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Fast Math - Double That Number!

Can you double all these numbers within the time limit? Test your mental math skills!
This quiz changes every time you play!
Quiz by Quizmaster
Rate:
Featured Quiz
Last updated: September 4, 2018
More quiz info >>
First submittedApril 25, 2017
Times taken198,400
Rating4.72
Quiz and answer stats >>
1:15
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Keep scrolling down for answers and more stats ...
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Double
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Double
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Number
Double
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Double
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Falcons11
+12
Level 28
Apr 25, 2017
cool quiz
TheGeographyGuy
+4
Level 36
Apr 2, 2018
i agree. i made my own quiz today but it is taking forever to get opened to public. sad face!!!!!!! :(
TheGeographyGuy
+6
Level 36
Feb 24, 2019
it's out now
TheGeographyGuy
+14
Level 36
Feb 24, 2019
it's been out for almost eleven months
BlocksWearSocks
+4
Level 28
Dec 22, 2019
lol it only takes like 24 four hours not 11 months
jnr
+3
Level 53
Mar 20, 2020
I like this monologue
Quizzer6794
+2
Level 64
Apr 25, 2017
I like it! A 45 second version would be a real challenge. I can only get in 50 seconds.
Pandora49
+1
Level 51
Mar 20, 2020
Yes! You're right! (:
Jor85
+1
Level 87
Jun 16, 2017
21'' left
Jor85
+1
Level 87
Jun 17, 2017
25'' left
Jor85
+1
Level 87
Jun 19, 2017
30'' left
Jor85
+1
Level 87
Jul 13, 2017
32'' left
Jor85
+1
Level 87
Jul 14, 2017
33'' left
someone2018
+1
Level 82
Oct 21, 2018
I gonna go the whole yard. 36" left.
mahble
+3
Level 71
Jul 25, 2017
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!
Jor85
+1
Level 87
Sep 19, 2017
36 seconds left
Pimbard6
+1
Level 74
Sep 19, 2017
Good work, everyone!

For what it's worth, I had 46 seconds left.

ander217
+1
Level 78
Sep 19, 2017
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.)
Mosestomtom
+2
Level 38
Sep 19, 2017
Got stuck on 966! damn
Ampo
+1
Level 44
Sep 23, 2017
great quiz! did it in 40 seconds
Jor85
+1
Level 87
Sep 27, 2017
40'' left
Franpuemont
+1
Level 13
Oct 2, 2017
7 seconds left!
JCBCFC
+1
Level 43
Nov 1, 2017
Did it with 30 seconds left
Subara
+2
Level 36
Nov 5, 2017
should be rename "quick mafs"
Froststar101
+1
Level 66
Nov 5, 2017
Two plus two is four, minus one that's three, quick mafs.
Timbenz
+1
Level 27
Nov 5, 2017
Did it with 1:15 left!

XD

JlDaBeast123
+1
Level 2
Dec 7, 2017
I got them all with 49 seconds left
Malbaby
+1
Level 70
Dec 9, 2017
Mental Arithmetic...... how good are you? try my Sum the Numbers quiz .........here it is
TheGeographyGuy
+1
Level 36
Apr 2, 2018
i got 16/20 cringe!!!
crazynbafan8
+1
Level 15
Apr 6, 2018
i did it with 29 seconds remaining
Papaya
+1
Level 46
Apr 18, 2018
Oh, the numbers change every time. Nice.
x277
+1
Level 21
May 1, 2018
great quiz. I got the last number with :01 to spare. Very good for mental Math.
ImAJetPunk
+1
Level 18
May 18, 2018
I got all of them and i'm eleven, I cheated though and did it untimed!
vinchenzo
+1
Level 17
Jul 17, 2018
30 seconds left!
JoshB04
+1
Level 24
Jul 18, 2018
im not showing this to my maths teacher haha
delpieric
+1
Level 25
Oct 1, 2018
35 seconds remaining.
Anshul
+1
Level 40
Nov 15, 2018
9 seconds left
Sifhraven
+1
Level 67
Dec 8, 2018
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)

Raz07
+1
Level 56
May 10, 2019
31 seconds remaining
DenisFC
+1
Level 24
Sep 23, 2020
nice quiz!
turnbacktwo
+1
Level 33
Dec 10, 2020
wonder what the biggest number is that you can double. The biggest I've got was 998
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