Question

Hi how to calculate squares most effectively?

Answer 1

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Before going to learn the shortcut tricks to find out the squares of two digit number you must have to remember all the square from 1 to 10.

Make practices by following the below tricks, to find the square of two digit number in some seconds.

Shortcut Tricks to Find the Square of two-digit Number

Formula For this tricks:

Let ‘pq’ be a two number that we want to find the square.

〈pq〉²=?

Ans:

• Split the number into two parts

p↔q

• Now find the square of each digit

let (p)²=p²

& (q)²=q² (If the square of q is an one digit number then Write it as 0q²)

• Now find 20×p×q = 20pq (We have to multiply each digit p & q by 20, here 20 is fixed)

• So the square of the number (pq) will be p²0q²+20pq=z