Question

327+122+43+78

Answer 1

\(=\left(327+43\right)+\left(122+78\right)\\ =370+200\\ =570\)

Answer 2

=(327+43)+(122+78)=400+200=600

Answer 3

327+122+43+78

= ( 327 + 43) + ( 122+ 78)
= 370 + 200

= 570

Answer 4

Tính theo cách thuận tiện :

\(=\left(327+43\right)+\left(122+78\right)=370+200=570\)

Answer 5

570