Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
a) 27.25 + 25.27 - 150
= 27 ( 25+25 ) - 150
= 27.100 - 150
= 2700 - 150 = 2550
b) 12 : { 400 : [ 500 - ( 125 + 25.7) ] }
= 12: { 400 : ( 500 - 300 ) }
= 12 : ( 400 : 200 )
= 12 : 2
= 6
c) 13.17 - 256 : 16 + 14:7 - 1
= 221 - 16 + 2 - 1
= 206
Chúc bạn hok tốt~
12 : { 400 : [500 – (125 + 25 . 7)]}
12 : { 400 : [500 – (125 + 175]}
12 : { 400 : [500 – 300]}
12 : { 400 : 200}
12 : 2 = 6
\(12\div\left(400\left[500-\left(125+25.7\right)\right]\right)]\)
12 : ( 400 : [ 500 - ( 125 + 175 ]}
12 : ( 400 : [ 500 - 300 ]}
12 : ( 400 : 200 )
12 : 2 = 6
a 27 . 75 + 25 . 27 - 150
= 27 . ( 75 + 25 ) - 150
= 27 . 100 - 150
= 2700 - 150
2550
b ) 12 : { 390 : [ 500 - ( 125 + 35 . 7 ) ] }
= 12 : { 390 : [ 500 - ( 125 + 245 ) ] }
= 12 : { 390 : [ 500 - 370 ] }
= 12 : { 390 : 130 }
= 12 : 3
= 4
a)
4 . 25 – 12 . 25 + 170 : 10
= (4 . 25) – (12 . 25) + (170 : 10)
= 100 - 300 + 17
= -183
b)
(7 + 33 + 32) . 4 – 3
= (7 + 27 + 9) .4 – 3
= 43 . 4 – 3
= (43 . 4) – 3
= 45
c)
12 : {400 : [500 – (125 + 25 . 7)}
= 12 : {400 : [500 – (125 + 175)}
= 12 : (400: 200)
= 12 : 2
= 6
d)
168 + {[2.(24 + 32) - 2560] : 72}.
= 168 + [2 . (16 + 9) – 1] : 49
= 168 + 49: 49
= 168 + 1
= 167
a)
4 . 25 – 12 . 25 + 170 : 10
= (4 . 25) – (12 . 25) + (170 : 10)
= 100 - 300 + 17
= -183
b)
(7 + 33 + 32) . 4 – 3
= (7 + 27 + 9) .4 – 3
= 43 . 4 – 3
= (43 . 4) – 3
= 45
c)
12 : {400 : [500 – (125 + 25 . 7)}
= 12 : {400 : [500 – (125 + 175)}
= 12 : (400: 200)
= 12 : 2
= 6
d)
168 + {[2.(24 + 32) - 2560] : 72}.
= 168 + [2 . (16 + 9) – 1] : 49
= 168 + 49: 49
= 168 + 1
= 167
TL ;
12:{400:[500-(125+25.7)]}
= 12 : { 400 : [ 500 - ( 125 + 175 )]}
= 12 : { 400 : 200 }
= 12 : 2
= 6
\(12\div\left\{400\div\left[500-\left(125+25.7\right)\right]\right\}\)
\(=\)\(12\div\left\{400\div\left[500-\left(125+175\right)\right]\right\}\)
\(=\)\(12\div\left\{400\div\left[500-300\right]\right\}\)
\(=\)\(12\div\left\{400\div200\right\}\)
\(=\)\(12\div2\)
\(=\)\(6\)