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0.05= ? 
How do i figure it out?
Test tomorrow!

Guest Sep 27, 2017
edited by Guest  Sep 27, 2017
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2+0 Answers

 #1
avatar+889 
0

If you happen to know, off the top of your head, that sqrt(5) is 2.236 (3dp) then you could write 0.05 = 5/100 which, on taking the sqr root would be 2.236/10 = 0.2236.

Bertie  Sep 27, 2017
 #2
avatar+79786 
+1

.05^2

 

Note    .05  =    5 / 100   =  1 / 20

 

So

 

.05^2  =  (5/100)^2  =  (1/20)^2   = (1/20) (1/20)   = 1  / 400

 

Also

 

.05

.05

___

.0025

 

These two answers are equivalent

 

 

cool cool cool

CPhill  Sep 27, 2017

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