The list of square roots of all numbers from 1 to 20 is called Square Root 1 to 20. Both positive and negative values can be found in square roots. From 1 to 20, the positive values of square roots vary from 1 to 4.47214.

The numbers 1, 4, 9, and 16 are perfect squares in square roots 1 to 20, but the remaining numbers are non-perfect squares, meaning their square root will be illogical. In radical form, the square root of 1 to 20 is written as x, while in exponential form, it is written as (x)½.

**Square Roots 1 to 20:**

- In radical form: √x
- In exponential form: (x)
^{½} - Largest Square Root: √20 = 4.4721

Where x is any number between 1 to 20.

**Square Root from 1 to 20**

Learning the square roots of 1 to 20 can assist you in swiftly simplifying time-consuming lengthy equations. In the table below, the values of square roots 1 to 20 are presented to three decimal places.

Square Root from 1 to 20 Rounded to 3 Decimal Places | |

√1 = 1 | √2 = 1.414 |

√3 = 1.732 | √4 = 2 |

√5 = 2.236 | √6 = 2.449 |

√7 = 2.646 | √8 = 2.828 |

√9 = 3 | √10 = 3.162 |

√11 = 3.317 | √12 = 3.464 |

√13 = 3.606 | √14 = 3.742 |

√15 = 3.873 | √16 = 4 |

√17 = 4.123 | √18 = 4.243 |

√19 = 4.359 | √20 = 4.472 |

**Square Root 1 to 20 for Perfect Squares**

The table below shows the values of square roots from 1 to 20 for perfect squares.

√1 = 1 | √4 = 2 |

√9 = 3 | √16 = 4 |

**Square Root 1 to 20 for Non-Perfect Squares**

Below are the values of 1 to 20 square roots for non-perfect squares.

√2 = 1.414 | √3 = 1.732 |

√5 = 2.236 | √6 = 2.449 |

√7 = 2.646 | √8 = 2.828 |

√10 = 3.162 | √11 = 3.317 |

√12 = 3.464 | √13 = 3.606 |

√14 = 3.742 | √15 = 3.873 |

√17 = 4.123 | √18 = 4.243 |

√19 = 4.359 | √20 = 4.472 |

**How to Calculate Square Root from 1 to 20?**

**Method 1: Prime Factorization**

Example: Value of √4

- Prime factorization of 4 is 2 × 2
- Pairing prime factors: 2

Therefore, the value of √4 = 2