Daiso indo calculator

 "Indian Math Drill Easy" 
 The "Daiso India Calculation Series" has been released, which is the topic of conversation and can master Indian calculation. 
 The "Easy Edition" has been compiled with a focus on the basics and basics so that even people who say "I've heard about Indian calculation in Kotoba for the first time" and "What is Indian calculation in the first place?" 
 In addition, the explanation is easy for children to understand, so it is a book that the whole family can enjoy. 
 Dad was the slowest to calculate. It may happen.

 "Indian Math Drill Challenge" 
 The "Challenge Edition" is a high-level book for those who "mastered a gentle edition" or "I want to improve the skills of Indian calculation". 
 If you master this, you can quickly do daily shopping, splitting after having a fun meal, and calorie calculation that is a little worrisome with crisp mental calculation. 
 Also, as in the “Easy Edition”, the explanations are easy for children to understand, so they can be enjoyed by the whole family, and recently it is also useful for brain activity of spear.