Quick Math Test !

9 Answers
1+1+1+1+1+1+1+1+1+1-1+1+1+1+1x0 = ? Answer Options : 0 or 13

The answer to this question is 12.
This is because the final 1x0 would equal 0
We are now left with
As you can see, there is a secret minus hidden in there, and the sum of which would equal 12, not 0 or 13.

It is a mathematical rule that we need to finish the multiplications before moving onto the addition and subtraction calculations. Because there is a final one being multiplied by the number zero, that calculation will leave us with zero. Now we can move onto the calculations for the remaining additions with all those single one's. There are no subtractions so that makes the work somewhat slightly easier. We would need to count how many one's there are, and as you can see, there are twelve one's. Therefore, by adding together those separate ones we will get the sum total of twelve from the additions. We then add on the zero we have earlier worked out from multiplying one with zero, and therefore after the additions and the multiplication we would have the answer of twelve.

There is a very nice hidden trick in this question and it would normally be able to trick or deceive unsuspecting answerers because they may miss and not see the small hidden multiplication sign at the very end and think that all of them are additions and therefore add them to thirteen. Others might also get deceived because they remember the answer that every multiplied by zero will always equal zero. However, we need to remember the BEDMAS rule and that means we must go in the following order and solve the equations in the brackets first, and then the exponentials such as squared or squared roots. Then we can move onto the division and multiplications such as in the question here currently. Lastly we will move onto the additions and the subtractions, and that is why we would get to the answer of twelve and not zero.


I agree with the people who say that the correct answer is 12.

As the rules of mathematics say that you always multiply before doing addition, only the last 1 in the sequence is multiplied by 0. Likewise the minus sign is only applied the the 1 immediately afterwards.

The answer would be different if there were brackets around some of the numbers, but as it stands neither of the offered options is correct. The answer is definitely 12.

Sadly, if you are using a calculator you may well get the wrong answer.


I get neither. I get 12.

First, you must multiply the 1x0 to get 0. Then you do the other additions and the subtraction left to right.

So you get:



Hello and thanks for the math question. Here is my answer.

1+1+1+1+1+1+1+1+1+1-1+1+1+1+1 x 0 =

(1+1+1+1+1+1+1+1+1+1) - (1+1+1+1+1) x 0 =

10 - 5 x 0 =

5 x 0 = 0

The right answer is 0 (ZERO). Thank you for asking and good luck.



PEMDAS (parenthesis, exponents, multiplication, division, addition, subtraction) is the order in which to solve mathematical formulas.


The answer to this math equation is zero! Any number times zero is always zero! I just told my son this (again) tonight!


Ah, you're right! I didn't see the little minus sign in there. So many 1's and +'s...hard to look at.


You may multiply a google by zero and the answer will still be zero.


The answer is 12.