Are you smarter than a fifth grader? No, we're not offering a cash prize if you can prove it. But after struggling with these "easy" math questions we'd like to see how many you can solve.

We promise you don't need a calculator for any questions, but keep a **pencil and paper** handy because **the answers are on the last page!**

### 1. Let's start simple

A study in Japan found that 60% of people in their 20s got this question right, compared to 90% of older generations. We're not sure what being a millennial has to do with math, but see if you can solve this equation.

### 2. What's the ?

The aim of this puzzle is to solve what number is in the ? space. Yes, it's really that simple. And no, we can't give you any other clues.

### 3. The bat and the ball

This is an oldie but a goodie:

A baseball bat with a ball costs **$1.10**. The bat **cost $1 more** than the ball. **How much does the ball cost?**

### 4. Let's Make a Deal

You're competing on a game show where there are three doors. One door is hiding **$1 million**, the other doors are **empty**.

You pick **door #1**. The host opens **door #3** and reveals that it is empty. He asks you if you want to **keep door #1 **or **switch to door #2**.

Which is the best answer?

### 5. Here's a head-scratcher

Take a look at this equation and see if you can solve it:

What's the answer?

### 6. Lily pad logic

There's a lake with a patch of lily pads growing on it. Every day, the patch **doubles in size**. If it takes **48 days** to cover the whole lake, how long would it take to cover just half of the lake?

**If those aren't tough enough we have more questions, and of course the answers are on the last page.**

### 7. The penny question

Which is better? Being given **$10 million** right now, or getting a penny today, two pennies tomorrow, four pennies the next day and so on **for a month?**

### 8. Mental math

Don't use a calculator or pencil for this question, do all the math in your head.

Now write down your answer.

### 9. Solve the equation

### 10. This one is tricky

They say that a six-year-old can solve this in just 20 seconds. It takes some adults a lot longer.

### 11. This one could drive you insane

### 12. The missing dollar

Read this story about a boy buying a shirt and see if you can make heads or tails of it:

### 13. Parents hated this homework question

Can you see where they all went wrong trying to solve it?

**Turn to the next page for the answers - if you're brave enough!**

### Answers

**Question 1:** 1 (You should divide the 3 by 1/3 first to get this answer).

**Question 2: **6 (All the rows and columns in the puzzle add up to 15).

**Question 3: **5 cents (People assume the ball must cost 10 cents, but if that was true that bat would be $1, and only 90 cents more expensive).

**Question 4: **You should switch. When you picked a door your odds were 1/3. With door #3 removed, your odds are now 1/2. BUT you were more likely to pick an empty door first, so switching is the better option. If you're still confused you can watch a video to see a longer explanation.

**Question 5: **9. After doing the brackets and exponents, remember to work from left to right. The problem goes like this: 6í·2(1+2) equals 6í·2*(1+2), which is the same as 6í·2*3 or 3*3 = 9.

**Question 6: **47 (If the patch doubles in size every day, on day 47 it's half as big as day 48, and covers half the lake).

**Question 7: **The pennies are the better choice. By the end of the month, they'll have doubled and doubled to make $10,737,418.23. Really! These guys did the math for you.

**Question 8: **4,100. By the end of the problem, you get so used to adding without "carrying over" that you probably jumped from 4,090 to 5,000. Oops!

**Question 9: **2. The equation is just the last line, the first two are unrelated. Sorry, that one was a little mean!

**Question 10: **It's parking space 87. Try looking at the problem upside down.

**Question 11:**14. Look closely at the last line: bananas are worth one each and coconuts are worth one each. As you can see, there's just one coconut and three bananas in the final question.

**Question 12: **There was no missing dollar. The boy makes the mistake at the end of the story when he adds up the two $49 debts ($98) and then adds his $1. He should subtract his $1 instead, to end up at $97, the price of the shirt.

**Question 13: **65. Try working backwards, that makes the question much easier.

**How many did you get right?**