500+200+50+50+200
=1000
chuc bn hoc gioi!
nhae
~~~~~~~~~~~~~~~
500+200+50+50+200
=(500+50+50)+(200+200)
=600+400
=1000
tk nhé
500 + 200 + 50 + 50 + 200
= 500 + ( 200 + 200 + 50 + 50 )
= 500 + 500
= 500 x 2
= 1000
500+200+50+50+200
=1000
Cậu k mình nha!!Mình k cậu hôm trước rồi đó!!!^_^
500+200+50+50+200=500+(50+50)+(200+200)
=500+100+400
=600+400
=1000