Question

Hãy tính theo cách thuận tiện nhất : 2 x 4 x 5 x 6 x 15 x 25

Answer 1

2 x 4 x 5 x 6 x 15 x 25

= (2x5)x(6x15)x(4x25)

= 10 x 90 x 100

= 90000

Answer 2

2x4x5x6x15x25

=[2x5]x[4x25]x[6x15]

=10x100x90

=1000x90

=90000

h cho minh do ha

Answer 3

2 x 4 x 5 x 6 x 15 x 25

= ( 2 x 5 ) x ( 4 x 25 ) x ( 6 x 15 )

= 10 x 100 x 90

= 1000 x 90

= 90000

Answer 4

2 . 4 . 5 . 6 . 15 . 25

= 2 .5 .4.25.6.15

=10 . 100 .90

=1000. 90

=90000