Mental mathematics - Mudassir, M.; Jha, Mahendra; Madhav, Achuthan (Chennai : Macmillan, 2003)
v. 3. 64 p.-- v. 4. 64 p.-- v. 5. 64 p.
first piblished 1995
Library has vols. 3,4 & 5
Keywords: Mathematics -- Study and teaching (elementary)