$Mental math$
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Mental math

Bibliographic Details
Main Author:	Mariano, Ma. Luisa (Author)
Corporate Author:	University of the Philippines. Open University
Format:	Book
Language:	English
Published:	Quezon City UP Open University, Office of Academic Support & Instructional Services [2004]
Series:	UPOU m-learning series
Subjects:	Mental arithmetic. Mental calculators. Mathematics > Problems, exercises, etc.