Fast Math - Double That Number!

cool quiz

i agree. i made my own quiz today but it is taking forever to get opened to public. sad face!!!!!!! :(

it's out now

it's been out for almost eleven months

lol it only takes like 24 four hours not 11 months

I like it! A 45 second version would be a real challenge. I can only get in 50 seconds.

Yes! You're right! (:

I took a minute.

People can do that on any quiz - prepare answers before starting it. If people want to cheat that way, leave them to it. It has no bearing on my enjoyment of this site and not sure why you are bothered about how others may or may not do these quizzes. I (and I assume you do given your comment) simply open a quiz and start it straight away without checking the questions as I like to test my knowledge first then gain knowledge when I see the answers I did not know. I wouldn't be surprised if I'd gained more knowledge in my few months on this site than I did from school :)

Ditto. I feel like I know even more now then I did before I created this account :)

Yeah. Before I hardly knew any countries, and now I know a large portion of them, and it’s the same with states.

I like the idea of only having the next question appear after the previous has been answered

+1

OK. Maybe this comment has the most replies.

No I don’t agree because I like to do the easier ones first not be forced to do them in order.

I agree with timbenz, what if you dont know the say the 2nd answer, but would have know all the other ones. (then it would seem for instance if you only knew 1/100 instead of 99/100 It just wouldnt work imo.

You could do that with any quiz. The point of this quiz site is to increase your knowledge, not to ace every quiz with the help of Google.

yea I allways deliberately dont look at the quest. But have wondered many times if others do or dont, very curious to know that. I think it is probably mixed ( leaning more to the "do-look first" side, if the competitive comments is anything to go by...)

14/20

1 second left... I almost missed it because I mistyped 882 as 8282, so I was rapidly backspacing with about 2 seconds left and basically jammed the keyboard typing 82 again... PHEW!

Good work, everyone! For what it's worth, I had 46 seconds left.

I'm usually terrible at math but this one was easy for me - 31 sec. left. Thank you, QM, for boosting my math self-esteem today. (Now if only I could find a way to nail those world capitals.)

7 seconds left!

should be rename "quick mafs"

Two plus two is four, minus one that's three, quick mafs.

Did it with 1:15 left! XD

I got them all with 49 seconds left

Mental Arithmetic...... how good are you? try my Sum the Numbers quiz .........here it is

i got 16/20 cringe!!!

great quiz. I got the last number with :01 to spare. Very good for mental Math.

I got all of them and i'm eleven, I cheated though and did it untimed!

im not showing this to my maths teacher haha

Nice one! was better than I though, only missed two. Felt more intuitive than actually doing the math after a while, but each time my answer was right, didnt have any mistakes, which surprised me actually. Because I typed it before I was even sure it was right (inner debate, nooo dont type it yet, we arent so yet -alter ego- no just dive right in, it ll be fine)

31 seconds remaining