Question

54 x 2 x 9 x 5 =

246 x 62 + 246 x 38 =

428 x 56 - 428 x 46=

 

Answer 1

54 x 2 x 9 x 5

= 54 x 9 x 2 x 5

= 486 x 10

= 4860

246 x 62 + 246 x 38

= 246 x ( 62 + 38 )

= 246 x 100

= 24600

428 x 56 - 428   x 46

= 428 x ( 56 - 46 )

= 428 x 10

=  4280

Answer 2

   54 x 2 x 9 x 5 

= 108 x 45

= 4860

   246 x 62 + 246 x 38

= 246 x ( 62 + 38 )

= 246 x 100

= 24600

   428 x 56 - 428 x 46

= 428 x ( 56 - 46 )

= 428 x 10

= 4280

Chúc bạn học tốt nha !

Answer 3

54 x 2 x 9 x 5 

= (2 x 5) x 54 x 9

= 10 x 486

= 4860

246 x 62 + 246 x 38

= (62 + 38) x 246

= 100 x 246

= 24600

428 x 56 - 428 x 46

= (56 - 43) x 428

= 10 x 428

= 4280

Answer 4

54 x 2 x 9 x 5

= ( 2 x 5 ) x 54 x 9

= 10 x 54 x 9

= 540 x 9

= 4860

246 x 62 + 246 x 38

= 246 x ( 62 + 38 )

= 246 x 100

= 24600

428 x 56 - 428 x 46

= 428 x ( 56 - 46 )

= 428 x 10

= 4280