Fast Math - Square Roots Quiz

In this quiz the answers change every time you play! Solve these randomised square root problems as fast as you can!
Answer must correspond to highlighted box!
All answers are integers
Too easy? Try the harder version: Up to 200 squared
Quiz by Stewart
Rate:
Last updated: November 3, 2019
First submittedNovember 3, 2019
Times taken3,638
Rating4.34
2:30
Enter solution here
0
 / 20 guessed
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+4
Level 57
Nov 10, 2019
I made a Fast Math - Roots Quiz in August, not that anyone cares.
+4
Level 66
Nov 10, 2019
But yours wasn't randomised, and is cube roots too. This is just square roots.
+1
Level 52
Nov 13, 2019
I am the damn champion. 100% first time with 8 seconds left.
+2
Level 62
Dec 28, 2019
1:24 left
+7
Level 56
Jan 6, 2020
did it in 43s on my first try. simple trick: estimate the first digit by ignoring the last two digits and taking the square root, then guess the last digit by looking at the last digit.
+2
Level 69
Apr 7, 2020
Can I call you '819' for short?....... anyway you are correct with your tip, I got 19/20 having a go your way........ i don't know why it works ...... but it does!
+1
Level 51
Apr 24, 2020
I had a similar trick, just guessed numbers using the first 3 digits and using the last digit to see if the root was odd.
+1
Level 82
Apr 10, 2020
Easy, Tyger
+1
Level 26
Dec 22, 2019
100% first try with 19 seconds left i could have done it faster but for somereason i got stuck on one
+3
Level 81
Apr 7, 2020
Now you'll remember that the square root of one is one.
+3
Level 76
Apr 6, 2020
There's a lot of time on the clock - got 100% with a minute left and a lot of guessing. It's easy to just go in order of lower to higher and guess very quickly.
+1
Level 66
Apr 7, 2020
The time is the same as other "fast math" quizzes. 2:30 with 20 questions! Remember if this is too easy you can always try the harder version in the description!
+1
Level 57
Apr 6, 2020
Funny!
+1
Level 21
Apr 16, 2020
1st try ma bois
+1
Level 45
May 18, 2020
0:33 .. phew