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Square Root Table for Calculator

Reviewed by Calculator Editorial Team

The square root of a number is a value that, when multiplied by itself, gives the original number. This calculator provides an interactive square root table and formula explanation to help you understand and calculate square roots efficiently.

What is Square Root?

The square root of a number x is a number y such that y² = x. For example, the square root of 25 is 5 because 5 × 5 = 25. Square roots are important in mathematics, physics, engineering, and many other fields.

Square roots can be positive or negative. For example, both 5 and -5 are square roots of 25 because (5)² = 25 and (-5)² = 25. However, the principal (or positive) square root is typically used in most calculations.

How to Use Square Root Table

Using a square root table is straightforward. Simply find the number you want to find the square root of in the left column, and the corresponding square root will be in the right column. For example, if you look up 16, you'll find 4 as the square root.

Square root tables are particularly useful when dealing with perfect squares or when you need quick reference values. For non-perfect squares, you can use the calculator to find more precise values.

Square Root Formula

Square Root Formula

The square root of a number x can be represented as:

√x = y

where y × y = x

The square root formula is fundamental in mathematics and is used in various calculations involving areas, distances, and other measurements. Understanding this formula helps in solving more complex mathematical problems.

Square Root Table

Below is a table showing the square roots of numbers from 1 to 100. This table provides quick reference values for common square roots.

Number (x) Square Root (√x)
11.000
21.414
31.732
42.000
52.236
62.449
72.646
82.828
93.000
103.162
113.317
123.464
133.606
143.742
153.873
164.000
174.123
184.243
194.359
204.472
214.583
224.690
234.796
244.899
255.000
265.099
275.196
285.292
295.385
305.477
315.568
325.657
335.745
345.831
355.916
366.000
376.083
386.164
396.245
406.325
416.403
426.481
436.557
446.633
456.708
466.782
476.856
486.928
497.000
507.071
517.141
527.211
537.280
547.348
557.416
567.483
577.549
587.616
597.682
607.746
617.810
627.874
637.937
648.000
658.062
668.124
678.185
688.246
698.307
708.367
718.426
728.485
738.544
748.602
758.660
768.718
778.775
788.831
798.887
808.944
819.000
829.055
839.110
849.165
859.219
869.274
879.327
889.381
899.433
909.487
919.540
929.593
939.646
949.699
959.751
969.803
979.855
989.907
999.958
10010.000

Square Root Examples

Let's look at a few examples to understand how square roots work:

  1. Example 1: Find the square root of 16.

    Solution: √16 = 4 because 4 × 4 = 16.

  2. Example 2: Find the square root of 25.

    Solution: √25 = 5 because 5 × 5 = 25.

  3. Example 3: Find the square root of 36.

    Solution: √36 = 6 because 6 × 6 = 36.

  4. Example 4: Find the square root of 49.

    Solution: √49 = 7 because 7 × 7 = 49.

  5. Example 5: Find the square root of 64.

    Solution: √64 = 8 because 8 × 8 = 64.

These examples illustrate how to find the square root of a number by identifying a value that, when multiplied by itself, gives the original number.

Square Root Applications

Square roots have numerous applications in various fields:

  • Mathematics: Square roots are fundamental in algebra, geometry, and calculus.
  • Physics: Square roots are used in calculating distances, velocities, and other measurements.
  • Engineering: Square roots are essential in designing structures, calculating forces, and solving equations.
  • Finance: Square roots are used in risk assessment, portfolio management, and financial modeling.
  • Computer Science: Square roots are used in algorithms, data compression, and cryptography.

Understanding square roots is crucial for solving problems in these fields and many others.

Square Root FAQ

What is the square root of 0?

The square root of 0 is 0 because 0 × 0 = 0.

What is the square root of 1?

The square root of 1 is 1 because 1 × 1 = 1.

What is the square root of a negative number?

The square root of a negative number is not a real number. It is an imaginary number, represented as i√x, where x is a positive real number.

How do I calculate the square root of a number?

You can calculate the square root of a number using the square root formula, a calculator, or by using the square root table provided on this page.

What is the difference between square root and square?

The square of a number is the result of multiplying the number by itself (x × x). The square root of a number is a value that, when multiplied by itself, gives the original number (√x).