The 1st Global Math Challenge Official Workbook, U9 (for challengers under 9 years old).
Global Math Challenge is an online contest for all ages presented by Sony Global Education, Inc.
Developed in association with the Japan Prime Math Olympic Committee, the contest puts a strong focus on developing flexible, logical thinking using Japanese mathematics as a basis. These workbooks are packed with questions, answers and explanations from the contest that will delight math lovers of all ages.
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