Question

Tính nhanh

245 x 3 - 7 x 245 + 14 x 245

Answer 1

245*(3-7+14)

=245*10

=2450

Answer 2

= 245 x (3+14-7)

= 245 x 10

= 2450

Answer 3

43701630

Answer 4

\(245\times3-7\times245+14\times245\)

\(=245\times\left(3-7+14\right)\)

\(=245\times10\)

\(=2450\)

Answer 5

245 x 3 - 7 x 245 + 14 x 245

= 245 x (14 - 7 + 3 )

= 245 x 10 

= 2450

Answer 6

245 x 3 - 7 x 245 + 14 x 245

=245x(3-7+14)

=245x10

=2450

!

Answer 7

245 x 3 - 7 x 245 + 14 x 245

= 245 x ( 3 - 7 + 14 )

= 245 x 10

= 2450

Answer 8

245 * (3 +14-7) 

=245*10

=2450

Answer 9

245 x 3 - 7 x 245 + 14 x 245 

=  245 x ( 3 - 7 + 14 )

=  245 x      10

=    2450

~ hok tốt ~