Forget Singapore.

别提新加坡了。

The latest brain-mangling maths puzzle to hit the news is from Vietnam.

最近登上资讯头条的烧脑数学题来自越南。

It’s posted above. You need to fill in the gaps with the digits from 1 to 9 so that the equation makes sense, following the order of operations - multiply first, then division, addition and subtraction last.

如上图所示。你需要用1到9的数字将所有空格填满，并且使等式成立，计算的顺序为，先乘，接着除，然后是加，最后是减。

According to the VN Express, it was set as a problem for third graders in the town of Bao Loc in the Vietnamese highlands.

据报道，这道题目是越南保禄地区小学三年级的数学题。

That’s eight year olds!

他们可只有8岁啊!

There is no complicated maths involved, only basic arithmetic. But it’s not a walk in the park.

这题目没有涉及任何复杂的运算，只有基本的算术。但做起来一点也不容易。

“This problem is difficult even for adults good at math, so it will be difficult for students in grades 3, and even more challenging for students in the highlands, teacher Tran Phuong told VN Express.

一位老师说：“就算对数学很好的成年人来说，这道题也很难解。所以对三年级的学生来说肯定很难，对高地地区的学生就更难了。

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