Question

4000+5000+1000=

Answer 1

4000+5000+1000

=(4000+1000)+5000

=5000+5000

=5000.2

=10000

k mk nhe

mik k bn oi

Answer 2

4000+5000+1000

=9000+1000

=1000

Answer 3

4000+5000+1000=10000

k cho mik nhe 

happy new year

Answer 4

=10000

Answer 5

4000 + 5000 + 1000

= 9000 + 1000

= 10000

happy new year

Answer 6

4000+5000+1000=10000

k mik nhé

Answer 7

=10000 nhé