ISBN-13: 9781540888693 / Angielski / Miękka / 2016 / 74 str.
ISBN-13: 9781540888693 / Angielski / Miękka / 2016 / 74 str.
This book will teach you step-by-step how to perform addition and subtraction on a Chinese abacus. Clearly explained with text and colored pictures throughout every stage of your calculation. It has been specifically written for children.