Nintendo 3 ds Software Complete version of abacus, anzan and flash mental arithmetic

Product description ※Please note that product information is not in full comprehensive meaning because of the machine translation.

Flash mental arithmetic, which is currently a topic of conversation, was created for the purpose of practicing abacus mental arithmetic.
When the number of digits increases to two or three digits, it becomes difficult to calculate. However, with abacus mental arithmetic, since the brain captures numerical values as images, it can easily perform calculations that require many digits or that require speed.
Abacus is a traditional Japanese learning tool that is ideal for developing the number sense (number sense). As abacus improves, abacus mental arithmetic naturally develops.
The population of abacus is increasing in the world. Let's enjoy Tomoe flash mental arithmetic with friends from all over the world and improve your abacus skills!