Square Root Table for Calculator
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) |
|---|---|
| 1 | 1.000 |
| 2 | 1.414 |
| 3 | 1.732 |
| 4 | 2.000 |
| 5 | 2.236 |
| 6 | 2.449 |
| 7 | 2.646 |
| 8 | 2.828 |
| 9 | 3.000 |
| 10 | 3.162 |
| 11 | 3.317 |
| 12 | 3.464 |
| 13 | 3.606 |
| 14 | 3.742 |
| 15 | 3.873 |
| 16 | 4.000 |
| 17 | 4.123 |
| 18 | 4.243 |
| 19 | 4.359 |
| 20 | 4.472 |
| 21 | 4.583 |
| 22 | 4.690 |
| 23 | 4.796 |
| 24 | 4.899 |
| 25 | 5.000 |
| 26 | 5.099 |
| 27 | 5.196 |
| 28 | 5.292 |
| 29 | 5.385 |
| 30 | 5.477 |
| 31 | 5.568 |
| 32 | 5.657 |
| 33 | 5.745 |
| 34 | 5.831 |
| 35 | 5.916 |
| 36 | 6.000 |
| 37 | 6.083 |
| 38 | 6.164 |
| 39 | 6.245 |
| 40 | 6.325 |
| 41 | 6.403 |
| 42 | 6.481 |
| 43 | 6.557 |
| 44 | 6.633 |
| 45 | 6.708 |
| 46 | 6.782 |
| 47 | 6.856 |
| 48 | 6.928 |
| 49 | 7.000 |
| 50 | 7.071 |
| 51 | 7.141 |
| 52 | 7.211 |
| 53 | 7.280 |
| 54 | 7.348 |
| 55 | 7.416 |
| 56 | 7.483 |
| 57 | 7.549 |
| 58 | 7.616 |
| 59 | 7.682 |
| 60 | 7.746 |
| 61 | 7.810 |
| 62 | 7.874 |
| 63 | 7.937 |
| 64 | 8.000 |
| 65 | 8.062 |
| 66 | 8.124 |
| 67 | 8.185 |
| 68 | 8.246 |
| 69 | 8.307 |
| 70 | 8.367 |
| 71 | 8.426 |
| 72 | 8.485 |
| 73 | 8.544 |
| 74 | 8.602 |
| 75 | 8.660 |
| 76 | 8.718 |
| 77 | 8.775 |
| 78 | 8.831 |
| 79 | 8.887 |
| 80 | 8.944 |
| 81 | 9.000 |
| 82 | 9.055 |
| 83 | 9.110 |
| 84 | 9.165 |
| 85 | 9.219 |
| 86 | 9.274 |
| 87 | 9.327 |
| 88 | 9.381 |
| 89 | 9.433 |
| 90 | 9.487 |
| 91 | 9.540 |
| 92 | 9.593 |
| 93 | 9.646 |
| 94 | 9.699 |
| 95 | 9.751 |
| 96 | 9.803 |
| 97 | 9.855 |
| 98 | 9.907 |
| 99 | 9.958 |
| 100 | 10.000 |
Square Root Examples
Let's look at a few examples to understand how square roots work:
- Example 1: Find the square root of 16.
Solution: √16 = 4 because 4 × 4 = 16.
- Example 2: Find the square root of 25.
Solution: √25 = 5 because 5 × 5 = 25.
- Example 3: Find the square root of 36.
Solution: √36 = 6 because 6 × 6 = 36.
- Example 4: Find the square root of 49.
Solution: √49 = 7 because 7 × 7 = 49.
- 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).