Question

Tính nhanh:

12345 x 17 + 23 x 12345 + 12345 + 12345 x 35 + 12345 x 24

Answer 1

12345 x 17 + 23 x 12345 + 12345 + 12345 x 35 + 12345 x 24

= 12345 x 17 + 23 x 12345 + 12345 x 1 + 12345 x 35 + 12345 x 24

=  12345  x (17 + 23 + 1 + 35 + 24)

= 12345  x 100

= 1234500

Answer 2

=> 12345 x (17 + 23 + 1 + 35 + 24 )

=> 12345 x 100

=> 1234500

Answer 3

= 12345 x ( 17 + 23 + 24 + 1 + 35 )    = 12345 x 100 = 1234500