It is the mathematical puzzle by filling in each box of between 5 numbers with the arithmetical operations (such as +, -, ×, ÷), it is to complete the correct equation.
There is also a limit in time. As you get to a higher grade, the time will be shorten.
Have fun!
新版变化
v1.16 fixed(world ranking)
v1.15 fixed (mute setting)
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Math Puzzle Free
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