Given below is a method to calculate 372?Find an easy method to compute squares of number ending in 5.

Question

Philoid · Accepted Answer

Method to find the square of number ending with 5.

Suppose we have to find 45².

Let the number at tens place be x.

So, we first have to find x(x+1).

For example, here we have x=4.

So, x(x+1) = 4(4+1) = 4×5 = 20

Now, we just need to write this 20 before 25, i.e. 2025 and it is the required square.

Let us now find the square of 85.

So, 8(8+1) = 8×9 = 72

∴ 85² = 7225

Given below is a method to calculate 37²?

Find an easy method to compute squares of number ending in 5.