developer20141231

developer20141231 published 2 applications on Google Play, 5 people rated these apps with an average rating of 2.91!

mental arithmetic test.Grade 7 by developer20141231mental arithmetic test.Grade 7

Rated 3.33(3) — developer20141231

Do you know the mental arithmetic?There is a test of mental arithmetic in JapanIt is a 7-class mental arithmetic test.Let's try to measure whether there is how much is my ability

Free App
the Japanese abacus by developer20141231the Japanese abacus

Rated 2.50(2) — developer20141231

This is the Japanese abacus.I've combined a calculator and abacus.You can learn one of the Japanese abacus functions.

Free App