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Fast Math - Square that Number! in 30 Seconds

In just 30 seconds, answer these randomly-generated squaring problems in your head.
The quiz changes every time you play!
Quiz by Stewart
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Last updated: November 27, 2019
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First submittedNovember 21, 2018
Times taken1,535
Average score45.0%
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Problem
Solution
40 x 40
1600
13 x 13
169
10 x 10
100
23 x 23
529
50 x 50
2500
16 x 16
256
5 x 5
25
6 x 6
36
17 x 17
289
19 x 19
361
1 x 1
1
18 x 18
324
15 x 15
225
3 x 3
9
25 x 25
625
22 x 22
484
12 x 12
144
4 x 4
16
28 x 28
784
24 x 24
576
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