SHORT TRICK TO CALCULATE THE SQUARE OF ANY TWO DIGITS NUMBER THAT ENDS WITH 5.

As you probably know, the square of a number is a number multiplied by itself. For example, the square of 9 is 9 x 9 = 81.

This post is made to enable you to easily calculate the square of any two-digit or three-digit (or higher) number.

That method is especially simple when the number ends in 5, so let’s do that trick now.

To square a two-digit number that ends in 5, you need to remember only two things.

1. The answer begins by multiplying the first digit by the next higher digit.

2. The answer ends in 25.

For example, to square the number 35, we simply multiply the first digit (3) by the next higher digit (4), then attach 25.

Since 3 x 4 = 12, the answer is 1225.

Therefore, 35x35 = 1225.

Our steps can be illustrated this way:

How about the square of 85?

Since 8 x 9 = 72,

we immediately get 85 x 85 = 7225.

Similarly we can calculate the following squares

15 x 15 = 225
25 x 25 = 625
35 x 35 = 1225
45 x 45 = 2025
55 x 55 = 3025
65 x 65 = 4225
75 x 75 = 5625
85 x 85 = 7225
95 x 95 = 9025

Same method could be applicable for two or higher digits numbers

For example: 115 x 115 = ?

Since 11 x 12 = 132

So the answer would be = 13225

Therefore 115 x 115 = 13225.

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