看看世界各地的小学生数学题，YOU'LL WONDER HOW YOU GRADUATED!

这是载于YAHOO的一篇文章，做一下这些数学题吧，因为很多人已人设崩溃。

20 Grade-School Math Questions So Hard You’ll Wonder How You Graduated（20道小学数学题太难了，你都不知道你是怎么毕业的）

If you thought your elementary school math was hard, then you won't believe the tricky math questions 4th and 5th graders are dealing with nowadays.（如果你认为你的小学数学很难，那么你不会相信四年级和五年级学生现在正在面对的棘手的数学难题）

Question 1: What is the number of the parking space covered by the car?（这辆车的停车位号码是多少？）

这道棘手的数学题几年前在香港一场六岁孩子的入学考试中出现后迅速走红。假设学生们只有20秒的时间来解决

Answer答案: 87

Believe it or not, this “math” question actually requires no math whatsoever. If you flip the image upside down, you’ll see that what you’re dealing with is a simple number sequence.(信不信由你，这个“数学”问题实际上根本不需要数学。如果你把图像倒过来，你会看到你处理的是一个简单的数列。)

结语: 如果你被惊到了，恭喜你，这是正常反应

Question 2:Replace the question mark in the above problem with the appropriate number.（用适当的数字填入题中的问号）

This problem shouldn’t be too difficult to solve if you play a lot of sudoku.

这个问题应不难解如果你经常玩九宫格游戏

Answer答案: 6.

All of the numbers in every row and column add up to 15! (Also, 6 is the only number not represented out of numbers 1 through 9.)每一行和每一列所有数字相加为15!(同样，6是1到9中没有出现过的数字)

结语: 这道题还好，虽然我都没做出来，看了答案感觉是个正常的题目

Question 3:Find the equivalent number.求相等的数字

This problem comes straight from a standardized test given in New York in 2014.（这个题目来源于2014年纽约进行的一次标准化考试。）

Answer答案: 9.

You’re forgiven if you don’t remember exactly how exponents work. In order to solve this problem, you simply need to subtract the exponents (4-2) and solve for 32, which expands into 3 x 3 and equals 9.（如果你不记得指数算法，那也没关系。为了解决这个问题，你只需要减去指数(4-2)然后解出3的2次方，它展开成3×3 = 9）

结语: 相信很多人都解出了来自大洋彼岸的这道题，这是小学6年级的题，所以做出来了也要矜持切忌沾沾自喜。

Question 4:There are 49 dogs signed up to complete in the dog show. There are 36 more small dogs than large doges signed up to complete. How many small dogs are signed up to complete 有49只狗报名参加了狗展，小狗比大狗多了36只。有多少只小狗报名参加

This question comes directly from a second grader’s math homework. Yikes. 这个问题来自于二年级数学家庭作业，呵呵。

Answer答案: 42.5 dogs

In order to figure out how many small dogs are competing, you have to subtract 36 from 49 and then divide that answer, 13, by 2, to get 6.5 dogs, or the number of big dogs competing. But you’re not done yet! You then have to add 6.5 to 36 to get the number of small dogs competing, which is 42.5. Of course, it’s not actually possible for half a dog to compete in a dog show, but for the sake of this math problem let’s assume that it is.

为了算出有多少只小狗在比赛，你必须从49中减去36，然后用这个答案，13除以2，得到6.5只狗，这是参加比赛的大狗数量。但你还没做完呢!然后你需要用6.5加上36才能得到参加比赛的小狗的数量，也就是42.5。当然，实际上不可能有半条狗参加狗展，但是为了这个数学问题，我们假设它是。

结语: 不清楚这是来自哪个国家的题目, 但在我记忆中我们的数学题从不会背离生命科学, 让半条狗爬着去参加狗展, 不用"假设它是", 以至于我算出来后一直认为这有半条狗的答案是错的.

Question 5:Find the area of the red triangle. 求红色三角形的面积

This question was used in China to identify gifted 5th graders. Supposedly, some of the smart students were able to solve this in less than one minute.这个问题在中国被用来鉴别五年级的天才。据说，一些聪明的学生能够在不到一分钟的时间内解决这个问题。

Answer: 9.

In order to solve this problem, you need to understand how the area of a parallelogram works. If you already know how the area of a parallelogram and the area of a triangle are related, then adding 79 and 10 and subsequently subtracting 72 and 8 to get 9 should make sense—but if you’re still confused, then check out this YouTube video for a more in-depth explanation.为了解决这个问题，你需要理解平行四边形的面积是如何工作的。如果你已经知道平行四边形的面积和三角形的面积是如何相关的，那么加上79和10，然后减去72和8得到9——但是如果你仍然感到困惑，那么看看YouTube上的这段视频，可以得到更深入的解释。

结语: 当然我不是天才, 而且连天才的边都沾不上,也没足够求知欲去YouTube找这段视频,直接PASS了这个魔性题目

Question 6: How tall is the table?桌子有多高?

YouTuber MindYourDecisions adapted this mind-boggling math question from a similar one found on an elementary school student’s homework in China. YouTuber "MindYourDecisions"这道令人难以置信的数学题改编自中国一名小学生的家庭作业。

Answer: 150 cm.

Since one measurement includes the cat’s height and subtracts the turtle’s and the other does the opposite, you can essentially just act like the two animals aren’t there. Therefore, all you have to do is add the two measurements—170 cm and 130 cm—together and divided them by 2 to get the table’s height, 150 cm. And while you’re testing your smarts, check out these 30 Real Trivial Pursuit Questions You Need to Be a Genius to Answer Correctly.因为一种测量方法包括猫的高度，然后减去乌龟的高度，而另一种测量方法正好相反，所以你基本上可以假装这两种动物不存在。因此，你所要做的就是把这两种测量值加起来——170厘米和130厘米——然后除以2得到桌子的高度，150厘米。当你在测试你的智慧时，看看这30个你需要成为天才才能正确回答的琐碎问题。

结语: 这样的小学生题目做多了, 很明显对自己的智商是种严重打击

Question 7: If the cost of a bat and a baseball combined is $1.10 and the bat costs 1.00 more than the ball, how much is the ball?如果一根球棒和一个棒球的成本加起来是1.10美元，而这根球棒的成本比球高1.00美元，那么这个球的成本是多少?

Answer: $0.05.

Think back to that problem about the dogs at the dog show and use the same logic to solve this problem. All you have to do is subtract $1.00 from $1.10 and then divide that answer, $0.10 by 2, to get your final answer, $0.05.

结语: 貌似比国产的难度低

Question 8: When is Cheryl's birthday? 谢丽尔的生日是什么时候?

“Albert and Bernard just became friends with Cheryl, and they want to know when her birthday is. Cheryl gives them a list of 10 possible dates. 艾伯特和伯纳德刚和谢丽尔成为朋友，他们想知道谢丽尔的生日是什么时候。谢丽尔给他们列出了10个可能的日期。

May 15(5月15) May 16(5月15) May 19(5月19)

June 17(6月17) June 18(6月18)

July 14(7月14) July 16(7 月16)

August 14(8月14) August 15(8月15) August 17(8月17)

Cheryl then tells Albert and Bernard separately the month and the day of her birthday respectively. 谢丽尔随后分别告诉艾伯特和伯纳德她生日的月份和日期。

Albert: I don’t know when Cheryl’s birthday is, but I know that Bernard doesn’t not know too. 阿尔伯特:我不知道谢丽尔的生日是什么时候，但我知道伯纳德也不知道。

Bernard: At first I don’t know when Cheryl’s birthday is, but I know now. 伯纳德:起初我不知道谢丽尔的生日是什么时候，但现在我知道了。

Albert: Then I also know when Cheryl’s birthday is. 阿尔伯特:那我也知道谢丽尔的生日是什么时候了。

So when is Cheryl’s birthday?” 谢丽尔的生日是什么时候?

It’s unclear why Cheryl couldn’t just tell both Albert and Bernard the month and day she was born, but that’s irrelevant to solving this problem.

谢丽尔为什么不能告诉艾伯特和伯纳德她出生的月份和日期，这还不清楚，但这与解决这个问题无关。

Answer: July 16.(7月16)

Confused about how one could possibly find any answer to this question? Don’t worry, so was most of the world when this question, taken from a Singapore and Asian Schools Math Olympiad competition, went viral a few years ago. Thankfully, though, the New York Times explains step-by-step how to get to July 16, and you can read their detailed deduction here.不知道怎样才能找到这个问题的答案?别担心，几年前，当这道题在新加坡和亚洲学校的数学奥林匹克竞赛中风靡一时时，世界上大多数国家也是如此。不过，谢天谢地，《纽约时报》一步步地解释了如何到达7月16日，你可以在这里阅读他们的详细推论。(抱歉打不开其链接所以不知道具体推论)

结语: 谢天谢地，我不认识叫“谢丽尔”的朋友，以后也不会有

Question 9: Find the missing letter. 找到缺失的字母

This one comes from a first grader’s homework.这是一个来自一年级的家庭作业

Answer: The missing letter is J. 答案：这个缺失的字母是J

When you add together the values given for S, B, and G, the sum comes out to 40, and making the missing letter J (which has a value of 14) makes the other diagonal’s sum the same.当你把S, B, G的值加起来，和是40，使缺失的字母J(值为14)使另一条对角线的和相同

结论：我很晕，严重

Question 10: Solve the equation.解这个等式

This problem might look easy, but a surprising number of adults are unable to solve it correctly.这个问题看起来很简单，但是有相当多的成年人不能正确地解决它。

结论： 我的答案是1，不知各位的答案是如何

Question 11: Where should a line be drawn to make the below equation accurate?

5 + 5 + 5 + 5 = 555.

Answer: A line should be drawn on a "+" sign.答:在“+”号上画一条线

When you draw a slanted line in the upper left quadrant of a “+,” it becomes the number 4 and the equation thusly becomes 5 + 545 + 5 = 555.

当你在“+”的左上象限画一条斜线时，它就变成了数字4，方程就变成了5 + 545 + 5 = 555

结论：当我看到上面这张图时，我居然有想扇自己一巴掌的冲动，君可有同感。

Question12: Solve the unfinished equation.解未完成方程

Try to figure out what all of the equations have in common试着找出所有这些方程的共同点

Answer: 4 = 256.

The formula used in each equation is 4x = Y. So, 41 = 4, 42 = 16, 43 = 64, and 44 = 256. 每个方程中用到的公式是4x = y，因此，41 = 4,42 = 16,43 = 64,44 = 256。

结论：我想弱弱问一句，如果我看了答案解说还不明白，是不是我就弱智了

Question13: How many triangles are in the image above? 问题:上图中有多少个三角形?

When Best Life first wrote about this deceiving question, we had to ask a mathematician to explain the answer! 当Best Life第一次写这个骗人的问题时，我们不得不请一位数学家来解释答案!

Answer: 18.

Some people get stumped by the triangles hiding inside of the triangles and others forget to include the giant triangle housing all of the others. Either way, very few individuals—even math teachers—have been able to find the correct answer to this problem. And for more questions that will put your former education to the test, check out these 30 Questions You’d Need to Ace to Pass 6th Grade Geography.有些人被隐藏在三角形内部的三角形难住了，而其他人忘记了包含所有其他三角形的巨型三角形。不管怎样，很少有人能够找到这个问题的正确答案，即使是数学老师

结论： 这题给了我些信心，因为我数对了，真的对了，我居然为做对一题小学生题目欣喜惹狂。

Question 14: Add 8.563 and 4.8292.求8.563和4.8292之和。

Adding two decimals together is easier than it looks.把两个小数相加比看起来容易。

Answer答案: 13.3922.

Don’t let the fact that 8.563 has fewer numberrs than 4.8292 trip you up. All you have to do is add a 0 to the end of 8.563 and then add like you normally would.不要让8.563的小数位少于4.8292的事实绊倒你。你要做的就是在8.563后面加一个0然后像平常一样加。

结论: 这题目就是个大陷井, 我直接把3和2加一起了

Question 15: There is a patch of lily pads on a lake. Every day, the patch doubles in size...

… If it takes 48 days for the patch to cover the entire lake, how long would it take for the patch to cover half of the lake?

问:湖里有一片睡莲叶子。每天，叶子的大小都翻倍……如果覆盖整个湖需要48天，那么覆盖半个湖需要多长时间?

Answer答案: 47 days.

Most people automatically assume that half of the lake would be covered in half the time, but this assumption is wrong. Since the patch of pads doubles in size every day, the lake would be half covered just one day before it was covered entirely.

大多数人想当然地认为一半的时间湖泊会被覆盖，但这种假设是错误的。由于叶子的面积每天都在增加一倍，湖泊在被完全覆盖的前一天就已经被覆盖了一半。

结论: 脑洞真的开的很大,可塞下大把稻草

Question 16: How many feet are in a mile?一英里等于几英尺

This elementary school-level problem is a little less problem solving and a little more memorization. 这个小学水平的问题，解答问题少了一点，记忆多了一点。

Answer: 5,280.

This was one of the questions featured on the popular show Are You Smarter Than a 5th Grader?这是热门节目《你比五年级学生聪明吗?》中的一个问题。

结语: 聪明是什么? 我开始问自己

Question 17: What value of "x" makes the equation below true?问:x的什么值使下面的方程成立?-15 + (-5x) = 0

Answer: -3.

You’d be forgiven for thinking that the answer was 3. However, since the number alongside x is negative, we need x to be negative as well in order to get to 0. Therefore, x has to be -3.如果你认为答案是3，那是可以理解的。但是，因为x旁边的数是负的，为了得到0, x也必须是负的。所以x = -3。

结语: 你的答案是3吗, 快告诉我你的答案是3吗?告诉我让我开心下

Question 18 : What is 1.92 divided by 3? 1.92除以3等于多少?

You might need to ask your kids for help on this one.你可能需要向你的孩子寻求帮助。

Answer: 0.64.

In order to solve this seemingly simple problem, you need to remove the decimal from 1.92 and act like it isn’t there. Once you’ve divided 192 by 3 to get 64, you can put the decimal place back where it belongs and get your final answer of 0.64.

为了解决这个看似简单的问题，你需要把小数点从1.92移开，然后假装它不存在。一旦你用192除以3得到64，你可以把小数点放回去得到0.64。

结论: 这绝对是道送分题,对中国的父母来说, 对答案解说有点发蒙.

Question 19: Solve the math equation above.解数学等式

Don’t forget about PEMDAS!别忘了运算顺序

Answer: 9.

Using PEMDAS (an acronym laying out the order in which you solve it: “parenthesis, exponents, multiplication, division, addition, subtraction”), you would first solve the addition inside of the parentheses (1 + 2 = 3), and from there finish the equation as it’s written from left to right.运用运算顺序(求解的顺序:“圆括号、指数、乘法、除法、加法、减法”)，首先要解圆括号内的加法(1 + 2 = 3)，然后按照从左到右的顺序完成方程。

结语: 我已被这题擂的外焦里嫩

Question 20: How many zombies are there? 这里有多少僵尸?

仓库里有85个人,一部分已变成了僵尸,一些还活着.假如僵尸对人的比例是2:3,这里有多少僵尸

Finding the answer to this final question will require using fractions.找到最后这个问题的答案需要用到分数。

Answer答案: 34.

Since we know that there are two zombies for every three humans and that 2 + 3 = 5, we can divide 85 by 5 to figure out that in total, there are 17 groups of humans and zombies. From there, we can then multiply 17 by 2 and 3 and learn that there are 34 zombies and 51 humans respectively. 因为我们知道每3个人中有2个僵尸，2 + 3 = 5，我们可以用85除以5来算出，总共有17组人类和僵尸。从这里，我们可以用17乘以2和3，我们知道有34个僵尸和51个人类。

结语: Not too bad, right? And if that wasn’t enough work for your brain, then keep going with these 15 Brain Games That Will Make You a Smarter Person. To discover more amazing secrets about living your best life, click here to follow us on Instagram!还不错,对吗? 如果这对你的大脑来说还不够，那就继续玩这15个让你变得更聪明的大脑游戏吧。想要发现更多精彩的生活秘诀，请点击这里关注Instagram!

对这样的邀请我果断的SAY NO!