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

1994 x 867 + 1995 x 133

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

= 1994 x 867 + 1994 x 133 + 133

= 1994 x ( 867+133) + 133

= 1994 x 1000 + 133

= 1994000+ 133

= 1994133
 

\(1994\times867+1995\times133\)

\(=1994\times867+1994\times133+133\)

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

\(=1994\times1000+133\)

\(=1994000+133\)

\(=1994133\)

bn phai kb mik mi tra loi

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

b,có vẻ sai đề.

1994x867+1995x133

=1728798+265335

=1994133

nha bạn

aih thi cảm on

1994 x 867 + 1995 x 133

= 1994x867+(1994+1)x133

= 1994x867+1994x133+133

= 1994x(867+133)+133

= 1994x1000+133

= 1994000+133

= 1994133

= 1994133

k mk nha 

chuc ban hoc gioi

1994 x 867 + 1995 x 133

= 1728798 + 265335

= 1994133

Đáp số : 1994133

ủng hộ tớ nha

: D: 1994*867+1995*133=39890000

 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

\(=1994\times867+\left(1994+1\right)\times133\)

\(=1994\times867+1994\times133+133\)

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

\(=1994\times1000+133=1994000+133=1994133\)

(Cần sử dụng tính chất phân phối giữa phép nhân và phép cộng

\(a\times\left(b+c\right)=a\times b+a\times c\)

Theo cả hai chiều)

\(\Rightarrow\)

\(\text{Trả lời : }\)

      \(1994\cdot867+1995\cdot133\)

\(=1728798+265335\)

\(=1994133\)

a) \(\frac{3}{5}+\frac{6}{11}+\frac{7}{13}+\frac{2}{5}+\frac{16}{11}+\frac{19}{13}\)

\(=\left(\frac{3}{5}+\frac{2}{5}\right)+\left(\frac{6}{11}+\frac{16}{11}\right)+\left(\frac{7}{13}+\frac{19}{13}\right)\)

\(=1+2+2=5\)

b) \(\frac{1995}{1997}x\frac{1990}{1993}x\frac{1997}{1994}x\frac{1993}{1995}x\frac{997}{995}=\frac{1995x1990x1997x1993x997}{1997x1993x1994x1995x995}=\frac{1990x997}{1994x995}=\frac{995x2x997}{997x2x995}=1\)

a) =(3/5+2/5)+(6/11+16/11)+(19/13+7/13)

=5/5+22/11+26/13

=1+2+3

=6