25 squares calculation

This application is a fast-paced speed arithmetic game!
There are 5 number in the first row and 10 numbers in the first column. And you just add two numbers from top and left 5×5 =25 times like this.

Using this app, you can practice calculation with fun!
We offer subtraction and multiplication versions for this game as well. This application is devised for young children, but it is also useful for adults to keep their brain younger.

This game is derived from 100-cell calculation, which is invented to develop a fundamental mathematic capacity for young children in Japan. The original 100-cell calculation contains 10 numbers in the first row and 10 numbers in the first column.