Question

tinh bang cach thuan tien 

45*128-90*64

Answer 1

\(45\times128-90\times64\)

\(=45\times2\times64-90\times64\)

\(=90\times64-90\times64\)

\(=0\)

~ Hok tốt ~

Answer 2

45 x 128 - 90 x 64

= ( 45 x 128 ) - ( 90 x 64 )

= 5760  - 5760

= 0 

Answer 3

45×128-90×64

=45×2×64-90×64

=90×64-90-64

=0

Answer 4

45 x 128 - 90 x 64 

= 45 x 2 x 64 - 90 x 64

= 90 x 64 - 90 - 64

= 0

~Hok tốt~