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Fast Math - Double That Number! (Typing Based)

Can you double all these numbers within the time limit? Test your mental math skills! This time around you have to type in all of it in 15 seconds. Basically impossible.
This quiz changes every time you play!
Quiz by FootballGeoGuy
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Last updated: April 28, 2019
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First submittedApril 28, 2019
Times taken3,453
Average score20.0%
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Number
Double
818
1636
951
1902
414
828
277
554
525
1050
Number
Double
342
684
618
1236
576
1152
281
562
291
582
Number
Double
652
1304
564
1128
358
716
402
804
86
172
Number
Double
742
1484
840
1680
661
1322
849
1698
878
1756
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