Question

tính nhanh :

2 x 8 x 50 x 25 x 125

Answer 1

=2x50x8x125x25

=100x1000x25

=2500000

Answer 2

`= 2 xx 50 xx 125 xx 8 xx 25`

`= 100 xx 1000 xx 25`

`= 2500000`.

Answer 3

\(= (2 × 50) × (8 × 125) × 25=100 × 1000 × 25=100000 × 25 = 2500000\)

Answer 4

2 x 8 x 50 x 25 x 125

(2 x 50)x (8 x 125) x 25

100       x    1000    x 25

                    2500000

Answer 5

=(2x50)x(8x125)x25

=100x1000x8

=100000x25

=2500000