![](https://rs.olm.vn/images/avt/0.png?1311)
Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
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~
![](https://rs.olm.vn/images/avt/0.png?1311)
\(12:\left\{400:\left[500-\left(5^3+5^2\cdot7\right)\right]\right\}\)
\(=12:\left\{400:200\right\}\)
=12:2
=6
![](https://rs.olm.vn/images/avt/0.png?1311)
a) \(28.192+72.192+2022\)
\(=192.\left(28+72\right)+2022\)
\(=192.100+2022\)
\(=19200+2022\)
\(=21222\)
_________
d) \(6:\left\{400:\left[500-\left(125+25.7\right)\right]\right\}\)
\(=6:\left\{400:\left[500-300\right]\right\}\)
\(=6:\left\{400:200\right\}\)
\(=6:2\)
\(=3\)
\(#Wendy.Dang\)
\(c,28\cdot192+72\cdot192+2022\)
\(=192\cdot\left(28+72\right)+2022\)
\(=192\cdot100+2022\)
\(=19200+2022\)
\(=21222\)
\(d,6:\left\{400:\left[500-\left(125+25\cdot7\right)\right]\right\}\)
\(=6:\left\{400:\left[500-\left(125+175\right)\right]\right\}\)
\(=6:\left[400:\left(500-300\right)\right]\)
\(=6:\left(400:200\right)\)
\(=6:2\)
\(=3\)
#Toru
![](https://rs.olm.vn/images/avt/0.png?1311)
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
![](https://rs.olm.vn/images/avt/0.png?1311)
a, 61.49+27.49+12.49+100.51 = 49.(61+27+12)+100.51 = 49.100+51.100 = 100.(49+51) = 100.100 = 10000
b, 2 3 . 3 3 . 5 + 9 . 6 3 - 8 . 6 3 . 2018 0 (để kết quả dưới dạng lũy thừa)
= 6 3 . 5 + 6 3 . 9 - 8 . 6 3 . 1 = 6 3 . ( 5 + 9 - 8 ) = 6 4
c, 25.5.4.27.2 = (25.4).(5.2).27 = 100.10.27 = 27000
d, 12:{400:[500 – (125+25.7)]} = 12:{400:[500 – 300]} = 12:(400:200) = 12:2 = 6
e, 3 2 . 4 2 . 7 + 12 2 . 6 - 6 2 . 2 2 . 13 + 2020 0
= 12 2 . 7 + 12 2 . 6 - 12 2 . 3 + 1
= 12 2 . 7 + 6 - 13 + 1 = 1
![](https://rs.olm.vn/images/avt/0.png?1311)
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
\(12\div\left\{400\div\left[500-\left(125+25.7\right)\right]\right\}\)
\(=\)\(12\div\left\{400\div\left[500-\left(125+175\right)\right]\right\}\)
\(=\)\(12\div\left\{400\div\left[500-300\right]\right\}\)
\(=\)\(12\div\left\{400\div200\right\}\)
\(=\)\(12\div2\)
\(=\)\(6\)