200 + 300 + 500 + 900
= 500 + 500 + 900
= 1000 + 900
= 1900
200+300+500+900
=500+500+900
=1000+900
=1900
\(200+300+500+900\)
\(=500+500+900\)
\(=1000+900\)
\(=1900\)
200 + 300 + 500 +900
= 500 + 500 + 900
= 1000 + 900
= 1900
tk mk , mk tk lại
200+300+500+900
=500+500+900
=1000+900
=1900
vậy kết quả là 1900
200 + 300 + 500 + 900 = 1900
tk mk nha