Question

500x8+500x7+500x5

455x7+455x3

Answer 1

=10000

=4550

k nha

Answer 2

500 x 8 + 500 x 7 + 500 x 5 = 500 x (8 + 7 + 5)

                                          = 500 x 20

                                           = 10000

Answer 3

\(500\times8+500\times7+500\times5=500\times\left(8+7+5\right)=500\times20=10000\)

\(455\times7+455\times3=455\times\left(7+3\right)=455\times10=4550\)

Answer 4

500 x 8 + 500 x 7 + 500 x 5

= 500 x ( 8 + 7 + 5 )

= 500 x 20

= 10000

455 x 7 + 455 x 3

= 455 x ( 7 + 3 )

= 455 x 10

= 4550

Answer 5

Ta có : 

500 x 8 + 500 x 7 + 500 x 5

= 500 x ( 8 + 7 + 5 )

= 500 x 20

= 10000

455 x 7 + 455 x 3

= 455 x ( 7 + 3 )

= 455 x 10

= 4550