In this video I will teach you the trick on how to get the square root of 4 digit number in just 3 seconds! This trick can also be applied to 3 digit and 5 digit numbers. You don't have to use calculator after mastering this math trick! Enjoy watching and be math genius! For more math trick videos just click the links below: - Math Trick: Squaring 2 digit number ending in 5 - Math Trick: Multiplying numbers near 100 - Multiply 3 digit number by 99 - Multiply 1 and 2 digit number by 99 - Multiplying any number by 5 - Dividing large number by 5 - Math Trick: Squaring 2 digit number ending in 5 - Getting the square root of 4 digit numbers in 3 seconds! Enjoy!