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Fast Math - Subtraction Quiz in 40 Seconds

In 40 seconds, which is 2 seconds per answer, try to beat the clock by answering these randomly-generated subtraction problems in your head.
Also try Photop's two-minute version with points
This quiz changes every time you play!
Quiz by
Jerry928
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Last updated: April 13, 2023
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First submittedApril 13, 2023
Times taken2,833
Average score60.0%
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problem
answer
92 - 90
2
38 - 11
27
79 - 59
20
99 - 84
15
11 - 5
6
problem
answer
71 - 33
38
44 - 4
40
35 - 13
22
86 - 61
25
99 - 69
30
problem
answer
88 - 75
13
13 - 4
9
60 - 42
18
84 - 24
60
100 - 57
43
problem
answer
92 - 8
84
75 - 34
41
24 - 13
11
89 - 15
74
63 - 5
58
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1 Comments
+1
Level 83
Apr 13, 2023
Still pretty easy in a minute. I reckon I can do it in 30 seconds... I'll be back...