00477nam a22001337a 4500020002200000082002300022100002200045245010200067260006800169300003400237650001700271650002500288700003000313  a978-971-9644-73-6  aFil. 510 S237 20151 aSantos, Durwin C.10aMath activated 2 :bengaged yourself and our world /cDurwin C. Santos, Karl Bryan V. Sta. Maria.  aMakati City :bSalesiana Books by Don Bosco Press Inc.,cc2015.  a236 p. :bcol., ill. ; 27 cm.14aMathematics.24aBusiness arithmetic.1 aSta. Maria, Karl Bryan V.