
The square of a number denotes the value when a number is multiplied by itself. Square root means to find the root number, which makes the given number a perfect square. It is denoted by the symbol √ known as radical or radix. For example, the square root of 10 is irrational, with never-ending digits after the decimal. A square root will always have a positive and a negative value.
Square root of 10 is ±3.16227…
We need to check the unit place of a number to find the perfect square.
Since 10 is not a perfect square, as it ends with number 0, we need to find the square root of 10 using different methods – long division and finding square root using unit places.
| √1 | 1 | √11 | 3.3166 |
| √2 | 1.4142 | √12 | 3.4641 |
| √3 | 1.7321 | √13 | 3.6056 |
| √4 | 2 | √14 | 3.7417 |
| √5 | 2.2361 | √15 | 3.8730 |
| √6 | 2.4495 | √16 | 4 |
| √7 | 2.6458 | √17 | 4.1231 |
| √8 | 2.8284 | √18 | 4.2426 |
| √9 | 3 | √19 | 4.3589 |
| √10 | 3.1623 | √20 | 4.4721 |
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