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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 taken19,786
Average score43.8%
Rating4.20
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0:30
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You scored / = %
This beats or equals % of test takers also scored 100%
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Your fastest time is
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 Number 
Double
993
1986
44
88
800
1600
272
544
 Number 
Double
753
1506
631
1262
164
328
105
210
 Number 
Double
359
718
664
1328
820
1640
692
1384
 Number 
Double
39
78
847
1694
215
430
543
1086
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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