Sum Points

Game rules:
two different types of numbers are given in the game,
One is a negative number can be dragged,
one is a positive number can not be drag,
Negative numbers can only be dragged from left to right in order,
Drag a negative number to move it to see a negative number as the center of a cross or diagonal,
Press OK button when you drag a negative number to the right place you think you are right,
If the positive integer is just in a negative number of the cross or the diagonal line,
the positive integer minus the negative value,
When you use up all the negative number, all positive number into 0,
Successful pass, if not, then through the failure, you can share for your children,
family or friends,And tell them the rules of the game,
Let them through their own thinking customs clearance, not only can improve
the children's thinking ability, but also to increase the children's fun,
What are you waiting for, please come and join us.