\left(215-85\right)+\left[\left(-38\right)-\left(-58\right)\right]+9\)
=\(130+20+9\)
=\(159\)
b)\(\left(1267-196\right)-\left(267-304\right)\)
=\(1071-\left(-37\right)\)
=\(1108\)
a) (871 - 28 ) + ( 229 - 72 )
= 871 - 28 + 229 - 72
= (871 + 229) - (28 + 72)
= 1100 + 100 = 1200
b) ( 689 - 31 ) - ( 269 - 111 )
= 689 - 31 - 269 + 111
= (689 + 111) - (31 + 269)
= 800 - 300= 500
c) 215 + ( - 38) - ( - 58) + 90 - 85
= 215 - 38 + 58 + 90 - 85
= (215 - 85) + (58 - 38) + 90
= 130 + 20 + 90 = 240
d) 31 - [ 26 - ( 209 + 35 ) ]
= 31 - 26 + 209 + 35
= (31 + 209) + (35 - 26)
= 240 + 9 = 249
e) ( 1267 - 196 ) - ( 267 + 304 )
= 1267 - 196 - 67 - 304
= (1267 - 67) - (196 + 304)
= 1200 - 500 = 700
f) ( 3965 - 2378 ) - ( 437 - 1378 ) - 528
= 3965 - 2378 - 437 + 1378 - 528
= 3965 - (2378 - 1378) - (437 + 528)
= 3965 - 1000 - 965 = 3000 - 1000 = 2000
Chúc em học tốt!!!
Câu 4:
a) \(\left(1267-86\right)-\left(267+14\right)\)
\(=1267-86-267-14\)
\(=900\)
b) \(\left(3900-278\right)-\left(80-178\right)-520\)
\(=3900-278-80+178-520\)
\(=3200\)
c) \(\left(2023-79+15\right)-\left(-79+15\right)\)
\(=2023-79+15+79-15\)
\(=2023\)
d) \(-329-\left(15-101\right)-\left(25-101\right)\)
\(=-329-15+101-25+101\)
\(=-167\)
Câu 5:
Trong 2 bạn, không có ai là người trả lời đúng vì \(100-\left(37-49+12\right)=100-37+49-12\)
\(#WendyDang\)
(3965-2378)-(437-1378)-528
=1587-(-941)-528
=1587+941-528
=2528-528
=2000
(1267 - 196) - (267 - 204)
= 1267 - 196 - 267 + 204
= (1267 - 267) + (204 - 196)
= 1000 + 8
= 1008
(3965 - 2378) - (437 - 1378) - 528
= 3965 - 2378 - 437 + 1378 - 528
= 3965 - (437 + 528) - (2378 - 1378)
= 3965 - 965 - 1000
= 3000 - 1000
= 2000
2002 - 79 + 15 - (-79) - 15
= 2002 - (79 - 79) + (15 - 15)
= 2002 - 0 + 0
= 2002
-329 - (15 - 101) - (25 - 440)
= - 329 - 15 + 101 - 25 + 440
= (440 + 101 - 329) - (15 + 25)
= (541 - 329) - 40
= 212 - 40
= 172