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Fast Math - Double That Number! in 30 Seconds

In just 30 seconds, can you double all of these numbers?
This quiz changes every time you play!
Quiz by
Stewart
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Last updated: November 27, 2019
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First submittedApril 17, 2018
Times taken20,031
Average score43.8%
Rating4.20
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0:30
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0
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Scoring
You scored / = %
This beats or equals % of test takers also scored 100%
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Your fastest time is
Keep scrolling down for answers and more stats ...
 Number 
Double
377
754
311
622
291
582
332
664
 Number 
Double
864
1728
881
1762
306
612
797
1594
 Number 
Double
111
222
522
1044
147
294
743
1486
 Number 
Double
568
1136
351
702
619
1238
447
894
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1 Comments
+1
Level 20
Jun 29, 2025
You scored 16/16 = 100%

3% of test takers also scored 100%

The average score is 7

Your high score is 16

Your fastest time is 0:24

:D