Friend's Email: Subject:I have found a book that I think you would enjoy
Primary Mathematics 5A Workbook, Third Edition
Primary Mathematics 5A Workbook Third Edition Author:Hong Third Edition. The math book series is used in Singapore, which has scored the highest in math in the last two (international) TIMSS studies. Though this is the Singaporean version, it is all in English!
ISBN: 981 01 5658 8