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7 tháng 8

\(\left(123+164\right).75+164.925+25.123\)

\(=123.75+164.75+164.925+25.123\)

\(=123.\left(75+25\right)+164.\left(75+925\right)\)

\(=123.100+164.1000\)

\(=12300+164000\)

\(=176300\)

\(16:\left\{400:\left[200-\left(37+46.3\right)\right]\right\}\)

\(=16:\left\{400:\left[200-\left(37+138\right)\right]\right\}\)

\(=16:\left\{400:\left[200-175\right]\right\}\)

\(=16:\left\{400:25\right\}\)

\(=16:16\)

\(=1\)

 

NV
7 tháng 8

\(\left(123+164\right).75+164.925+25.123\)

\(=123.75+164.75+164.925+25.123\)

\(=\left(123.75+25.123\right)+\left(164.75+164.925\right)\)

\(=123.\left(75+25\right)+164.\left(75+925\right)\)

\(=123.100+164.1000\)

\(=12300+164000\)

\(=176300\)

=====================

\(16:\left\{400:\left[200-\left(37+46.3\right)\right]\right\}\)

\(=16:\left\{400:\left[200-175\right]\right\}\)

\(=16:\left\{400:25\right\}\)

\(=16:16\)

\(=1\)

Giải;

1) \(347.222-222.\left(216+184\right):8\) 

\(=347.222-222.400:8\) 

\(=347.222-222.50\) 

\(=222.\left(347-50\right)\) 

\(=222.297\)

\(=65934\) 

2) \(132-\left[116-\left(132-128\right).22\right]\) 

\(=132-\left[116-4.22\right]\) 

\(=132-\left[116-88\right]\) 

\(=132-28\) 

\(=104\) 

3) \(16:\left\{400:\left[200-\left(37+46.3\right)\right]\right\}\) 

\(=16:\left\{400:\left[200-\left(37+138\right)\right]\right\}\) 

\(=16:\left\{400:\left[200-175\right]\right\}\) 

\(=16:\left\{400:25\right\}\) 

\(=16:16\) 

\(=1\) 

4) \(\left\{184:\left[96-124:31\right]-2\right\}.3651\) 

\(=\left\{184:\left[96-4\right]-2\right\}.3651\) 

\(=\left\{184:92-2\right\}.3651\) 

\(=\left\{2-2\right\}.3651\) 

\(=0.3651\) 

\(=0\) 

5) \(46-\left[\left(16+71.4\right):15\right]-2\) 

\(=46-\left[\left(16+284\right):15\right]-2\) 

\(=46-\left[300:15\right]-2\)

 \(=46-20-2\) 

\(=24\)

6) \(3^3.18+72.4^2-41.18\) 

\(=18.\left(27-41\right)+72.16\) 

\(=18.-14+1152\) 

\(=-252+1152\) 

\(=900\)

Giải: (tiếp)

7) \(\left(56.46-25.23\right):23\) 

\(=\left(2576-575\right):23\) 

\(=2001:23\) 

\(=87\) 

8) \(\left(28.54+56.36\right):21:2\) 

\(=\left(1512+2016\right):21:2\) 

\(=3528:21:2\) 

\(=84\) 

9) \(\left(76.34-19.64\right):\left(38.9\right)\) 

\(=\left(2584-1216\right):342\) 

\(=1368:342\) 

\(=4\) 

10) \(\left(2+4+6+...+100\right).\left(36.333-108.111\right)\) 

\(=\left(2+4+6+...+100\right).\left(11988-11988\right)\) 

\(=\left(2+4+6+...+100\right).0\) 

\(=0\) 

11) \(\left(5.4^{11}-3.16^5\right):4^{10}\) 

\(=5.4^{11}:4^{10}-3.16^5:4^{10}\) 

\(=5.4-3.1\) 

\(=20-3\) 

\(=17\) 

12) \(7256.4375-725:3650+4375.7255\) 

\(=4375.\left(7256+7255\right)-\dfrac{29}{146}\) 

\(=4375.14511-\dfrac{29}{146}\) 

\(=63485624,8\) 

Câu 12 ko chắc!

15 tháng 12 2017

\(16\div\left\{400\div\left[200-\left(37+46.3\right)\right]\right\}\)

\(=16\div\left\{400\div\left[200-\left(37+138\right)\right]\right\}\)

\(=16\div\left\{400\div\left[200-175\right]\right\}\)

\(=16\div\left\{400\div25\right\}\)

\(=16\div16\)

\(=1\)

15 tháng 12 2017

16:{400:[200-(37+138)]}

16:{400:[200-175]}

16:{400:25}

16:16

1

Thực hiện phép tính: (Tính nhanh nếu có thể)1) 347.22 – 22 . ( 216 + 184 ) : 8  ;                    2) 132 – [116 – ( 132 – 128 )2]  ;3) 16 :{400 : [200 – ( 37 + 46 . 3 )]} ;                   4) {184 : [96 – 124 : 31 ] – 2 }. 3651   ;  5) 46 – [ (16 + 71 . 4 ) : 15 ]} – 2   ;                           6) 33.18 + 72 .42 – 41 .187)( 56 . 46 – 25 . 23 ) : 23     ;                                     8) ( 28 . 54 + 56 . 36 ) : 21 : 2  ;9) ( 76 . 34 – 19 . 64 ) : ( 38 . 9 )     ;       ...
Đọc tiếp

Thực hiện phép tính: (Tính nhanh nếu có thể)

1) 347.22 – 22 . ( 216 + 184 ) : 8  ;                    

2) 132 – [116 – ( 132 – 128 )2]  ;

3) 16 :{400 : [200 – ( 37 + 46 . 3 )]} ;                   

4) {184 : [96 – 124 : 31 ] – 2 }. 3651   ;  

5) 46 – [ (16 + 71 . 4 ) : 15 ]} – 2   ;                           

6) 33.18 + 72 .42 – 41 .18

7)( 56 . 46 – 25 . 23 ) : 23     ;                                     

8) ( 28 . 54 + 56 . 36 ) : 21 : 2  ;

9) ( 76 . 34 – 19 . 64 ) : ( 38 . 9 )     ;         

10) ( 2+ 4 + 6 + ….. + 100 ) . ( 36 . 333 – 108 . 111) 

11) ( 5 . 411- 3 .165 ): 410

12) \(\dfrac{7256.4375-725}{3650+4375.7255}\)

0
7 tháng 5 2019

a ) − 7 10 b ) 83 8 c ) − 3 4 d ) − 5 3

25 tháng 4 2020

a) -36

b) 390

c) 323

d) 1270

e) 0

f)  0

잘 공부

1: \(23+\left(-13\right)+\left(-50\right)\)

\(=23-13-50\)

=10-50

=-40

2: \(-5+15+\left(-123\right)\)

\(=\left(-5+15\right)-123\)

=10-123

=-113

3: \(5871:\left\{928-\left[\left(-82+247\right)\right]\right\}\cdot5\)

\(=5871-\left\{928+82-247\right\}\cdot5\)

\(=5871-763\cdot5=5871-3815=2056\)

4: \(40-\left(4\cdot5^2-3\cdot2^3\right)\)

\(=40-4\cdot5^2+3\cdot2^3\)

\(=40-4\cdot25+3\cdot8\)

=40-100+24

=64-100

=-36

5: \(6^2\cdot5-7^2+149\)

\(=36\cdot5-49+149\)

\(=180+149-49\)

=180+100

=280

6: \(-210:\left[16+3\cdot\left(6+3\cdot2^2\right)\right]+\left(-2022\right)\)

\(=-210:\left[16+3\cdot\left(6+3\cdot4\right)\right]+\left(-2022\right)\)

\(=-210:\left[16+3\cdot18\right]+\left(-2022\right)\)

\(=-210:70-2022\)

=-3-2022

=-2025

7: \(5\cdot2^3+7^{11}:7^9-2023^0\cdot1^8\)

\(=5\cdot8+7^2-1\)

=40+49-1

=39+49

=88

8: \(400:\left\{5\cdot\left[360-\left(290+2\cdot5^2\right)\right]\right\}\)

\(=400:\left\{5\cdot\left[360-290-2\cdot25\right]\right\}\)

\(=400:\left\{5\cdot20\right\}\)

\(=\dfrac{400}{100}=4\)

9: \(75-\left(3\cdot5^2\right)-4\cdot5^3\)

\(=75-3\cdot25-4\cdot5^3\)

=-4*125

=-500

25 tháng 8 2019

tí 

mk 

lm 

cho

25 tháng 8 2019

đủ tí chưa bạn :Đ????

14 tháng 7 2019

7 tháng 4 2020

123+456+777+444=(123+777)+(456+444)

7 tháng 4 2020

=1000+1000=2000