Question

tính bằng cách thuận tiện:
12 x 156 -12 x 56

Answer 1

12 x 156 - 12 x 56

= 12 x (156 - 56)

= 12 x 100

= 1 200

Answer 2

12 x 156 -12 x 56

=12*(156-56)

=12*100

=1200

Answer 3

=12(156-56)

=1200

Answer 4

12 x 156 - 12 x 56

= 12 x (156 - 56)

= 12 x 100

= 1 200

Answer 5

12x(156-56)

=12x100

=1200

Answer 6

ez

 12x156-12x56

=12x(156-56)

=12x100

=1200