Question

tính nhanh
2459-(400+459)

 

Answer 1

2459-400-459

=2000-400

=1600

Answer 2

\(=1600\)

Answer 3

2459 - (400 + 459)

= 2459 - 400 - 459

= (2459 - 459) - 400

= 2400 - 400

= 2000

Answer 4

=2459-400-459

=(2459-459)-400

=2000-400

=1600

Answer 5

a) 

Answer 6

= 1600

Answer 7

= 1600 

Answer 8

(bn tự ghi đề nha)

=2459-400-459

=(2459-459)-400

=2000-400

=1600

Answer 9

2459 - 400 - 459

= ( 2459 - 459 ) - 400

= 2000 - 400

= 1600

Answer 10

hhhhhhhhhhhhhhhhhhhhhh

Answer 11

= 1600

Answer 12

 2459 - [ 400 + 459 ] 

= 2459 - 859

=  1600