Question

Tính nhanh:

326 x 728+ 327 × 272           

2008 ×867+ 2009× 133

Answer 1

326 x 728+ 327 × 272  =

237328+88944=  326272

2008 ×867+ 2009× 133 =

1740936+267197=2008133

nhớ k minh nha

Answer 2

a, 326 x 728 + 327 x 272

= ( 326 + 1 ) x 728 + 327 x 272

= 327 x 728 + 327 x 272 

= 327 x ( 728 + 272 ) 

= 327 x 1000

= 327000

b, 2008 x 867 + 2009 x 133

= ( 2008 + 1 ) x 867 + 2009 x 133

= 2009 x 867 + 2009 x 133

= 2009 x ( 867 + 133 ) 

= 2009 x 1000

= 2009000