Mental Math Training 123+. Training brain. It is many Number Calculate+-xÃ·
Strengthen the brain, arithmetic operations,
1 + 2 + 3
1 * 2 * 3
And other digital operations.
1 picture Simple
2 arithmetic combination of exercise
3 track record allows you to know exactly the speed of achievement
Over 4 exam
Suitable for children, adults as long as there is interest in computing.