64 x 867 + 867 x 36 - 30 x 867

= 867 x ( 64 + 36 - 30 )

= 867 x 70

= 60 690

\(64\times867+867\times36-30\times867\)

\(=867\times\left(64+24-30\right)\)

\(=867\times70\)

\(=60690\)

64 x 867 + 867 x 36 – 30 x 867

= 867 x ( 64 + 24 - 30 )

= 867 x 70

= 60 609

Hok tốt

bn phai kb mik mi tra loi

a,2009x867+2009x133=2009x(867+133)=2009x1000=2009000

b,có vẻ sai đề.

Tính giá trị biểu thức sau bằng cách thuân tiện nhất 

a,2009 x 867 + 2009 x 133

= 2009 x ( 867 + 133 )

= 2009 x 1000

= 2009000

b ,2008 x 867 + 2009 x 133

= 2008 × 867 + (2008 + 1) × 133                      

= 2008 × 867 + 2008 × 133 + 133                    

= 2008 × (867 + 133) + 133                               

= 2008 × 1000 + 133                                          

= 2008000 + 133                                              

= 2008133

1994x867+1995x133

=1994x867+1994x133+133

=1994x(867+133)+133

=1994x1000+133

=1994000+133

=1994133

=1994*867+(1994+1)*133

=1994*867+1994*133+133=1994*(867+133)+133

=1994*1000+133=1994000+133

=1994133

\(1994x867+1995x133\)

\(=1994x867+\left(1994+1\right)x133\)

\(=1994x867+1994x133+133\)

\(=1994x\left(867+133\right)+133\)

\(=1994x1000+133\)

\(=1994000+133\)

\(=1994333\)

Chúc bạn học tốt !!!! 

Đánh nhầm : \(1994133\)

1994 nhân 867+1995*133=1994*867+1994*133+133=1994*1000+133=1994133

c ) 815 - 23 - 77 + 185 

= ( 815 + 185 ) - ( 23 + 77 )

= 1000 - 100 = 900

m ) 8 x 427 x 3 + 6 x 573 x 4

= 24 x 427 + 24 x 573

= 24 x ( 427 + 573 ) 

= 24 x 1000

= 24000

g ) 52 - 42 + 37 + 28 - 38 + 63

= ( 52 + 28 ) - ( 42 + 38 ) + ( 37 + 63 )

= 80 - 80 + 100

= 0 + 100

= 100

h ) 35 x 18 - 9 x 70 + 100

= 7 x 5 x 9 x 2 - 9 x 7 x 5 x 2 + 100

= 0 + 100

= 100

n ) 2008 x 867 + 2009 x 133

= 2008 x 867 + ( 2008 + 1 ) x 133

= 2008 x 867 + 2008 x 133 + 133

= 2008 x ( 867 + 133 ) + 133

= 2008 x 1000 + 133

= 2008000 + 133

= 2008133

i ) 326 x 78 + 327 x 22

= 326 x 78 + ( 326 + 1 ) x 22

= 326 x 78 + 326 x 22 + 22

= 326 x ( 78 + 22 )  + 22

= 326 x 100 + 22

= 32600 +22

= 32622

q ) ( 20 + 21 + 22 + 23 + 24 + 25 ) x ( 16 - 2 x 8 ) 

= ( 20 + 21 + 22 + 23 + 24 + 25 ) x ( 16 - 16) 

= ( 20 + 21 + 22 + 23 + 24 + 25 ) x 0

= 0

thank bạn

a) 25 + 69 + 75 + 11

= (25 + 75) + (69 + 11)

= 100 + 80

= 180

b) 64 x 867 + 36 x 867

= (64 + 36) x 867 

= 100 x 867

= 86700

c) 25 x 989 x 4 + 25

= 25 x 4 x 989 + 25

= 100 x 989 + 25

= 98900 + 25

= 98925

a)25 + 69 + 75 + 11 

=(25 + 75) + (69 + 11)

=100 + 80

=180

b)64 * 867 + 36 * 867

=(64 + 36) * 867

=100 * 867

=86700

c)25 * 989 * 4 +25

=25*3956+25

=25*(3956+1)

=25*3957

=98925

(25+75)+(69+11)

1994 . 867 + 1995 . 133

=1994.867+ (1994+1).133

=1994.867+1994.133+1994

=1994.(867+133)+1994

=1994.1000+1994

=1994000+1994

=1995994

k mình nha!

Đs:1994000

1995994

2013 x 867 + 132 x 2013 + 2083

= 2013 x 867 + 132 x 867 + 2013 + 70 

= 2013 x ( 867 + 132 + 1 ) + 70

= 2013 x 1000 + 70

= 2013070

2013 x 867 + 132 x 2013 + 2013 + 70

= 2013 ( 867 + 132 + 1 ) + 70

= 2013 x 1000 + 70

= 2013070

hok tốt

      [ Giải: ]

= 2013 .  867 + 2013 . 132 + 2013 + 70

= 2013 . ( 867 + 132 + 1 ) + 70

= 2013 . 1000 + 70

= 20 130 000 + 70

= 20 130 070

                    [ Hoq chắc ]

 8 x 427 x 3 + 6 x 573 x 4

= 8 x 3 x 427 + 6 x 4 x 573

= 24 x 427 + 24 x 573

= 24 x (427 + 573)

= 24 x 1000

= 24000

 2008 x 867 + 2009 x 133

= 2008 x 867 + 2008 x 133 + 133

= 2008 x (867 + 133) + 133

= 2008 x 1000 + 133

= 2008133

tick cho mink nhé

a) \(8x427x3+6x573x4\)

\(=8x3x427+6x4x573\)

\(=24x427+24x573\)

\(=24x\left(427+573\right)\)

\(=24x1000\)

\(=24000\)

b) \(2008x867+2009x133\)

\(=2008x867+\left(2008+1\right)x133\)

\(=2008x867+2008x133+133\)

\(=2008x\left(867+133\right)+133\)

\(=2008x1000+133\)

\(=2008000+133\)

\(=2008133\)