a) 12 : { 400 : [ 500 - ( 125 + 25 . 7 )]}

= 12 : { 400 : [ 500 - ( 125 + 175 )]}

= 12 : { 400 : [ 500 - 300 ]}

= 12 : { 400 : 200 }

= 12 : 2 

= 6

b) 5 . 22 - 18 : 3

= 110 - 6

= 104

c) 18 : 3 + 182 + 3 . ( 51 : 17 )

= 6 + 182 + 3.3

= 6 + 182 + 9

= 197

d) 25.8 - 12.5 + 170 : 17 - 8

= 1000 - 60 + 10 - 8

= 940 + 10 - 8

= 940 + 2

= 942

\(a\)\(=6+182+3.3\)

\(=188+9=197\)

\(b;15-200:50\)

\(=15-4=11\)

\(c;200-60+\frac{170}{7}-8\)

\(=140+\frac{114}{7}\)

\(=\frac{1094}{7}\)

a)18 : 3 + 182 + 3.(51:17)

= 6 + 182 + 3.3

= 188 + 9

= 197

b) 15 - 25.8:(100:2)

= 15 - 200 : 50

= 15 - 4 

= 11

c) 25.8 - 12.5 + 170:17 - 8

= 200 - 60 + 10 - 8

= 142

ban nao biet

a,27.75+25.27-150

=27.(75+25)-150

=27.100-150

=2700-150

=2550

c,13.17-256:16+14:7-1

=221-16+2-1

=205+2-1

=208-1

=207

d,18:3+182+3.(51:17)

=18:3+182+3.3

=6+182+9

=188+9

=197

e,15-25:8(100.2)

=15-25:8.200

=15-3,125.200

=15-625

=-610

f,25.8-12.5+170:17-8

=200-60+10-8

=140+10-8

=150-8

=142

12:1400.(500-(125+25.70 tôi ko biết làm 

Bài 1: Thực hiện các phép tính sau:

\(a)\)Chưa rỏ đề

\(b)\)\(5025\div5-25\div5\)

\(=\)\(1005-5\)

\(=\)\(1000\)

\(c)\)\(218-180\div2\div9\)

\(=\)\(218-10\)

\(=\)\(208\)

\(d)\)\(\left(328-8\right)\div32\)

\(=\)\(320\div32\)

\(=\)\(10\)

Bài 1:

a) ( Tôi không nhìn rõ đầu bài )

b) 5025  :  5  -  25  :  5

=  ( 5025  -  25 )  :  5

=        5000   :   5

=       1000

c)   218  -  180  :  2  :  9

=     218   -    180  :  (  2  .  9 )

=      218    -    180   :  18

=       218    -    10

=       208

d)   (  328  -  8  )  :  32

=      320   :   32

=     10 

Bài 2: Thực hiện phép tính:

\(a)\)\(27.75+25.27-150\)

\(=\)\(27.\left(75+25\right)-150\)

\(=\)\(27.100-150\)

\(=\)\(2700-150\)

\(=\)\(2550\)

\(b)\)\(12\div\left\{400\div\left[500-\left(125+25.7\right)\right]\right\}\)

\(=\)\(12\div\left\{400\div\left[500-\left(125+175\right)\right]\right\}\)

\(=\)\(12\div\left\{400\div\left[500-300\right]\right\}\)

\(=\)\(12\div\left\{400\div200\right\}\)

\(=\)\(12\div2\)

\(=\)\(6\)

\(c)\)\(13.17-256\div16+14\div7-1\)

\(=\)\(221-16+2-1\)

\(=\)\(206\)

\(d)\)\(18\div3+182+3.\left(51\div17\right)\)

\(=\)\(6+182+3.3\)

\(=\)\(6+182+9\)

\(=\)\(197\)

a, mk làm kết quả lun.

=12:{400:[500-(125+175)]}

=12:{400:[500-300]}

=12:{400:200}

=12:2

=6

b,

=110-18:3

= 110-6

=104

k mk nha. k xong mk làm tiếp. dài quá nhưng cx dễ

a, 12 x 35 +35 x 182- 35 x 94

= 35 x ( 12 + 182 - 94 )

= 35 x 100

= 3500

b, 17 x 93 + 116 x 83 + 17 x 23

= 17 x ( 93 +23  ) + 116 x 83

= 17 x 116 + 116 x 83

= 116 x ( 83+17)

= 116 x 100

= 11600

Bấm mt

a) 12 : { 400 : [500 – (125 + 25 . 7)]} 

=12 : { 400 : [500 – (125 + 175)]} 

=12 : [ 400 : [500 – 300)]

=12 : (400:200)

=12:2=6

b) 5 . 2² – 18 : 3

=5.4-6

=20-6=14

c) 18 : 3 + 182 + 3.(51 : 17)

=5+182+3.3

=187+9=196

d) 25 . 8 – 12.5 + 170 : 17 – 8

=200-60+10-8

=142

e) 2.5²+ 3: 71⁰ – 54: 3³ 

=2.25+3:1-54:27

=50+3-2

=51

f) 189 + 73 + 211 + 127

=(189+211)+(73+127)
=400+200=600

g) 375 : {32 – [ 4 + (5. 32– 42)]} – 14 )

 =375 : {32 – [ 4 + (160– 42)]} – 14 )

 =375 : [32 – ( 4 + 118) – 14 ]

=375:(32-122-14)

=375:-104

=-375/104

h) (5²⁰²² + 5²⁰²¹) : 5²⁰²¹

=(5²⁰²²:5²⁰²¹)+(5²⁰²¹:5²⁰²¹)

=5+1=6