250b :{5.[78-(1997-1969)]}
3.{150:[(3006-2854)-77
12:{390:[500-(125+35.7)]}
100-[(64-48).5+88]:28
27.75+25.27-150
12:{390:[500-(125+35.7]}
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) 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
Thực hiện phép tính :
a) 27.75+25.27-150
b) 12: { 390 : [500 - ( 125 + 35.7) ]}
a) 27.75+26.27-150=27(75+25)-150
= 2700-150
= 2550
b) = 12: {390:[500-370]
= 12:{390:130}
=12:3
=4
3 mủ 3.4-4 mủ 2 :8
136.87+64.87
48:{390:[500-(5 mủ 3 +35.7)]}
Thực hiện phép tính:
a) 27.75+25.27-150
b)12:{390:[500-(125+35.7]}
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
Thực hiện phép tính:
A) 27.75+ 25.27-150
B) 12:{390:[500-(125+35.7)]}
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, 27.75+ 25.27-150 b,
= 27.(75 +25) -150
=27.100-150
=2700-150
=2550
80- (130-(12-40)2)
27. 75+25.27-150
12:(390:(500 - (125+ 35.7)))
a)80-[130-(12-40)2] b)27.75+25.27-150 c)12:{390:[500-(125+35.7)]}
=80-[130-(-28)2] =27.(75+25)-150 =12:{390:[500-(125+245)]}
=80-[130-784] =27.100-150 =12:{390:[500-370]}
=80-(-654) =2700-150 =12:{390:130}
=80+654 =2550 =12:3
=734 =4
Nhớ **** thanks so much^__^
Giải gấp!!!
a)100:{2.[22-(35-8)]}
b)12:{390:[500-(125+35.7)]}
\(100:\left\{2\cdot\left[22-\left(35-8\right)\right]\right\}\\ =100:\left\{2\cdot\left[22-27\right]\right\}\\ =100:\left(-10\right)\\ =-10\)
\(12:\left\{390:\left[500-\left(125+35\cdot7\right)\right]\right\}\\ =12:\left\{390:\left[500-370\right]\right\}\\ =12:3\\ =4\)
a) 100:{ 2.[22-(35-8)]}
=100:{2.[22-27]}
=100:{2.(-5)}
=100: 10
=10
12:{390:[500-(125+35.7)]}
=12 : { 390 : [ 500 - ( 125 +245) ] }
= 12 : { 390 : [ 500- 370 ] }
= 12 : { 390 : 130 }
= 12 : 3
= 4
12:{390:[500-(125+35.7)]}
=12:{390:[500-(125+245)]}
=12:{390:[500-370]}
=12:{390:130}
=12:3
=4
tick cho mình nhé mình trước
a) 12 : { 390 : [ 500 - ( 125 + 35. 7 ) ] }
= 12 : { 390 : [ 500 - ( 125 + 245 ) ] }
= 12 : { 390 : [ 500 - 370 ] }
= 12 : { 390 : 130 }
= 12 : 3
= 4