16 x (38 -2) -38 x (16-1)

=16 x 36 - 38 x 15

=576 - 570

=6

đáp số:6

16*(38-2)-38*(16-1)=6

\(16.\left(38-2\right)-38.\left(16-1\right)\\ =16.36-38.15\\ =576-570\\ =6\)

=16*38-16*2-38*16+38

=-16*2+38

=38-32=6

\(a,125.\left(-4\right).\left(-16\right).25.8\\ =125.8.25.\left(-4\right).\left(-16\right)=1000.\left(-100\right).\left(-16\right)\\ =1000.1600\\ =1600000\\ b,16.\left(38+2\right)-38.\left(16-2\right)\\ =16.40-38.14\\ =640-532\\ =108\)

a,    125.(-4).(-16).25.8

=(125.8). { (-4).25} .(-16)

= 1 000.(-100).(-16)

= 1 600 000

b, 16. (38+2) - 38.( 16 - 2)

= 16.38 + 16.2 - 38.16 + 38.2

= 2.(16 + 38)

= 2. 54

= 108

`a,125xx(-4)xx(-16)xx25xx8`

`=(125.8)xx{ (-4).25}xx(-16)`

`=1000xx(-100)xx(-16)`

`=1600000`

`b,16.(38+2)-38xx( 16 - 2)`

`= 16xx38+16xx2-38xx16+38xx2`

`=2xx(16 + 38)`

`=2xx54`

`=108`

`@Nae`

\(chtt\)

a: Sửa đề: \(16\left(38-2\right)-38\left(16-2\right)\)

\(=16\cdot38-16\cdot2-38\cdot16+38\cdot2=22\cdot2=44\)

b: \(=-25\cdot75+25\cdot45-75\cdot45+75\cdot25\)

\(=25\cdot45-75\cdot45\)

\(=45\cdot\left(-50\right)=-2250\)

Tính bằng cách hợp lý:

a, 16.(38-2).38.(16-1)
b,(-25).(75-45)-75(45-25)

Tính bằng cách hợp lý:

a, 16.(38-2).38.(16-1)
b,(-25).(75-45)-75(45-25)

Tính bằng cách hợp lý:

a, 16.(38-2).38.(16-1)
b,(-25).(75-45)-75(45-25)

Tính bằng cách hợp lý:

a, 16.(38-2).38.(16-1)
b,(-25).(75-45)-75(45-25)

Tính bằng cách hợp lý:

a, 16.(38-2).38.(16-1)
b,(-25).(75-45)-75(45-25)

Tính bằng cách hợp lý:

a, 16.(38-2).38.(16-1)
b,(-25).(75-45)-75(45-25)

Tính bằng cách hợp lý:

a, 16.(38-2).38.(16-1)
b,(-25).(75-45)-75(45-25)

Tính bằng cách hợp lý:

a, 16.(38-2).38.(16-1)
b,(-25).(75-45)-75(45-25)

Tính bằng cách hợp lý:

a, 16.(38-2).38.(16-1).
b,(-25).(75-45)-75(45-25)

bấm máy tính là cách nhanh nhất đấy bạn àh!

a) \(47.69-31\left(-47\right)=47-69-\left(-31\right).47\)

\(=47.69+31.47=47.\left(69+31\right)=47.100=4700\)

b) \(16\left(38-2\right)-38\left(16-1\right)=16.38-16.2-38.16-\left(-38\right).1\)

\(=\left(16.38-38.16\right)-32+38=0-32+38=6\)

c) \(\left(-41\right)\left(59-2\right)+59\left(41-2\right)\) \(=\left(-41\right).59-\left[\left(-41\right).2\right]+59.41-59.2\)

\(=\left[\left(-41\right).59+59.41\right]-\left[\left(-49\right).2-51.2\right]=0-\left(-100\right).2=200\)

d) \(125.\left(-8\right)\left(-25\right)9.4.1000\div3=125.200.9.4.1000\div3\)

\(=\left(125.4\right)\left(9\div3\right)\left(200.1000\right)=500.3.200000=300000000\)

a) \(-524\cdot\left[23+\left(-45\right)\right]+524\cdot\left(-45+123\right)\)

\(=-524\cdot\left[\left(23-45\right)-\left(-45+123\right)\right]\)

\(=-524\cdot\left(23-45+45-123\right)\)

\(=-524\cdot-100\)

\(=52400\)

b) \(47\cdot69-31\cdot\left(-47\right)\)

\(=-47\cdot\left(-69-31\right)\)

\(=-47\cdot-100\)

\(=4700\)

c) \(16\left(38-2\right)-38\left(16-1\right)\)

\(=16\cdot38-16\cdot2-38\cdot16+38\)

\(=-16\cdot2+38\)

\(=-36+38\)

\(=2\)

d) \(\left(-41\right)\cdot\left(59+2\right)+59\cdot\left(41-2\right)\)

\(=-41\cdot59-41\cdot2+41\cdot59-2\cdot59\)

\(=-41\cdot2-2\cdot59\)

\(=-2\left(41+59\right)\)

\(=-2\cdot100\)

\(=-200\)

e) \(25\cdot\left(-8\right)\cdot\left(-25\right)\cdot9\cdot4\cdot100^0:3\)

\(=\left(-1000\right)\cdot\left(-25\right)\cdot9\cdot4\cdot1:3\)

\(=25000\cdot9\cdot4:3\)

\(=25000\cdot3\cdot4\)

\(=100000\cdot3\)

\(=300000\)