Addition(+) level example :
Touch one of the numbers on the left side ( for example :45)
Then you should touch the numbers on the right side (1 to 4 blocks) . Total number on the right side ( when you add ) should be even to the number on the left ( for example : 25 + 10 + 5 + 5 ) . Then bottom blocks will explode and it's number will be added to score .
It's the same for multiplication(x) level.
Enjoy this simple and fun brain exercise game!
Bonus blocks :
Black block with explosion icon destroys one block you selected from left side .
Orange block with circle arrow icon changes all blocks on the right side .
Black block with clock icon slows time for 20 seconds.