Number Game Challenge

do you know add and subtract numbers ?how much challenge could it be doing that ?!and even if you are 7 or 70 years old , have a mobile or tablet , let's find the answer through Number new game , totally free game ,that will challenge your mind with two well-made modes :- level mode : you have to reach a number through add and subtract , but with some nice challenges , more levels will come by the time with more challenges !- left-or-right mode : with short time decide which column have the sum equal to a specific number , seems easy ? let's see your score !math is not magician , prepare your self for mini quizzes , and beat the numbers download now , and start the enjoyment ! * don't forgot to review if you like the game , thank you .