Yohaku Junior(TM) is a new type of number puzzle that will test your number sense and problem-solving skills. This third Yohaku Junior book is full of additive and multiplicative puzzles especially for students of primary school age. Your task is to fill in the empty cells such that they give the sum or product shown in each row and column. The puzzles build on from those in Yohaku Junior Book 1 and Yohaku Junior Book 2.