Hasim, Norrin Learning maths 5B / Norrin Hasim. - Singapore : Singapore Asian Publication, 2009. - 95 p. : ill.: 26 cm. English ISBN: 13: 978-981-274-241-4 Subjects--Topical Terms: Math (Elementary)--Study and teachingMath--Activities, workbook LC Class. No.: 513.2 H27l c2009