The square numbers above and below 53 are \(49 = 7^2\) and \(64 = 8^2\). This means that the value of √53 is between 7 and 8, and closer to 7 because 53 is closer to 49 than it is to 64.

Roots are the opposite of powers. As 2 squared is 4, then a square root of 4 must be 2. \(2^2 = 4\). Reversing this gives \(\sqrt{4} = 2\). To find square roots or cube roots, work backwards from ...