Calculating Square root of decimal number manually.
2899
Calculating a SQRT digit-by-digit?
112975
How do I format a Decimal to a programatically controlled number of decimals in c#?
80320
When can I assume that all decimal digits returned by Mathematica are provably correct?
18911
Finding real roots of negative numbers (for example, $\sqrt[3]{-8}$)
7500
$\arctan$ of a square root as a rational multiple of $\pi$
21361
c++ practical computational complexity of  SQRT()
137695
How to calculate square root or cube root?
20548
General formula to obtain triangular-square numbers
149942
Convert a decimal number to a fraction / rational number
86603
Infinite square-rooting
113481
Modular Arithmetic - Find the Square Root
24743
How to extract the decimal part from a floating point number in C?
100492
Fastest Square Root Algorithm
103493
Find the $1000$th digit after the decimal point of $\sqrt{n},$ where $n=\underbrace{11\dots1}_{1998 \text{ 1's}}$
59000
How to round to at most 2 decimal places, if necessary?
56974
Determining the missing digits of $15! \equiv 1\square0767436\square000$ without actually calculating the factorial
1190
Square Root of Rational Number $\frac{A}{B}$