Question

Tính nhanh

942-2567+2563-1942

Answer 1

=(942-1942)-(2567-2563)

=(-1000)-4

=-1004

Answer 2

=[ 1942 - 942] +   [ 2563+2567 ]

=1000  +  512

= 1512.

k mk nha mk kban

Answer 3

= ( 942- 1942 ) - ( 2567 - 2563 )

= ( - 1000 ) - 4

= 1004