Forward Addition : 2 plus 3 equal to 5
Reverse Addition: 5 equal to 2 plus 3
They are the same !!
Forward Subtraction : 5 minus 3 equal to 2
Reverse Subtraction: 2 equal to 5 minus 3
They are the same !!
Thursday, 21 May 2009
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment