Question

Câu 3. Tính bằng cách thuận tiện nhất:

              20 x 2021 x 50

Answer 1

=2021x100=202100

Answer 2

20x2021x50

=2021x(20x50)

=2021x100

=202100

Answer 3

 20 x 2021 x 50

= 2021 x ( 20 x 50 )

= 2021 x 1000

= 2021000

Answer 4

  20 x 2021 x 50 
= (20 x 50) x 2021
= 1000 x 2021
= 2021000

Answer 5

= 2021 x ( 20 x 50 )

= 2021 x 1000

= 2 021 000.

Answer 6

20x2021x50

= ( 20x50) x2021

=1000x2021

= 2021000