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Help
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, withing 24 hours on weekdays.
Customer service
All questions about your order, return and delivery must be sent to our customer service team by e-mail at yourstore@yourdomain.com
Sale & Press
If you are interested in selling our products, need more information about our brand or wish to make a collaboration, please contact us at press@yourdomain.com
Yohaku Junior is a new type of number puzzle that will test your number sense and problemsolving 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.
⚠️ WARNING (California Proposition 65):
This product may contain chemicals known to the State of California to cause cancer,
birth defects, or other reproductive harm.
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⚠️ California Proposition 65 Warning: Some products sold on this website may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.
