If you want to live a long and happy life, it’s important to take care of yourself.

It’s a matter of having a healthy routine, eating properly – and keeping the brain in good shape.

Some of the best ways to exercise the mind, of course, are puzzles and quizzes. There are different types available, for example, Sudoku and Crosswords are perhaps the most common.

But thanks to the internet, now there is an incredible variety of puzzles to choose from, which is really great for those of us who enjoy a good challenge every now and then.

Testing yourself with a brain-teaser never hurts, most times it feels like you can think a bit more clearly after solving some puzzles. Of course, you use your brain at work as well, but it’s not quite the same thing as engaging in some logical thinking, without stress.

## Try to think back

Recently, a new type of challenge has appeared on the net, although the quizzes themselves are not particularly new.

It’s about good old school mathematics.

Trying this kind of challenge is exciting and fun, especially if it was a bunch of years since you last went to school.

It’s important to really think about it and try to remember those old rules of math your teacher kept writing on the chalkboard many years ago.

In addition, you must exercise your competitive instinct as well, which is always fun.

## Can you figure out the solution for this mathematics quiz – without a calculator?

Okay, now onto the challenge itself.

In the picture below, we see a mathematics problem made for middle schoolers.

The challenge: are you able to solve it without a calculator?

Remember the order of operations. What part should you solve first?

Think about it carefully so you answer correctly!

Below the next picture, you will find the correct answer.

## Here’s the answer.

The correct answer is **11.**

How do we know that **11** is the right answer?

To begin with, we need to solve the part inside the parenthesis, **12 ÷ 4 + 1**, which equals **4.**

After that, the problem looks like this: **15 – 1 x 4.** So the next step is to calculate the multiplication, that equals **4.**

So the problem now is **15 – 4**, which totals **11.**

The answer is then **11.**

**Did you get it right? Congratulations!**

**Now press the SHARE button and see how many of your friends can solve this mathematics quiz!**