Question

Tính nhanh :

1277 x 85 + 12,74 x 25 - 1874 x 10 

Answer 1

= ( 1277 + 12.74 ) x ( 85 + 25 ) -  1874 x 10

=  1289.74 x (110 - 10) - 1874

= 128974 - 1874

= 127100 

Answer 2

1277 x 85 + 12,74 x 25 - 1874 x 10 

= ( 1277 + 12,74 ) x ( 85 + 25 ) - 1874 x10

= 1289,74 x ( 110 - 10 ) -1874

=128974 - 1874

=127100Thục Hiền 2005

Answer 3

90123.5