Ans 6:
Ans 9:
Ans 13:
Class : Class 4
this is a very good queston .It is tricky as well as twistedans is d 16 because by doing dmas rule we will get the ans as 16 .Most of the students does not apply the dmas rule so they will get the ans as 12 is there calculation is correct and they have read (past form) the question properly