Question

tính nhanh

1000 + 110 + 10 + 90

Answer 1

1000 + 110 + 10 + 90

= ( 90 + 10 ) + ( 1000 + 110 )

=     100       +       1110  =   1210

Answer 2

1000 + 110 + 10 + 90

= 1110 + 10 + 90

= 1120 + 90

= 1210

Ủng hộ nha ~

Answer 3

1000+110+10+90=1110+100=1210

Answer 4

1000 + 110 + 10 + 90

= 1000 + (90  + 10) + 110

=  1000 + 100 + 110

= 1210

Answer 5

1000 + 110 + 10 + 90 = 1210

Answer 6

1000+110+10+90

=[1000+110]+[10+90]

=1110+100

=1210

Answer 7

1210 nha

Answer 8

1000 + 110 + 10 + 90

= 1110 + 10 + 90

= 1120 + 90

= 1210