Hien Nguyen
Ratio Master
FreeDo you keep yourself awake at night trying to figure out math ratio questions like "what is X, if (5/7) = (9/X)?" Are you racking your brains...
iOSMathematical Madness
FreeQuick: what's 11 x 12? Too slow... it's 132! You'll never make it in life with such slow math skills! Fortunately for you, Mathematical Madness is...
iOS