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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 taken1,711
Average score50.0%
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Problem
Solution
20 x 20
400
3 x 3
9
5 x 5
25
45 x 45
2025
30 x 30
900
Problem
Solution
9 x 9
81
4 x 4
16
29 x 29
841
28 x 28
784
1 x 1
1
Problem
Solution
27 x 27
729
26 x 26
676
12 x 12
144
19 x 19
361
10 x 10
100
Problem
Solution
35 x 35
1225
14 x 14
196
11 x 11
121
24 x 24
576
40 x 40
1600
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