Fast Math - Randomized Addition in 30 Seconds

In just 30 seconds, answer these randomly-generated addition problems in your head.
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 9, 2018
Times taken4,657
Average score37.5%
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 Problem 
Solution
497 + 102
599
309 + 255
564
171 + 1
172
38 + 499
537
65 + 460
525
16 + 387
403
149 + 390
539
6 + 86
92
253 + 57
310
216 + 43
259
372 + 9
381
483 + 2
485
573 + 5
578
440 + 80
520
424 + 29
453
34 + 463
497
1 Comments
+1
Level 60
Aug 17, 2023
The division one is easier for me, strangely.